2014 MERCEDES BENZ CLA250 Engine Problems

I own a 2014 Mercedes-Benz CLA 250 with the 2.0L turbocharged 4-cylinder M270 engine. The check-engine light came on and an OBD-II scan showed fault code P052E / P052E71, which indicates that the valve for crankcase ventilation (PCV / crankcase ventilation valve integrated into the valve cover) has a malfunction and the actuator is blocked. The vehicle is available for inspection and, if the repair is performed, the failed part can be retained. This appears to be the same failure that has been documented by other owners and by Mercedes-Benz on the related M274 engine used in other models (same 2.0L turbo engine family and PCV / crankcase ventilation design, but in a longitudinal layout). For those vehicles, Mercedes has issued technical service bulletins and extended emissions-related warranty coverage for the crankcase ventilation / PCV system, but vehicles like my CLA with the M270 engine are excluded even though they show the same DTCs and failure. In my case, the problem has so far shown up as a check-engine light and stored fault codes, without obvious drivability symptoms yet. However, a blocked or failed crankcase ventilation valve can increase crankcase pressure, cause oil leaks, fuel vapor or oil smells, and potential turbocharger or drivability issues, which may create a safety risk if the problem worsens (loss of power or stalling). The problem has been reproduced multiple times with different OBD-II scan tools. I contacted Mercedes-Benz and was told there are no recalls or warranty coverage for this issue on my vehicle.

P052e common crankcase ventilator issue mercedez extended warranty for later models for this same consistent issue in all the cars excluding 2014 starting at 2015 vehicles making us pay over $2000 for a fix supposed to be free being that it's all mercedes even the year before Should be a recall along with the hundreds of thousands of people with same issue online same car.

Check engine code p052e - PCV valve replacement (Crankcase Ventilation valve) - common issue on car and known recall for other models

The contact owns a 2014 Mercedes-Benz CLA250. The contact stated while driving at approximately 70 MPH, the vehicle stalled. The contact stated that when the vehicle stalled, an audible chime sounded, and the air bag warning light illuminated, and a RED triangle symbol flashed on the instrument panel. The contact stated that the instrument cluster went blank, and the vehicle lost power steering assist. Additionally, the brake pedal was very difficult to depress. The contact was able to restart the vehicle after several attempts, and the vehicle returned to normal functionality. The contact stated that the failure reoccurred. The contact drove the vehicle to a dealer who diagnosed the vehicle and determined that the battery needed to be replaced. The vehicle was repaired. The contact stated that the failure reoccurred and the vehicle had not taken back to the dealer. The manufacturer was not informed of the failure. The failure mileage was 76,850.

Mileage: 76,850

Apparently the TPS (Throttle Position Sensor) which is built into the gas pedal on this 2014 MB CLA250 only lasts so long before it becomes defective under highway conditions and causes the vehicle to go into LIMP MODE. When full acceleration is necessary, the unit will work for perhaps a few months or less, and then continue to fail worse and more frequently with each attempt at full acceleration. At highway speeds, this is an essential feature in a 4-cylinder vehicle such as this one and without the necessary acceleration capability, can expose the driver to serious risk of collision with other on-coming vehicles traveling at highway speeds. This "Limp Mode" features is extremely dangerous and hazardous to not only the driver of their vehicle, but to other drivers around them since they are left in a devastating position of being unable to accelerate normally and as necessary and as one would expect in any vehicle, let alone a Mercedes Benz. Never before have I driven a car that falls out of full acceleration mode only to subject the driver to serious collision circumstances. Whoever the imbecile is at MB engineering who incorporated this Limp Mode Feature should be fired!!! To make matters worse, this cheaply built TPS, which is the cause of the problem in my vehicle specifically, was only warrantied twice by the dealer and now they will not replace it under warranty which is a two-year period. I've only had the part 5 months before it failed again due to poor manufacturing and I had to pay all over again for a new one despite my warranty validity. There have been many other MB owners who have the same complaint for Limp Mode, which tells me that it's definitely not me, but rather the poorly built or engineered vehicle, as a matter of fact. MB has denied having these complaints to me, which of course, is a lie. That's misleading and deceptive business practices in my State and MB needs to live up to its warranty provisions and respect its customers.

Common issue with this make and model and many others Check engine code P052E

My engine light is and as per mechanics I have seen it is a very common problem with mercedes benz around crankcase ventilation actuator. As per mechanics its faulty part and mercedes have changed it for new models but there is no recall on the older models. Cost to repair the part is around $3500. Issue with the part if causing environment problem as mileages is reduced and more fuel burning. This eventually impacts the engine and car.

As I was driving, the car is on D but it slips into N and I cannot shift to any other gear accept P. This happens randomly and happened three times. I noticed the GLA250 also had this issue. I have to turn off my engine and restart my car to get it running again normally.

catalytic converter Got clogged up and car would loose power and not get enough air into engine and catalytic converter right next to the turbo under the heat shield would turn glowing red causing turbo to leak it’s fluids

Without warning , the vehicle started to shake uncontrollably and was unable to reach a certain speed without the tremors. Very unsafe to drive

RIGHT AIR BAG MALFUNCTION ERROR AND CHECK ENGINE LIGHT FOR CRANK CASE. THIS IS A VERY COMMON PROBLEM THAT MERCEDES EXPLAINED TO ME AND ALSO TOLD ME TO CHECK BACK FOR RECALLS BECAUSE THEIR VNI SYSTEM WILL PROBABLY SHOW ONE

Mileage: 65,000

WHILE DRIVING OUT OF A DRIVEWAY, A CAR PULLED NEAR MY CAR. AT THAT TIME, THE CAR WAS STATIONARY. MY WIFE HEARD THE PRE-COLLISION WARNING. THE THE CAR COMPLETELY SHUTOFF OR STALLED. TURNED OFF THE CAR COMPLETELY BY TURNING THE KEY. THEN TURNED THE CAR BACK ON. LUCKY THERE WAS NO ACCIDENT.

Mileage: 59,000

WHEN THE VEHICLE IS STOPPED I CAN HEAR A KNOCKING NOISE COMING AROUND THE WATER PUMP THE CAR HAS ONLY 39,000 MILES

I HAD A CHECK ENGINE LIGHT COME ON FOR A CRANKCASE VENT VALVE DEFECT ISSUE, THE PART IS $750 AND COSTS $1,950 WITH INSTALL. UPON IDENTIFYING THE ISSUE, I SPOKE TO THE PARTS DEPARTMENT AT MERCEDES AND THEY SAID THAT THEY HAVE BEEN REPLACING SO MANY OF THESE PARTS THAT IT SHOULD BE A RECALL ON THE C CLASS AND CLA CLASS. MOST ARE REPAIRED UNDER WARRANTY SO IT HAS NOT RECEIVED A LOT OF FOCUS. MERCEDES IS CHARGING EXORBITANT RATES TO FIX AN ERROR THAT THEY KNOWINGLY IGNORE TO BE A SIGNIFICANT ISSUE.

Mileage: 40,000

WONT PASS EMMISIONS FOR CRANK SHAFT BREATHER THAT PREVENTS FROM PASSING STATE INSPECTION EMMISIONS FAULT CODE P-052E71

Mileage: 61,000

ON THIS DAY, I WAS NEARLY KILLED IN MY 2014 MERCEDES CLA250 4MATIC THAT STALLED ON A HIGHWAY IN NEW YORK CITY. THE CAR HAS ROUGHLY 40,300 MILES ON THE ODOMETER. I WAS DRIVING ON THE BROOKLYN QUEENS EXPRESSWAY AT 4:00AM. THE CAR'S MOTOR STALLED AND THE CAR CAME TO A STOP IN THE LEFT LANE. THERE WERE NO SHOULDERS. I ATTEMPTED TO GET THE CAR RESTARTED BUT ALL I GOT WERE FLASHING DASHBOARD LIGHTS. I ATTEMPTED TO PUT UP A WARNING TRIANGLE TO THE REAR OF THE CAR, BUT THE TRAFFIC WAS MOVING TOO QUICKLY FOR ME TO SAFELY DO THAT. I SAT IN MY CAR AND BUCKLED MY SEAT BELT. I CALLED 911 TO ANNOUNCE MY EMERGENCY AND I CONTACTED MY CAR'S INSURER FOR A TOW TRUCK (THEY PROVIDE SUCH A SERVICE). WITHIN MOMENTS, A TOYOTA WITH TLC PLATES SMASHED INTO MY CAR SENDING ME INTO THE BARRIER. THE REAR OF THE CAR WAS BROKEN AND DEFORMED. THE FRONT OF THE CAR IS OKAY, BUT THE APPEARANCE OF THE REAR IS SUCH THAT I BELIEVE I LOST MY CAR. I READ ONLINE THAT THIS MODEL HAS A STALLING PROBLEM AND THAT OTHERS HAVE GONE THROUGH THIS. I WAS ONE OF THE UNLUCKY OWNERS AND I WILL BE SUING. THIS CAR'S AIRBAGS DID NOT DEPLOY AND I AM INJURED AND BEING TREATED IN A HOSPITAL.

Mileage: 40,300

TL* THE CONTACT OWNS A 2014 MERCEDES BENZ CLA250. THE CONTACT STATED THAT WHILE AT A STOP LIGHT, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS RESTARTED AND WAS DRIVEN TO THE RESIDENCE. THE CONTACT STATED THE VEHICLE WAS LATER TAKEN TO MERCEDES-BENZ OF ENCINO DEALER, (16721 VENTURA BLVD, ENCINO, CA 91436) WHERE IT WAS DIAGNOSED, AND THE CONDUCTOR COIL WAS REPLACED HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS TAKEN BACK TO THE SAME DEALER HOWEVER, TECHNICIAN COULD NOT FIND A FAILURE. THE CONTACT WAS INFORMED BY THE TECHNICIAN TO DRIVE THE VEHICLE WITH THE ECHO OFF. THE VEHICLE WAS DRIVEN WITH THE ECHO ON AND THE FAILURE RECURRED. THE CONTACT CALL THE SAME DEALER AND SCHEDULE AN APPOINTMENT. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE BUT DID NOT ASSIST. THE APPROXIMATE FAILURE MILEAGE WAS APPROXIMATELY 60,000.

Mileage: 60,000

WHILE DRIVING THE CAR SHUTS OFF WITHOUT WARNING. AFTER THE ENGINE SHUTS DOWN, IT WILL START AFTER WAITING FOR ABOUT 1 MINUTE.

Mileage: 65,569

TL* THE CONTACT OWNS A 2014 MERCEDES BENZ CLA250. THE CONTACT STATED WHILE DRIVING 25 MPH, THE VEHICLE SHUT OFF. THE CONTACT STATED THE AUXILIARY BATTERY LIGHT ILLUMINATED BEFORE THE VEHICLE SHUT OFF. THE CONTACT STATED THE VEHICLE WAS TOWED TO THE DEALER (MERCEDES-BENZ OF ALEXANDRIA: 200 S PICKETT ST, ALEXANDRIA, VA 22304) AND REPAIRED THE CONDUCTOR PLATE WHICH CAUSED THE VEHICLE TO STALL AND SHUT OFF. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 14,000.

Mileage: 14,000

THE COOLANT PUMP FAILS AFTER ABOUT ONLY 48000 MILES, WHICH CAUSES THE ENGINE OVERHEATED. I DID MY RESEARCH ONLINE AND FOUND THAT MANY OTHERS WHO OWN A MERCEDES CLA 250 HAD THE SAME COOLANT PUMP PROBLEM AT LOW MILEAGES (LESS THAN 50000 MILES). THUS, I DOUBT THAT THIS COOLANT PUMP FAILURE IS A DEFECT THAT NEEDS TO BE RECALLED FOR. MY CAR IS STILL WITH THE DEALERSHIP SO I DO NOT HAVE A REPORT/RECEIPT FROM THEM STATING THE PROBLEM YET.

Mileage: 48,000

I WAS DRIVING MY CAR WHEN ALL OF A SUDDEN THE CAR SLOWED DOWN AND THE STEERING BECAME STIFF. THE PRE SAFE LIGHT CAME ON THE SCREEN ALONG WITH "PARKING BRAKE" "TRACTION CONTROL" ALTHOUGH THE PARKING BRAKE WAS NOT APPLIED. I HAD TO HAVE MY CAR TOWED HOME BECAUSE IT WAS UNSAFE TO DRIVE.

Mileage: 79,000

DRIVING ON HIGHWAY IN LEFT LANE DOING AROUND 60MPH AND CAR GOES INTO LIMP MODE TAKING AWAY ALL THROTTLE CONTROL. I WAS FORCED TO COAST ACROSS LANES NARROWLY AVOIDING A COLLISION AND MANAGED TO PULL INTO A BUS STOP. I LEARNED THAT LIMP MODE IS TO PROTECT THE CAR FROM FURTHER DAMAGE BUT THE SAFETY OF THE DRIVER SHOULD COME FIRST. THERE SHOULD AT LEAST BE SOME KIND OF ADVANCED WARNING TO PULL VEHICLE OVER BEFORE IT SHUTS DOWN. THIS IS COMPLETELY UNACCEPTABLE AND ENDANGERS THE LIFE OF THE DRIVER AND OTHER DRIVERS ON THE ROAD.

Mileage: 22,000

AFTER HAVING 40K SERVICE ABOUT 6 WEEKS AGO ON MY 2014 CLA250, 'SERVICE REQUIRED: DO NOT SHIFT GEARS, VISIT DEALER' LIGHT CAME ON FROM A PARKED POSITION. THANK GOODNESS I WAS PARKED! I'VE READ SEVERAL POSTS WHERE THIS HAPPENED WHILE DRIVING AT HIGH SPEEDS! THIS IS A VERY DANGEROUS OCCUPANCY... A CRITICAL FAILURE! ANYWAY, THE ERROR MESSAGE CAME ON WHEN I STARTED THE CAR AND THE CAR IMMEDIATELY SHUT DOWN. IT HAD TO BE TOWED ON A FLATBED AS THERE WAS NO WAY TO EVEN START THE CAR AND IS AT THE SHOP NOW. MY CAR HAS LESS THAN 42K MILES. THIS REALLY IS UNACCEPTABLE AND I AM SCARED TO DRIVE THE CAR NOW AFTER READING IT HAPPENS WHILE DRIVING TOO! I HAVEN'T READ ANYWHERE WHAT THE ACTUAL ISSUE IS, ONLY THAT AFTER SONE PEOPLE GET IT BACK AFTER A SOFTWARE UPDATE IT HAPPENS AGAIN. MB REALLY NEEDS TO FIND OUT WHAT IS CAUSING THIS CRITICAL ERROR AND FIX IT SINCE IT IS SO DANGEROUS!

Mileage: 42,000

PURCHASED MY NEW CLA250 IN SEPTEMBER 2014. IN AUGUST OF 2015 MY CAR SUDDENLY STOPPED ACCELERATING WHILE DRIVING 65MPH ON THE NJ GARDEN STATE PARKWAY!. THE PRE-SAFE WARNING WAS PRESENT ON MY DASHBOARD. LUCKILY I WAS ABLE TO PULL TO THE SHOULDER WITHOUT CAUSING AN ACCIDENT. THIS COULD HAVE CAUSED A MAJOR CATASTROPHE KILLING ME AND OTHERS. I RESTARTED THE ENGINE AND DROVE TO MY DESTINATION MAKING SURE I STAYED IN THE RIGHT LANE ON THE PARKWAY. IT FAILED 2 MORE TIMES WHILE NOT ON THE HIGHWAY BUT STILL A VERY DANGEROUS SITUATION. TOOK THE CAR (WHICH HAD 16,000 MILES) TO A MERCEDES DEALERSHIP WHEN I RETURNED AND THEY PERFORMED A SERIES OF TESTS. THEY FOUND A PRODUCT TECHNICAL SUPPORT SYSTEM UPDATE WHICH INVOLVED UPDATING THE SOFTWARE. THE FAILURE DID NOT OCCUR AGAIN UNTIL NOV. 2017. I ALMOST GOT HIT BY A BUS IN PHILADELPHIA WHEN MY CAR DECIDED TO STOP ACCELERATING. FINALLY, DRIVING TO THE AIRPORT DOING 70MPH THE CAR AGAIN DISPLAYED THE PRE-SAFE WARNING AND RAPIDLY SLOWED DOWN ALMOST CAUSING A CRASH ON I-78 IN NJ. TOOK THE CAR TO A MERCEDES DEALERSHIP NEAR ME AND THEY SAID SINCE THE CAR IS 2,000 MILES BEYOND THE 50,000 MILE WARRANTY IT'S NOT COVERED. THEY ARE REPLACING A SERIES OF PARTS THAT WILL COST ME OVER $4,000 TO REPAIR! THERE IS NO GUARANTEE THIS WILL EVEN FIX THE PROBLEM. IS MERCEDES WAITING FOR SOMEONE TO DIE BEFORE THEY ACKNOWLEDGE THIS CAR HAS A VERY SERIOUS PROBLEM? I HAVE TO WONDER IF THERE HAS BEEN ANY CRASHES INVOLVING THIS CAR AND NOBODY SURVIVED TO DETAIL WHAT WAS HAPPENING! THE 2014 CLA IS NOT SAFE AND MERCEDES DOESN'T APPEAR TO BE CONCERNED.

Mileage: 16,000

I WAS GETTING OFF WORK AND I WAS ABOUT TO GET OUT OF THE GARAGE AND I DROVE FOR ABOUT 100 YARDS AND I GET THE CHECK ENGINE LIGHT ON, POWER TERAIN LIGHT ON SAYING DISABLED AND ON THE DASHBOARD IT SAID INOPERATIVE SEE OPERATORS MANUAL AND ALSO PRE_SAFE FUNCTIONS LIMITED. IT WAS GOING BACK AND FORTH BETWEEN THESE TWO. WHEN I WAS DRIVING GOING ABOUT 5MPH, THE CAR WOULD SPEED UP BY ITSELF WITHOUT ME TOUCHING THE GAS PEDAL, THEN IT WOULD SLOW DOWN AND SPEED UP AGAIN. IT WAS LIKE I WAS LEARNING TO DRIVING STICK SHIFT, STOP AND GO, EXCEPT THE CAR WAS DOING IT BY ITSELF. THEN I PARKED THE CAR, AND THE ARROW IN TACHOMETER WAS GOING UP AND DOWN. IT WOULD GO TO 1.5 AND THEN DROP TO .5 EVERY SECOND OR SO. THEN I STEPPED ON THE GAS AND FLOORED IT WHILE I HAD IT ON PARK AND IT DID NOTHING. I SHUT IT OFF AND STARTED IT AGAIN TO SEE MAYBE IT WOULD GET FIXED BUT IT DIDN'T. I LEFT THE CAR THERE OVERNIGHT AND THE NEXT MORNING WHEN THE TOW TRUCK CAME I STARTED IT, AND ONLY THE CHECK ENGINE LIGHT REMAINED ON, EVERYTHING ELSE WAS GONE. I DROVE IT FOR ABOUT 500 YARD TO GET IT OUT OF THE GARAGE TO MAKE IT EASIER TO TOW. I HAVE HEARD MANY OTHER PEOPLE HAD SOME ISSUES WITH 2014 CLA 250

Mileage: 1

WATER PUMP FAILED, 21,000 MILES

Mileage: 21,000

VEHICLE BECAME INOPERATIVE WHILE DRIVING ON A HIGHWAY. HAPPENED TWICE TODAY ON SPEEDS OF 60+ MPH IN HEAVY TRAFFIC. VEHICLE DECELERATED QUICKLY AND LOST SPEED, I WAS LUCKY TO AVOID COLLISIONS. THE CONSOLE POPPED UP FLASHING MESSAGE 'PRE-SAFE FUNCTIONS LIMITED' ON THE CONSOLE. THE VEHICLE DID NOT RESPOND TO ACCELERATOR. AFTER SWITCHING THE IGNITION OFF AND ON AGAIN, THE PROBLEM TEMPORARY DISAPPEARED, BUT THEN HAPPENED AGAIN. THE VEHICLE IS DULY SERVICED AND IS STILL ON WARRANTY, THERE WAS NO ACCIDENTS OR MECHANICAL FAULTS PRIOR TO DATE. SCARY AND VERY DANGEROUS. COULD HAVE EASILY INJURED MYSELF OR SOMEONE ELSE WHO WOULD HAVE HIT THE VEHICLE WHICH SUDDENLY BECOMES INOPERATIVE.

Mileage: 21,700

MY CAR WAS PURCHASED 8/2014 FROM MERCEDES BENZ OF HENDERSON NV. THIS CAR HAS HAD PROBLEMS THE1ST DAY OF OWNING IT. THIS CAR HAS BEEN IN AND OUT OF THE SHOP SO MANY TIMES THAT I HAVE LOST COUNT. I HAVE A FOLDER AS THICK AS MY BIBLE. MERCEDES WON'T CLAIM IT AS A LEMON AND THIS CAR HAS BEEN IN THE SHOP FOR THE SAME PROBLEMS WITH ADDITIONAL PROBLEMS EVERY TIME IT IS TAKEN IN. THE DEALERSHIP WILL NOT EXCHANGE IT FOR A EQUAL CAR WITHOUT THE OPTION OF RENEWING ANOTHER LEASE AND INCREASING THE PAYMENT. I HAVE EXPERIENCED HAZARD LIGHTS ON THE FIRST 30MILES. THE ELECTRICAL WENT OUT/WARNING FLASHERS/MALFUNCTIONING/INOPERABLE THE CAR HAS DIED DRIVING WHICH PUT MINE AND OTHERS LIVES IN DANGER. ALL I'M TOLD IS I AM SORRY. I AM DRAINED WITH DEALING WITH THE DEALERSHIP AND GOING THROUGH ALL OF THEIR TURNOVERS WITH MNGMNT. PABLO RODRIGUEZ WAS A GEM ALONG WITH BUTCH WHO DID NOTHING!!EVERY CODE THAT WAS DCMNTD WAS DELETED FROM THE MEMORY. MY CAR WAS RECENTLY IN AGAIN WITH INOPERABLE/MALFUNCTIONING DISPLAY/ACCELERATION/PRE SAFE SYSTEM ERROR IN WHICH THEY SAID THEY FIXED BUT LESS THE 24HRS THE SAME PROBLEM OCCURRED. THE DEALERSHIP HAD MY CAR FROM JUNE 24TH TO JULY 10TH AND SAME ISSUES BUT NEW ERROR MESSAGES. I HAVE BEEN WITHOUT A CAR SINCE I PICKED IT UP AND THE DEALERSHIP WILL NOT DO ANYTHING ABOUT GETTING IT IN SOONER THEN THE 25TH. THEY DON'T CARE AT THIS DEALERSHIP NOR DOES MERCEDES CORP. HRS & HRS OF WASTED TIME TALKING TO PEOPLE WHO CAN DO NOTHING.NO CALLS FROM ANYONE, I RECEIVED SURVEYS IN THE BEGINNING THAT WERE NEVER ADDRESSED I KNOW THAT BECAUSE OF MY FEEDBACK. IVE NEVER EXPERIENCED ANYTHING LIKE THIS BEFORE AND IT IS SO DISAPPOINTING. OVERALL IT HAS A BEEN THE VERY WORST EXPERIENCE THAT IVE EVER HAD OWNING A CAR!!! OR MERCEDES THAT IS.

TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ CLA250. WHILE DRIVING 50 MPH, THE CHECK ENGINE AND RPM WARNING LIGHTS ILLUMINATED. IN ADDITION, THE ENGINE MADE A LOUD UNKNOWN NOISE AND THE VEHICLE BEGAN TO LOSE SPEED. THE FAILURE RECURRED THREE TIMES. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE FUEL PEDAL WAS REPLACED; HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 1,000.

Mileage: 1,000

ON MULTIPLE OCCASIONS, THE VEHICLE WILL SHUT OFF WHILE DRIVING. THE MESSAGE STATES "PRE-SAFE FUNCTIONS LIMITED". WHEN THE CAR SHUTS OFF FOR NO APPARENT REASON, I HAVE TO COAST TO THE SIDE OF THE ROAD TO SAFETY. I HAVE TURN THE VEHICLE OFF AND THEN I WILL BE ABLE TO RESTART THE ENGINE. I'VE ALREADY TAKEN THIS INTO MY MERCEDES DEALERSHIP AND THEY DID NOT FIX THE ISSUE. I'M AFRAID THIS IS GOING TO CAUSE A FATAL ACCIDENT AND I HAVE TWO SMALL CHILDREN. PLEASE MAKE THIS A HIGH PRIORITY

Mileage: 20,500

BOUGHT BRAND NEW CLA250 A YEAR AGO AND DRIVING LAST WEEK ON THE HIGH WAY AND "INOPERATIVE MODE" WENT ON AND YOU LOSE ALL ACCELERATION POWER. AFTER I PULLED OVER FINALLY RESTARTING THE CAR A FEW TIMES I REGAINED ACCELERATION. CURRENTLY AT DEALER BEING ASSESSED

Mileage: 21,000

BOUGHT THE CLA 250 BRAND NEW IN 2014, VEHICLE HAS NOW TWICE GONE IN TO PRE-SAFE MODE AND INOPERATIVE MODE WHILE DRIVING. THE CAR SWITCHES TO NEUTRAL AS I AM DRIVING AND THEN REFUSES TO SHIFT IN TO DRIVE OR REVERSE LEAVING ME STRANDED IN THE STREETS ON TWO OCCASION WHICH COULD HAVE CAUSED TWO VERY SERIOUS ACCIDENTS. THE CAR ON THE SECOND TIME HAD TO BE TOWED TO DEALERSHIP WHO COULD'NT FIND ANYTHING WRONG WITH THE CAR. THERE SOLUTION WAS MORE OF A GUESS ABOUT A CPU NEEDING TO BE REPLACED.

Mileage: 17,796

CAR HAS NOW TWICE GONE INTO PRE-SAFE FUNCTIONS LIMITED AND INOPERATIVE MODE (SIMULTANEOUSLY) WHILE DRIVING WITH NO NOTICE, EFFECTIVELY REMOVING ALL ABILITY TO ACCELERATE AND CREATING NEAR MAJOR ACCIDENTS BOTH TIMES. THE FIRST TIME OCCURRED ON THE FREEWAY DRIVING IN THE SECOND TO THE LEFT LANE AT APPROX 75 MPH. CARS NARROWLY AVOIDED CRASHING INTO ME WHILE I COASTED THROUGH HIGH SPEED TRAFFIC TO THE SHOULDER. THE SECOND TIME WAS IN TOWN AND WITHOUT WARNING SAME THING OCCURRED LEAVING ME COASTING IN THE LEFT LANE WITH A TRUCK NARROWLY AVOIDING A COLLISION AND THE TRUCK HAVING TO GO INTO ONCOMING TRAFFIC AND BACK TO AVOID ME. AS THERE WAS NO SHOULDER I HAD TO NAVIGATE AND COME TO A STOP IN THE RIGHT LANE OF TRAFFIC.

Mileage: 23,000

TL* THE CONTACT OWNS A 2014 MERCEDES BENZ CLA250. WHILE DRIVING AT APPROXIMATELY 65 MPH, THE VEHICLE STALLED AND THE ENGINE WARNING LIGHT ILLUMINATED. THE CONTACT WAS ABLE TO RESTART THE VEHICLE ON THE FIRST ATTEMPT. THE FAILURE RECURRED INTERMITTENTLY. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 25,000.

Mileage: 25,000

I WAS DRIVING ON I-85 AT 70 MILES PER HOUR. THE CAR STOP ACCELERATING AND ON THE DASH BOARD A MESSAGE OF INOPERATIVE, SEE MANUAL. I WAS ALMOST HIT BY MANY CARS. I COASTED TO THE SIDE OF THE INTERSTATE. I ALMOST FREAKED OUT. I CALLED THE MERCEDES DEALER AND I WAS TOLD TO CUT THE CAR OFF AND TURN IT BACK ON. THAT DIDN'T WORK. I HAD THE CAR TOWED TO THE DEALER. THE DEALER TOLD ME THEY DID SOME UPDATES AND FIXED THE CAR. THE CAR DID THE SAME THING 2 OTHER TIMES. I COULD HAVE BEEN KILLED IN THE TRAFFIC. THIS TIME I TOOK THAT DEATH TRAP BACK TO THE MERCEDES DEALER AND LEFT IT AND INFORMED THE DEALERSHIP TO GIVE ME ANOTHER CAR OR GIVE ME MY CASH MONEY BACK THAT I PAID FOR THE CAR. I AM NOT TAKING THE CAR BACK. I AM AFRAID I WILL BE KILLED IN THE CAR. THIS IS THE MOST SCARY EXPERIENCE. THE DEALERSHIP TOLD ME THAT THERE IS KNOW FIX FOR THIS PROBLEM THE CAR NEEDS TO BE GROUNDED BEFORE SOMEONE GET KILLED.

Mileage: 300

INOPERATIVE - PRE-SAFE FUNCTIONS LIMITED - I'VE HAD THIS ERROR COME UP 3X SO FAR, IT HAPPENED 2X JUST LAST NIGHT ON A 10 MINUTE DRIVE. FIRST TIME WAS ON THE FREEWAY, HAD TO PULL OVER TO THE SHOULDER AND RESTARTED THE CAR. THE 2X OTHER TIMES HAPPENED LAST NIGHT, DRIVING 10MINS IN THE EVENING, BOTH HAD TO PULL OVER AND RESTART. THE SECOND TIME, MY CHECK ENGINE LIGHT CAME UP. I HOPE THIS IS ADDRESSED QUICKLY AS I CAN SEE THAT THE COMPLAINTS ARE PILING UP ON HERE. *TR

Mileage: 14,540

RECENTLY, EVERY TIME I MA DRIVING IN THE RAIN, NO MATTER HOW LIGHT THE RAIN IS, THE TRACTION CONTROL LIGHT COMES ON AND A MESSAGE STATING"PRE SAFE, FUNCTIONS LIMITED, INOPERATIVE" SHOWS UP. THE VEHICLE HAS LOOSES ACCELERATION. THIS HAPPENED TO ME ON THE FREEWAY TODAY. THIS IS POTENTIALLY DANGEROUS AS IT COULD CAUSE A SERIOUS ACCIDENT. THIS SEEMS TO BE A RECURRENT PROBLEM BASED ON A SIMPLE ONLINE SEARCH. *TR

Mileage: 13,800

ACCELERATING FROM AN INTERSECTION AFTER THE LIGHT TURNED GREEN, THE ENGINE BEGAN CHUGGING AND THUMPING. THE CHECK ENGINE LIGHT CAME ON IMMEDIATELY AND THE ECO LIGHT STARTED FLASHING . THE ENGINE STALLED SEVERAL TIMES. WE DROVE STRAIGHT TO THE DEALERSHIP WITH THE CAR. AT EVERY INTERSECTION WITH A RED LIGHT, IT SEEMED AS THOUGH THE CAR WOULD STALL AGAIN. WE DID MAKE IT TO THE DEALERSHIP. THEY KEPT IT FOR THREE DAYS, AND DETERMINED THAT IT WAS A DEFECTIVE MANIFOLD PRESSURE SENSOR. THIS IS THE SECOND TIME THE MANIFOLD PRESSURE SENSOR HAS HAD TO BE REPLACED. IN THE FIRST EPISODE ON OCTOBER 9TH, 2014, THE CAR DIED COMPLETELY AND THE MESSAGE "INOPERABLE" APPEARED IN THE MESSAGE SCREEN. THE CAR HAD TO BE TOWED IN THAT TIME. BOTH INSTANCES REQUIRED REPLACEMENT OF THE SAME SENSOR AND AN UPDATE TO THE SOFTWARE. *TR

Mileage: 17,515

WAS DRIVING DOWN THE ROAD, THE CAR STARTED HESITATING, AND LURCHING REPEATEDLY. I WAS JUST ABLE TO PULL INTO A PARKING LOT OFF OF THE BUSY STREET THAT I HAD BEEN DRIVING ON. ONCE IN THE PARKING LOT THE ENGINE TOTALLY DIED AND A MESSAGE OF "INOPERABLE" APPEARED ON THE MESSAGE SCREEN. THIS REQUIRED TOWING OF THE CAR TO THE DEALERSHIP. IT WAS DETERMINED THAT THE INTAKE MANIFOLD PRESSURE SENSOR WAS FAULTY AS WELL AS THE CRANKSHAFT POSITION SENSOR WAS FAULTY. ELECTRICAL INVESTIGATION REVEALED THAT A GROUND STUD ON THE CHASSIS WAS PAINTED OVER AND NOT MAKING CONTACT. UPDATE OF SOFTWARE, CLEANING OF CONTACTS, AND REPLACEMENT OF SENSORS RESULTED IN SMOOTH RUNNING ENGINE. *TR

Mileage: 12,082

TL*THE CONTACT OWNS A 2014 MERCEDES BENZ CLA250. THE CONTACT STATED THAT WHILE DRIVING AT 70 MPH, THE ENGINE STALLED AND THE CHECK EMERGENCY WARNING LIGHT ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED.THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VIN WAS NOT AVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 4,800.

Mileage: 4,800

I LEASE A 2014 MERCEDES BENZ CLA250. WHILE DRIVING AT 70 MPH, THE ENGINE STALLED AS THE MESSAGE BOARD DISPLAYED INOPERATIVE PRE SAFE FUNCTIONS LIMITED SEE OWNERS MANUAL. ADDITIONALLY, THE VEHICLE FAILED TO ACCELERATE. THE VEHICLE WAS DIAGNOSED AND REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 1600. *TR

Mileage: 1,600

TL*THE CONTACT OWNS A 2014 MERCEDES CLA250. THE CONTACT STATED THAT WHILE DRIVING AT 55 MPH, THE VEHICLE LOST POWER AS THE ENGINE WARNING LIGHT ILLUMINATED. THE FAILURE RECURRED SEVERAL TIMES. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECHNICIAN WAS UNABLE TO DIAGNOSE THE FAILURE. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 17,515.

Mileage: 17,515

I WAS DRIVING ON A BUSY SURFACE STREET IN LOS ANGELES WHEN MY CAR LOST ALL ACCELERATION AND THE MESSAGE POPPED UP, "INOPERABLE, SEE MANUAL". I TRIED TO PUSH THE GAS PEDAL TO QUICKLY MOVE OVER TO THE RIGHT LANE WHERE I COULD PUT ON MY HAZARD LIGHTS BUT I COULD NOT ACCELERATE. I TURNED OFF THE CAR QUICKLY AND STARTED IT AGAIN AND IT WENT BACK TO WORKING FOR NOW. I AM TERRIFIED FOR THIS TO HAPPEN AGAIN, ESPECIALLY BECAUSE IF IT HAPPENED ON A LOS ANGELES FREEWAY, I COULD EASILY BE KILLED. I AM 8 MONTHS PREGNANT AND FEAR FOR MY SAFETY AND THE SAFETY OF MY CHILD. *TR

Mileage: 8,300

I WAS DRIVING ON THE INTERSTATE THE CAR LOST ALL POWER. ON THE DASH BOARD IT READ INOPERATIVE SEE MANUAL. THE CAN WOULD NOT MOVE. I ALMOST GOT KILL IN THE TRAFFIC. ON 02/23/2015 I WAS DRIVING ON THE INTERSTATE AGAIN THE SAME THING HAPPEN AGAIN. EACH TIME I TOOK THE CAR TO THE DEALER. I AM AFRAID TO DRIVE THIS CAR BECAUSE IT IS VERY DANGEROUS. *JS

Mileage: 220

TL*THE CONTACT OWNS A 2014 MERCEDES BENZ CLA250. THE CONTACT STATED THAT WHILE DRIVING AT 30 MPH, THE ENGINE STALLED AS THE MESSAGE BOARD DISPLAYED INOPERATIVE PRE SAFE FUNCTIONS LIMITED SEE OWNERS MANUAL. ADDITIONALLY, THE VEHICLE FAILED TO ACCELERATE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 14,000.

Mileage: 14,000

I AM APPROXIMATE ON THE DATE WITHOUT GOING BACK TO SERVICE FILES. THE CAR WAS NEW TO ME AT THE END OF JANUARY 2014. THEN IN MID-MARCH, A COUPLE OF THING WERE HAPPENING. THE CRASH AVOIDANCE ALARM WOULD GO OFF FOR NO APPARENT REASON. THEN, INSIDE OF A COUPLE OF WEEKS THE CAR LOST ALL ABILITY TO ACCELERATE. FIRST TIME I WAS IN THE MIDDLE OF AN INTERSECTION. THE OTHER TWO TIMES, OPEN ROAD, IN EARLY MORNING SO LUCKILY LITTLE TRAFFIC. IN ALL 3 CASES OF THE ACCELERATION LOSS, I WAS ABLE TO COAST TO THE SHOULDER. IT IS NOT AS IF IS A DRIVE TRAIN ISSUE...IF YOU PRESS ON THE GAS AS YOU ARE COASTING, THE ENGINE IS JUST IDLE. DOES NOT REV. ONCE STOPPED COMPLETELY AND RESTARTED, EVERYTHING WAS FINE. THE DASH WARNINGS THAT CAME UP WERE "INOPERATIVE. SEE OWNER'S MANUAL" (NO LIE?!) AND THEN "PRESAFE FUNCTIONS LIMITED. SEE OWNERS MANUAL." CONDITIONS WERE CLEAR IN ALL CASES. SPEED AT THE TIME OF INCIDENTS, ONCE 15 MPH, TWICE AROUND 40 MPH. I TOOK THE CAR TO THE DEALERSHIP. THEY HAD FOR 2+ WEEKS AND THE ISSUE WOULD NOT REPLICATE ITSELF. WHEN I PICKED UP, I WAS TOLD THERE WAS AN "UPDATE" THAT WAS DONE AND MAYBE THAT WOULD PREVENT IT FROM HAPPENING AGAIN. IT DID . . .UNTIL TWO WEEKS AGO. FAST FORWARD TO JANUARY 2015. THE SAME THING HAS OCCURRED 3 TIMES IN TWO WEEKS. TWO TIMES INSIDE OF 15 MINUTES IN ONE CASE. ONCE IN A VERY RISKY MERGING TRAFFIC SITUATION. I AM WRITING THIS ON THE DAY THAT THE LAST TWO INCIDENTS TOOK PLACE. TAKING THE CAR IN TONIGHT. I REALLY DON'T WANT THE CAR BACK UNTIL I KNOW IT IS FIXED OR THEY JUST REPLACE IT. I FIND IT VERY ODD THAT THIS HAS NOT OCCURRED FOR APPROX. 6 MONTHS NOW A RASH OF THE INCIDENTS. I AM SO THANKFUL THIS HAS NEVER OCCURRED IN HEAVY TRAFFIC. I'M GUN SHY NOW. *TR

Mileage: 1,800

PURCHASE MY 2014 CLA 250 IN JANUARY 2014 FOR MY DAUGHTER. IN MAY MY DAUGHTER CALL AND SAID THE CAR JUST STOPPED RUNNING WHILE SHE WAS DRIVING IT. DIDN'T REALLY THINK ANYTHING OF IT BECAUSE SHE WAS A NEW DRIVER. ABOUT 3 WEEKS LATER SHE SAID IT DID THE SAME THING. AGAIN IN OCTOBER 2014 I WAS DRIVING THE CAR. DRIVING ABOUT 40MPH AND THE CAR JUST STOP MOVING. A MESSAGE OF INOPERATIVE CAME THE SCREEN. I WAS ABLE TO PULL TO THE SIDE OF THE ROAD. THE STEERING WAS VERY HARD TO TURN AND NOTHING WOULD WORK EXCEPT FOR THE BRAKES. IF YOU TURN THE CAR OFF AND START IT AGAIN THE CAR WILL START WORKING AGAIN. PUT THE CAR INTO THE SHOP. THEY SAID IT WAS A COMPUTER UPDATE. MERCEDES DEALER UPDATED THE SYSTEM. AS THEY WERE DRIVING THE CAR BACK TO ME THE SAME THING HAPPENED. SO THEY TOOK IT BACK TO THE DEALER KEPT IF A WEEK AND SAID THEY FIXED THE PROBLEM. THREE MONTHS LATER EXACTLY 1 YEAR HAVING THE CAR. MY DAUGHTER WAS DRIVING TO SCHOOL AND IT STOP RUNNING AGAIN AND THIS TIME THE TIRE LIGHTS CAME ON. SO I PICKED THE CAR UP FROM SCHOOL AND ON THE WAY HOME THE CAR STOP RUNNING AGAIN RECEIVED THE SAME MESSAGE AS ALWAYS THE CAR IS INOPERATIVE. THIS HAS HAPPENED IN ONE YEAR OF OWNING THE CAR 6 TIMES. THIS IS VERY DANGEROUS. I DO NOT ADVISE ANYONE TO PURCHASE THIS CAR. *TR

Mileage: 8,100

THE PRE SAFE MODE HAS HAPPENED 5 TIMES ON MY CLA 250 SINCE I BOUGHT THE CAR LAST JANUARY. I THINK THE PRE SAFE MODE IS NOT SAFE AT ALL. ALL OF A SUDDEN, THE CAR JUST LOST POWER, NO ANY FEEDBACK WHEN I STEPPED THE GAS PEDAL, THE BEST THING IS THE BRAKE STILL WORKED. AFTER RESTARTING THE CAR, THE CAR WENT WELL BUT THE ENGINE LIGHT WAS ON. HOWEVER, AFTER TWO DAYS, THE ENGINE LIGHT WAS OFF SO I DIDN'T EVEN HAVE A CHANCE TO SHOW TO THE DEALER. IT'S VERY DANGEROUS TO DRIVE THIS CAR ON HIGH WAY, ESPECIALLY IN TRAFFIC JAM. *TR

VEHICLE'S TRANSMISSION & THROTTLE RESPONSE IS JERKY & UNPREDICTABLE. ROTORS WENT BAD AT 5,000 MILES, BEGINNING TO GO BAD AGAIN AT 12,000. NUMEROUS UNKNOWN INTERIOR RATTLES.WINDSHIELD WIPER COMPLETELY FLEW OFF VEHICLE WHILE DRIVING IN HEAVY RAIN - VISIBILITY INSTANTLY REDUCED TO NEAR-ZERO. ON TWO OCCASIONS, THE CAR DISPLAYED "PRE-SAFE FUNCTIONS LIMITED/ESP INOP" MESSAGE FOLLOWED BY ENGINE IMMEDIATELY LOSING POWER ON FREEWAY, WHICH COULD HAVE ENDED VERY BADLY. NOT ONLY IS THIS VEHICLE OF POOR QUALITY, IT IS BECOMING INCREASINGLY DANGEROUS TO DRIVE. SERIOUSLY CONSIDERING PURSUING STATE LEMON LAW. *TR

Mileage: 13,000

PULLING OFF FROM A COLD START, THE CAR SLAMS INTO 2ND GEAR. THIS HAS HAPPENED 4 TIMES, EACH TIME FROM A COLD START. A LOUD BANG IS HEARD INSIDE THE ENGINE. THIS SEEMS VERY DAMAGING TO THE CAR. I TOOK IT TOO THE DEALER THE 2ND TIME IT HAPPENED AND THEY WERE UNABLE TO REPLICATE. *TR

Mileage: 10,000

DRIVING ON INTERSTATE AT 70-75 MPH ENGINE LOST POWER WITHOUT WARNING AND SPEED REDUCED TO 30 MPH WITH NO RESPONSE FROM GAS PEDAL. A SEMI RAN UP BEHIND ME AND SWERVED TO THE FIRE LANE. THIS IS THE THIRD INCIDENT IN ONE MONTH. THE OTHER TWO WERE AT 45 MPH. EACH TIME I WAS ABLE TO PULL OVER AND STOP THE CAR. ONCE IT IS STARTED IT RUNS AT FULL POWER, UNTIL IT DECIDES TO STALL AGAIN. I HAD THE CAR TOWED TO DEALERSHIP AND WILL NOT DRIVE AGAIN. I COULD HAVE EASILY BEEN IN A SERIOUS ACCIDENT. I AM IN DISCUSSION WITH GM AT DEALERSHIP TO WORK SOMETHING OUT. I WILL BE UNABLE TO SELL THIS CAR LATER IN MY OPINION BASED UPON THE COMMONALITY OF THE PROBLEM, YET THE DEALER ACTED LIKE THEY HAD NEVER HEARD OF IT. I SHOULD HAVE GOOGLED IT FIRST AND THEN REMINDED THEM OF THE ISSUE. THIS IS UNACCEPTABLE. *TR

Mileage: 14,900

ON OCTOBER 17, 2014, VEHICLE 'PRE SAFE FUNCTIONS LIMITED, INOPERATIVE' LIGHT CAME ON THE VEHICLE WHILE DRIVING ON INTERSTATE AT APPROXIMATELY 50-60 MPH. VEHICLE WOULD NOT ACCELERATE SO COASTED TO SIDE OF INTERSTATE AND CAME TO A STOP. TRIED TO ACCELERATE FROM A STOP, CAR WOULD ONLY MOVE AT A FEW MPH AND THE TRANSMISSION FELT LIKE IT WAS STUCK IN THE HIGHEST GEAR. TURNED CAR OFF AND BACK ON. PROBLEM SEEMED TO RESET AND WAS ABLE TO DRIVE HOME. DID NOT TAKE TO DEALERSHIP FOR THIS INCIDENT DUE TO READING ABOUT OTHERS' EXPERIENCE AND THAT DEALERSHIPS ARE UNABLE TO REPLICATE. *TR

Mileage: 15,200

ON SEPTEMBER 10, 2014 AND SEPTEMBER 21, 2014, VEHICLE 'PRE SAFE FUNCTIONS LIMITED, INOPERATIVE' LIGHT COMES ON THE VEHICLE AND THE VEHICLE LOSES POWER. BOTH TIMES DRIVING APPROXIMATELY 50-60 MPH. FIRST TIME DRIVING ON STREET AND WAS ABLE TO COAST HOME. SECOND TIME I WAS ON MAJOR HIGHWAY....VERY DANGEROUS! UNABLE TO ACCELERATE BOTH TIMES. TOOK VEHICLE INTO LOCAL DEALERSHIP ON SEPTEMBER 11TH, THEY WERE UNABLE TO REPLICATE ISSUE AND RETURNED CAR. DID NOT DRIVE VEHICLE FOR 1 WEEK DUE TO TRAVEL, RETURNED AND WITHIN 2 DAYS OF DRIVING THE CAR, ERROR MESSAGE RETURNED AND I WAS UNABLE TO ACCELERATE CAR. TO GET THE CAR TO FUNCTION, MUST TURN THE VEHICLE OFF AND BACK ON AND THEN IT DRIVE-ABLE. VEHICLE IS CURRENTLY BACK AT THE DEALERSHIP FOR REPAIR. THIS ISSUE ACTUALLY OCCURRED SEVERAL WEEKS PRIOR BUT I DID NOT REPORT TO THE DEALERSHIP BECAUSE THE LIGHT CAME ON AND QUICKLY WENT BACK OFF. ALSO EXPERIENCED SLOW ACCELERATION ISSUES WHEN MOVING FROM A COMPLETE STOP. *TR

Mileage: 20,000

I WAS DRIVING ON A MAIN ROAD WHEN SUDDENLY THE CAR SHUTS OFF COMPLETELY. I COULD NOT GET IT TO START, NOR PUT IT ON NEUTRAL GEAR, TO AT LEAST PUSH IT AWAY. A MESSAGE IN RED POPS UP ON THE SCREEN THAT SAYS "SERVICE REQUIRED, DO NOT SHIFT GEARS, VISIT DEALER". I COULD NOT PUSH THE CAR AT ALL, BECAUSE THE GEAR SHIFTED AUTOMATICALLY TO PARKING AND IT WON'T MOVE TO NEUTRAL. I WAS STUCK ON THE MAIN ROAD FOR 15 MINUTES. I WAS LUCKY NOT TO GET HIT OR RUN OVER BY THE INCOMING TRAFFIC. I CAUSED A PANIC ON THE STREET BECAUSE I WAS BLOCKING IT. FORTUNATELY, A POLICE CAR SHOWED UP, AND THE OFFICER HELPED ME BY DIVERTING THE TRAFFIC AWAY FROM ME. I HAD THE CAR CHECKED TWO MONTHS PRIOR TO THIS INCIDENT AT THE DEALER, AND THEY TOLD ME THAT THERE IS NOTHING WRONG WITH THE CAR, AND THAT THEY HAVE UPDATED ITS SOFTWARE TO THE LATEST VERSION. I HAD THE CAR TOWED BACK TO MERCEDES-BENZ NOW, AND WILL WAIT THE RESULTS. *TR

Mileage: 5,000

TRAVELING APPROXIMATELY 15MPH AND SLOWLY ACCELERATING, VEHICLE BECAME COMPLETELY UNRESPONSIVE TO THROTTLE INPUT, AND ENGINE REMAINED AT IDLE SPEED. DISPLAYED SHOWED THE MESSAGES "PRE-SAFE INOPERABLE" AND "SEE OWNER'S MANUAL." AFTER THE ENGINE WAS SHUT OFF AND RESTARTED, THE CAR DROVE NORMALLY. IT WAS TAKEN INTO THE DEALER FOR INSPECTION AND REPAIR, AND WAS RETURNED TO ME AFTER THE SERVICE ADVISER ADVISED ME THAT THEY COULD "FIND NO CODES." THE VERY SAME ERROR OCCURRED A FEW DAYS LATER. THIS TIME THE SERVICE ADVISER SAID THAT ERROR CODES WERE FOUND, THAT THERE WAS A "CONFLICT IN THE PROGRAMMING", THAT ALL OF THE HARDWARE CHECKED OUT, AND THAT "REPROGRAMMING THE MODULE" WILL FIX IT. 36 HOURS LATER IT OCCURRED AGAIN. THIS TIME THE ADVISER SAID THAT A MERCEDES BENZ SERVICE DATABASE INDICATED THAT THE PROBLEM WAS WITH A WIRING HARNESS IN THE THROTTLE, AND THAT REPLACING THAT HARNESS WILL FIX THE PROBLEM. *TR

Mileage: 5,200

I WAS TURNING ON TO A BUSY 3-LANE ROAD DURING RUSH HOUR, SPEED LIMIT 45 MPH WITH MOST CARS TRAVELING AT 50 MPH. WHILE ACCELERATING AFTER MAKING A RIGHT TURN ON TO THE STREET, MY CAR SUDDENLY RECEIVED A "PRE-SAFE" ERROR TO THE DASHBOARD AND STOPPED ACCELERATING WHILE HEADING APPROXIMATELY 40 MPH. AS I HAD JUST SHORTLY MADE THE TURN, I HAD NOT CAUGHT UP TO THE SPEED OF TRAFFIC AND THE SUDDEN STALL CAUSED THE CAR TO DECELERATE. THE ABRUPTNESS OF THE MALFUNCTION NEARLY CAUSED ME TO GET INTO TWO REAR END ACCIDENTS WHILE JUST USING MOMENTUM TO REACH A SPOT ON THE ROAD WHEREBY TO SAFELY STOP THE CAR. THE CAR WOULD NOT ACCELERATE DESPITE RESTARTING AND REQUIRED A TOW. THE CAR IS 3 WEEKS OLD AND WAS BOUGHT BRAND NEW. *TR

Mileage: 550

WHILE DRIVING DOWN THE ROAD THE CAR SUDDENLY WENT INTO PARK. THE PARK BUTTON WAS NOT TOUCHED, NOTHING WAS NEAR IT, AND IT COULD NOT HAVE BEEN ACCIDENTALLY PRESSED. THE CAR SLAMMED INTO PARK ON IT'S OWN. *TR

Mileage: 7,300

WHILE DRIVING THE VEHICLE LOSES POWER AND BARELY HAS ANY ACCELERATIONS. THE WARNING SIGN SAID INOP SEE OWNERS MANUAL. I HAD TO PULL OVER, RESTART CAR THEN IT WAS BACK TO NORMAL. THIS HAS HAPPENED TWICE AT THE EXACT SAME ROAD. I WAS AT A STOP LIGHT, MADE A LEFT TURN, DROVE ABOUT HALF A MILE THEN THIS STARTED. THIS IS VERY DANGEROUS! *TR

Mileage: 7,000

TL* THE CONTACT OWNS A 2014 MERCEDES BENZ CLA250. WHILE MAKING A LEFT TURN AT AN UNKNOWN SPEED, THE VEHICLE STALLED IN THE MIDDLE OF AN INTERSECTION. THE INOPERABLE POWER WARNING INDICATOR ILLUMINATED DURING THE FAILURE. THE FAILURE OCCURRED SEVERAL TIMES. AFTER EACH FAILURE, THE CONTACT WAS ABLE TO RESTART THE ENGINE AND RESUME NORMAL FUNCTION. THE VEHICLE WAS TAKEN TO THE DEALER MULTIPLE TIMES, BUT THEY COULD NOT DUPLICATE THE FAILURE. THE DEALER CONCLUDED THAT NOTHING WAS WRONG WITH THE VEHICLE. THE VEHICLE WAS NOT REPAIRED AND THE MANUFACTURER WAS NOTIFIED. THE FAILURE MILEAGE WAS 5,800.

Mileage: 5,800

CAR COMPLETELY SHUTOFF TONIGHT ON THE HIGHWAY AND LUCKILY I WAS ABLE TO GET PULLED OVER WITHOUT INCIDENT. I HAD NUMEROUS MESSAGES ON THE DISPLAY, INCLUDING "SERVICE REQUIRED, DO NOT SHIFT GEARS, VISIT DEALER" AND "ESP INOPERABLE, SEE OPERATOR'S MANUAL". THE CAR WOULD NOT DO ANYTHING ONCE I PULLED OVER, NOTHING HAPPENED WHEN I TURNED THE KEY, NO NOISES, NOTHING. MB ROADSIDE ASSISTANCE CAME AND TRIED TO JUMP START AND DISCONNECT THE BATTERY TO NO AVAIL. SO, OFF ON THE TOW TRUCK IT WENT. *TR

Mileage: 4,200

WHILE DRIVING THE VEHICLE SUDDENLY THE ACCELERATOR STARTED TO HAVE A DELAYED RESPONSE. PRESSING THE ACCELERATOR WOULD NOT DO ANYTHING FOR BETWEEN 3 TO 5 SECOND AFTER THE CAR WAS STOPPED. AFTER THE DELAY, THE CAR WOULD RESPOND AND WAS DRIVABLE, BUT AFTER EVERY SUBSEQUENT STOP, THE 3 TO 5 SECOND DELAY WOULD RETURN. THIS CONTINUED FOR THE 20 MILES THAT I DROVE TO THE DEALERSHIP TO HAVE THEM LOOK AT THE CAR AND REPAIR IT. I BELIEVE THIS UNRESPONSIVENESS OF THE ACCELERATOR TO BE A DANGEROUS CONDITION AS IT PREVENTED ME FROM BEING ABLE TO DRIVING NORMALLY AND COULD HAVE PREVENTED ME FROM MOVING MY VEHICLE IF IT WAS STOPPED AND A SITUATION REQUIRED IT TO BE MOVED QUICKLY. AT THIS TIME THIS OCCURRED THE FOLLOWING WARNING LIGHTS APPEARED ON THE DASH. THE CHECK ENGINE LIGHT CAME ON. THE ESP WARNING LIGHT CAME ON, THE ESP SYSTEM "OFF" LIGHT CAME ON, AND A MESSAGE STATING THAT "PRESAFE FUNCTIONS WERE UNAVAILABLE" APPEARED ON THE DASH BOARD COMPUTER SCREEN. THIS WAS THE SECOND TIME THIS HAPPENED TO ME. THE FIRST TIME WAS AT THE BEGINNING OF APRIL. I PULLED THE CAR OVER. RESTARTED THE CAR AND THE CONDITION FIXED ITSELF. THIS TIME, RESTARTING THE CAR DID NOT CLEAR THE CONDITION. *JS

Mileage: 7,407

THIS HAS HAPPENED MULTIPLE TIMES STARTING IN JAN. 2014 AND MOST RECENTLY APRIL 15, 2014: COME TO A STOP AT RED LIGHT (OR STOP SIGN) AND WHEN I STEP ON GAS TO GO WHEN LIGHT TURNS GREEN, ETC., NO POWER OR, AT MOST, CAR BARELY COASTS TO SHOULDER OF ROAD. IT DOES NOT SOUND LIKE THE ENGINE ENGAGES. I TURN THE IGNITION OFF AND THEN ON AGAIN AND THE CAR RUNS. THIS HAPPENS WHEN ECO STOP/START FUNCTION IS ON AND ALSO HAPPENS WHEN IT IS OFF. I AM AFRAID TO DRIVE THE CAR BECAUSE THIS HAPPENS WITHOUT WARNING. I COULD BE DRIVING THE CAR FOR A WEEK WITH NO PROBLEM AND THEN IT HAPPENS.

Mileage: 3,000

I HAVE PARTIAL VIDEO IF THIS INCIDENT. INCIDENT OCCURRED AT 991 ODOMETER MILES. AFTER DRIVING APPROX. ~300 MOSTLY CONTIGUOUS, FLAT, RURAL HIGHWAY MILES IN-BETWEEN LINCOLN, NE AND ST. LOUIS, MO (HEADING TO ATLANTA, GA) IN APPROX. 30 WEATHER ON DRY PAVEMENT, THE ENGINE STOPPED PRODUCING ENOUGH ENGINE POWER TO PROPEL THE VEHICLE AT THE 70-75 MPH THAT I WAS TRAVELING. AT APPROX. 60-65 MPH, I APPLIED ADDITIONAL PRESSURE TO THE GAS PEDAL WHICH WAS NOT EFFECTIVE. PUSHING THE GAS PEDAL TO THE FLOOR DID NOTHING EXCEPT, OCCASIONALLY, THE TRANSMISSION WOULD SWITCH QUICKLY IN-BETWEEN THE SAME TWO GEARS, WHICH REGISTERED SLIGHTLY ON THE TACHOMETER BUT DID NOTHING TO ACCELERATE THE VEHICLE OR MAINTAIN SPEED. IT ALMOST FELT AS IF THE TRACTION CONTROL WAS ACTIVATING (BUT MALFUNCTIONING) DESPITE THE GROUND BEING TOTALLY DRY. BY APPROX. 50 MPH I WAS BEING FLANKED AND TAILGATED BY TWO CLEARLY DISGRUNTLED SEMI-TRUCKS AS I TRIED TO PULL OVER TO THE RIGHT. THE VEHICLE SEEMINGLY WOULD MAINTAIN A MAX. OF 35 MPH. UPON RESTARTING THE CAR (NORMAL START), LETTING IT IDLE (NORMAL IDLE), AND THEN ATTEMPTING TO DRIVE TO A SAFER LOCATION, ITS ACCELERATION FELT RESTRICTED AT LOWER RPMS, BUT IT DID BACK UP TO HIGHWAY SPEED AND THE RESTRICTED FEELING ENDED UP BEING TEMPORARY. THE NEAREST DEALER WAS MB OF MARION, IL., APPROX. ANOTHER 200-300 MILES AWAY. ON THE WAY TO THIS DEALERSHIP, THE SAME MALFUNCTION OCCURRED AGAIN ABOUT 50-75 MILES LATER. I WENT THROUGH THE SAME PROCESS AND RESTARTED THE VEHICLE. AT THE MARION, IL DEALER, THE MECHANIC FOUND THE FOLLOWING CODE IN THE COMPUTER: PO29921 - BOOST PRESSURE OF TURBOCHARGER TOO LOW. THE MECHANIC AT THE MARION, IL DEALER AND, LATER, AT ANOTHER DEALER CLOSER TO WHERE I LIVE (MERCEDES OF SOUTH ATLANTA) WAS NOT ABLE TO REPLICATE THIS CODE AND THEREFORE NO REPAIRS HAVE EVER BEEN ATTEMPTED OR MADE. THIS ISSUE HAS NOT RE-OCCURRED HERE IN GEORGIA. *TR

Mileage: 991

1ST- ON FEB 11TH & 12TH MY 2014 CLA WHICH WAS PURCHASED AT THE MB OF PEMBROKE PINES HAD BEEN TOWED TO THE MB OF POMPANO, FL DEALERSHIP BECAUSE OF THE EPS LIGHTS, "INOPERATIVE" WARNING MESSAGES THAT WERE COMING UP AS WELL AS THE STALLING AND DELAYED ACCELERATION, WHICH I TOOK PHOTOS OF. IT WAS TOWED TO POMPANO FORM MY JOB, MY CAR WAS KEPT AT THE DEALERSHIP FOR 4 DAYS (AS OPPOSED TO THE FEW HRS I WAS TOLD THAT IT WOULD TAKE TO FIX THE COMPUTER ISSUES). NOT ONLY WAS MY CAR IN THE SHOP FOR 3 DAYS, BUT A PART THAT HAD BEEN ORDERED,WHICH MEANS SOMETHING OBVIOUSLY WASN?T FUNCTIONING PROPERLY SO IT HAD TO BE REPLACED. 2ND - I PICKED UP MY VEHICLE ON SAT FEB 15TH FROM THE POMPANO, AFTER GETTING ONTO THE I95 AND DRIVING 2 MINS, THE SAME WARNING SIGNS CAME BACK UP. I EXITED DRIVING 15MPH AND TRYING TO KEEP THE VEHICLE STABLE. MR. MIKE RODRIGUEZ WAS INSTRUCTED TO TEST DRIVE THE VEHICLE, HOWEVER, WHEN HE DID SO THE WARNING SIGNALS WERE GONE. WHY? BECAUSE A SERVICE GUY RESTARTED THE VEHICLE AND DROVE IT INTO THE SERVICE AREA. BEING THAT THE SIGNAL WAS NO LONGER VISIBLE, THE GM SUGGESTED THAT IF THERE WAS EVER A SIGNAL SENT TO THE VEHICLE IT WOULD SHOW UP IN SOME SORT OF READING THEY WERE ABLE TO DO ON THE VEHICLE. WHEN THEY RETURNED, BOTH THE GM AND MR. RODRIGUEZ INFORMED US THAT THE VEHICLE SHOWED THEM THERE WAS NO SIGNAL THAT WAS SENT TO THE VEHICLE ALL DAY. I LITTERALLY JUST SAW IT NOT 30 MINS AGO. WE LEFT & ABOUT 2 MINS FROM MY HOME IN BOCA RATON, THE SIGNAL WAS BACK WITH VENGEANCE! AT THIS POINT I TOOK PICTURES. I PULLED INTO MY DRIVE WAY, BUT THIS TIME I LEFT THE VEHICLE RUNNING. 3RD -ON MARCH 2ND AT AROUND 2:45PM, AFTER ABOUT A WEEK OF HAVING MY VEHICLE BACK, I WAS DRIVING WHEN THE SAME WARNING SIGNS AND ACCELERATION PROBLEMS WERE BACK. I LEFT IT RUNNING WITH ALL THE SIGNALS UP AND IT HAD TO BE TOWED BACK. THIS IS A SUMMARY OF THE INCEDENTS.THIS HAS TO STOP! NOT SAFE! *TR

Mileage: 5,354

ON SUNDAY, OCTOBER 27, AND TUESDAY, OCTOBER 29, 2013, MY VEHICLE LISTED ABOVE HAD WARNING LIGHTS COME ON THAT STATED, "PRE SAFE, FUNCTIONS LIMITED, INOPERATIVE." IN ADDITION TO THE WORDS, THE ESP AND ABS LIGHTS ILLUMINATED. I TOOK THE VEHICLE TO PENSKE MBZ IN WEST COVINA, CA, ON WEDNESDAY, OCTOBER 30. THEY REPAIRED THE VEHICLE BY DOING A SOFTWARE UPDATE. ON SATURDAY, NOVEMBER 2, 2013, THE CODES RETURNED AND I TOOK THE VEHICLE BACK TO WHERE I BOUGHT IT, ENCINO, CA, MBZ. I WAS TOLD THEY COULD NOT REPLICATE THE CODES AND THEY FOUND NO PROBLEM. THIS IS UNACCEPTABLE! THE VEHICLE IS STILL AT ENCINO MBZ AS THEY ARE TRYING TO REPLICATE THE PROBLEM. WHEN THIS MALFUNCTION OCCURS, THE VEHICLE LOSES POWER AND HAS VERY LIMITED ACCELERATION. IT HAS OCCURRED TWICE ON CITY STREETS AND TWICE ON THE FREEWAY, BOTH IN ECO AND SPORT MODE. ON THE CITY STREETS I AM ABLE TO JUST PULL TO THE CURB. ON THE FREEWAY, IT BECOMES A POSSIBLE LIFE THREATENING EMERGENCY. THERE IS ONLY VERY GRADUAL ACCELERATION, AND AT 65MPH, LIMITED ACCELERATION IS VERY DANGEROUS. THESE FOUR OCCURRENCES HAVE TAKEN PLACE IN LESS THAN A 10 DAY PERIOD AND NO LONG TERM REPAIR HAS YET BEEN ACCOMPLISHED! *TR

Mileage: 1,700