2016 MERCEDES BENZ GLC300 Engine Problems

The contact owns a 2016 Mercedes-Benz GLC300. The contact stated that while driving 45-50 MPH, the engine experienced rough idling and the vehicle was shaking violently. Several unknown warning lights were illuminated. The contact pulled over and turned off the vehicle. The vehicle was towed to an independent mechanic, who determined that cylinder #1 had a cracked piston and the engine needed to be replaced. The vehicle was then towed to another independent mechanic, who also determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure, but no assistance was provided. The failure mileage was approximately 90,000.

Mileage: 90,000

PVC valve indicator engine light keeps appearing after being replaced twice

Check engine light on-pvc failure. Code PO52E-71as determined by reliable repair shop. Recommended to have vehicle repaired by dealer. Shop advised part is vital to emissions system.

When driving the car, the engine began to violently shake and fail. The engine ended up having a piston failure due to a small wrist pin and needed the entire engine block replaced. I was lucky that I was not on the freeway or in a more dangerous spot when the engine failed while driving.

Diagnose: code P05271 - Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation has a malfunction. Mercedes Benz extended warranty to 15 yr / 150k miles for intake assemble which resolve this issue. Like to acquire a confirmation letter from Benz to cover the repair by the Benz dealer

The P052E error has popped up which requires the replacement of the PVC assembly. This is a known issue with these engines and causes the engine to run erratically. Mercedes knows that the issue is common. Please investigate and issue a recall if applicable.

I lost power on while driving at speed and almost got rear-ended before pulling over. I had to tow the car to a mechanic. After diagnosis it turned out the pistons are cracked and had to be replaced as well as the rod bearings. The pistons have a very abnormal burn pattern and rod bearing wear per my mechanic. This is a beautiful car and I take above average care of it. No car sold in the US should have pistons crack at such a short amount of miles. I believe Mercedes Benz should be held liable for their engineering error.

2016 GLC300 - Fault code P052E71 positive crankcase ventilation regulatory valve displayed on console. I reset code and it came up again in a few days. Plaza Mercedes in St.Louis stated this is a common failure that requires digging deep into the engine. I had valve replaced 15SEP22 costing $1614.36. Invoice is attached.

Check Engine light P052E came on while driving. No collision, normal conditions other than first very cold night of the season. Looked it up and seems to be a common issue with this model.

Got the MIL obd2 error code P052E - Positive Crankcase Ventilation Regulator Valve Performance. After some research this seems to be a common issue for this vehicle and other similar Mercedes Benz vehicles with the same engine. It is something that it is extremely expensive to fix (2000) and very labor intensive. I believe that Mercedes Benz should recall these vehicles and replace the Intake line due to its constant failure on many vehicles including mine.

Crankcase ventilation valve issues

Got the MIL obd2 error code P052E - Positive Crankcase Ventilation Regulator Valve Performance. After some research this seems to be a common issue for this vehicle and other similar Mercedes Benz vehicles with the same engine. It is something that it is extremely expensive to fix (+$1500) and very labor intensive. I believe that Mercedes Benz should recall these vehicles and replace the Intake line due to its constant failure on many vehicles including mine.

During normal highway driving, the check engine light energized in the display. At the same time, engine power was lost, and the vehicle could no longer accelerate. The Mercedes Benz dealership was less than a mile away, so I went directly there at a slow speed without damaging the engine. Upon inspection, the dealership found that the engine wiring harness was completely engine oil soaked and the oil drained down into the engine control unit (computer), causing loss of one of two turbochargers and loss of engine control and power. It is suspected that the oil originated from one or multiple of the camshaft sensors that are connected to the engine wiring harness. The engine oil traveled through the wiring harness and then completely soaked to engine control unit, which malfunctioned. If this happened while overtaking another vehicle or trying to avoid another, then I would have had a serious accident. I had insufficient engine power to avoid other cars and luckily was in the far-right lane to be able to exit the highway without an accident or damaging my engine due to the higher-than-normal rpms. The vehicle is currently at the dealership and requires a new engine wiring harness which may require removal of the engine to access and replace, a new engine control unit due to being engine oil soaked, and possibly a new turbocharger. This repair could cost well over $10,000 for parts and labor. The vehicle just had its annual maintenance service in September and no oil leak from the engine wiring harness was noted by technicians during the maintenance. The dealership continues to search and localize exactly where the oil originated but believes that either one or multiple camshaft sensors is the cause. The dealership does not know how long it will take to repair the vehicle due to the parts needed and the extent of labor that is required.

Piston 1 cracked while driving on the highway. My sibling was driving on the highway when the engine suddenly started misfiring and losing power because it lost compression on the piston that cracked. I was lucky enough that I have mechanic experience to replace all the damaged components myself and paid out of pocket. I was super fortunate that the cylinder walls did not get damaged when this happened thus not needing an entire engine replacement which would cost around $10,000 from mercedes. I had to go pick up a trailer from UHaul and go pick up the vehicle from where it broke down. Thinking about this from the perspective of a person who does not have access to rent a trailer, a vehicle to pull said trailer with, or the mechanic experience to fix the vehicle themselves, the cost to get this issue resolved would be much much more than it cost me.

While driving on the NYS Thruway last week, when I accelerated to pass another car, my engine bucked and kicked followed by the "check engine" light coming on.In very heavy traffic, I was able to pull to the shoulder. I called my service garage and they suggested I not drive the car for safety reasons. When the tow truck arrived, I briefly started the car with the same bucking and kicking from the engine. The car was taken to my regular garage where the "check engine" codes showed issues with the fuel injector and fuel injection system. I was told there is an existing RECALL CAMPAIGN # 2022030003 for the same year, make and model as mine but, my VIN is not part of that RECALL. I would like your help as I do not believe Mercedes-Benz is being fair or equitable in this RECALL. ThankYou

1)-The crankcase ventilation valve needs to be replaced. This seems to be common problem with these cars. 2)-No safety issues. 3)-Yes many failures as per the internet reports. 4)-Yes- Mercedes 5)-Unknown

While operating the vehicle at highway speed, the Check Engine Light illuminated on the vehicle dashboard and remained constant. The associated malfunction code(s) displayed were P052E71 (actuator blocked) as well as P06DA00 (electrical-open circuit). The vehicle is available for inspection upon request. The vehicle emitted pungent odor and fumes into the cabin and demonstrated sudden decreased acceleration and rough idling. The problem has yet to be inspected by the manufacturer as it is not sure whether it is safe to operate. No other warning lamps illuminated prior to the failure. Unsure if cold start failure is a symptom associated with current issue or if an electrical problem related to prior recall.

Got a Check Engine Light at 32,400 miles and the code said it was the Positive Crankcase Ventilation Regulatory Valve. It was under warranty, the job requires over 6 hours of labor, and it's due to a intake breather valve getting gummed up with oil/oil vapors/condensation. Well, the check engine light came on again at 58,000 miles and 3 years later. Now not under warranty, the dealer quoted 6 hours and $1435 to do the same repair that was done before. The part is EXTREMELY difficult to get to in order to change, and requires the removal of many engine components, including one of the engine mounts. It seems like this is one of the most common repairs for this series of car. It's been so troublesome, that Mercedes has redesigned the part.

The vehicle engine amber light on, everything else looks like normally. Bring the vehicle to Mercedes dealership to diagnose and fix. After dealership fix, we find out this vehicle maximum speed is 61 during driving on the freeway and it cannot speed over 61. Also, the engine amber light is on again and seatbelt is not working well. We have safety concerns when driving this vehicle on the freeway. Thanks.

AT 40,000 MILES, ONE OF THE WRIST PINS SNAPPED AND THE PISTON BROKE OFF. THIS CAUSED COMPLETE ENGINE FAILURE AND THE WHOLE ENGINE NEEDS TO BE REPLACED. THIS IS THE SAME PROBLEM THAT CAUSED A RECALL WITH THE 2015 MODEL. THE DEALERSHIP IS MAKING ME PAY FOR THE LABOR, BUT MERCEDES DONATED THE ENGINE (PROBABLY BECAUSE THEY KNOW IT'S THEIR FAULT). SO I'M WONDERING IF THERE SHOULD BE A RECALL ON THIS MODEL AS WELL.

Mileage: 40,000

VEHICLE WAS GOING ON THE LEFT MOST LANE OF THE I580 EASTBOUND AT ADAPTIVE CRUISE AT 65MPH. BOTH STEERING AND SPEED WAS UNDER CONTROL BY THE THE ADAPTIV E CRUISE FEATURE. I WAS HAVING MY HAND ON THE STEERING AND FOOT ON THE BRAKE. ALL OF SUDDEN CAR TOOK LEFT TURN ON ITS OWN AND CRASHED INTO SIDE CONCRETE RAIL FOLLOWED BY A QUICK TURN AND CAME BACK TO THE HALT IN THE MIDDLE OF THE 2ND HIGHWAY LANE. THINGS HAPPENED SO QUICKLY THAT I COULD NOT EVEN REALIZE WHAT HAPPENED TO THE ADAPTIVE CRUISE WHICH LEAD TO THIS SUDDEN TURN. I WOULD LIKE YOU OR NHTSA TO INVESTIGATE THE MATTER. I AM 7 MONTH PREGNENT AND IN SIGNIFICANT PAIN CAUSED BY THIS ACCIDENT. I AM NOT ABLE TO TAKE ANY HARD DRUGS BECAUSE OF MY PREGNANCY. IT HAS BEEN A BIG TRAUMA FOR ME AT THIS POINT OF MY PREGNANCY. IT WILL BE GOING TO BE VERY TOUGH FOR ME FROM NOW TO TRUST ON THE FEATURES ADVERTISED AND SOLD TO US BY MERCEDES. WE HAVE BEEN IN TOUCH WITH MERCEDES FOR OVER A MONTH. BUT THEY ARE NOT SHOWING ANY PROACTIVENESS TO LOOK INTO THE MATTER. THEY ARE INTENTIONALLY DELAYING THE PROCESS HOPING WE WILL GIVE UP SOONER THAN LATER. I WOULD REQUEST NHTSA TO INTERVENE AND TAKE SEVERE STEPS TOWARDS MERCEDES. MRS MARY ELIZABETH FROM MERCEDES HAS BEEN CONFUSING ABOUT THE PROCESS AND HAS NO CLUE ABOUT WHAT IS NEXT. SHE IS NOT WILLING TO PROVIDE ANY INFORMATION AND AFTER WASTING 20 DAYS SHE IS BLAMING INSURANCE COMPANY DID NOT PROVIDE PERMISSION. THEY NEVER BOTHER TO CALL ME AND UPDATE ME ABOUT PROCESS AND JUST FORMALLY SEND AN EMAIL WITH HALF BAKED INFORMATION.

Mileage: 72,000

SINCE WE PURCHASED THIS CAR IN DECEMBER 2015, WE HAVE HAD A SERIES OF ELECTRICAL AND ENGINE PROBLEMS THAT DO NOT SEEM TO FIXABLE BY THE DEALER. THE CAR WAS SERVICED (3 YEARS OR 30,000 MILES) *CW *BF*JB CONSUMER ALSO HAD ISSUES WITH FAULTY RADAR SENSOR, POWER CONTROL UNIT, ENGINE LIGHT, AND FAULTY CRANKCASE VENT SYSTEM.*JB

Mileage: 27,852

TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ GLC300. WHILE DRIVING 65 MPH, THE VEHICLE VIOLENTLY VIBRATED AND SMOKE WAS DETECTED UNDER THE HOOD. THE VEHICLE WAS TAKEN TO FLETCHER JONES IMPORTS MERCEDES-BENZ (7300 W SAHARA AVE, LAS VEGAS, NV 89117, (702) 364-2700) WHERE THE CONTACT WAS INFORMED THAT THE ENGINE NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 37,000.

Mileage: 37,000

TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ GLC300. WHILE DRIVING BETWEEN 65-70 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE CHECK ENGINE WARNING INDICATOR ILLUMINATED AFTER THE VEHICLE STALLED. THE CONTACT WAS ABLE TO COAST THE VEHICLE OVER TO THE SIDE OF THE ROAD. WHEN THE CONTACT POWERED OFF THE ENGINE AND RESTARTED THE VEHICLE, IT FAILED TO ACCELERATE. THE CONTACT'S HUSBAND TOOK THE VEHICLE TO MERCEDES-BENZ OF ARCADIA (LOCATED AT 101 N SANTA ANITA AVE, ARCADIA, CA 91006, (626) 701-8904) WHERE AN UNKNOWN DIAGNOSTIC TEST WAS COMPLETED. THE VEHICLE WAS REPAIRED, BUT STALLED AGAIN WHILE TRAVELING 60-65 MPH. THE CHECK ENGINE INDICATOR ILLUMINATED AGAIN AFTER THE FAILURE. THE CONTACT ACTIVATED THE HAZARD LIGHTS AS THE VEHICLE BEGAN TO ACCELERATE TO 5 MPH. THE CONTACT TURNED OFF AND RESTARTED THE VEHICLE, BUT THE FAILURE RECURRED. THE CONTACT MANAGED TO DRIVE HOME AT 5 MPH. THE VEHICLE WAS IN THE PROCESS OF BEING TOWED TO MERCEDES-BENZ OF ARCADIA. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN.

TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ GLC300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING). THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. MERCEDES-BENZ OF FAIRFIELD (2950 AUTO MALL PKWY, FAIRFIELD, CA 94533) STATED THAT THE PARTS WERE UNAVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT.

TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ GLC300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING) HOWEVER, THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE DEALER WAS CONTACTED AT: LOKEY MERCEDES BENZ, CLEARWATER, FL, 19820 US HWY 19 NORTH, CLEAR WATER, FL 33764, 888-992-3898, AND CONFIRMED THAT THE PARTS WERE NOT AVAILABLE FOR THE RECALL REMEDY. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE AND WAS NOT ABLE TO CONFIRM WHEN THE PARTS WERE TO BECOME AVAILABLE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT

TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ GLC300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING); HOWEVER, THE PARTS TO DO THE REPAIR WERE UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE DEALER (MERCEDES-BENZ OF RICHMOND LOCATED AT 8225 W BROAD ST, HENRICO, VA 23294; (804) 755-9300) WAS CONTACTED AND CONFIRMED THAT THE PARTS WERE NOT AVAILABLE FOR THE RECALL REMEDY. THE MANUFACTURER WAS CONTACTED AT 800-367-6372, BUT WAS NOT ABLE TO CONFIRM WHEN THE PARTS WERE TO BECOME AVAILABLE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

A RECALL WAS ISSUED ON MY VEHICLE 4 MONTHS AGO AND THE DEALER AND MANUFACTURER ARE STILL STATING THAT THEY DO NOT HAVE THE PART TO PROPERLY REPAIR THE VEHICLE. THEIR NOTICE STATES THAT THERE IS A CONCERN THAT OVERHEATING OF THE STARTING CURRENT LIMITER COULD CAUSE SURROUNDING COMPONENTS TO MELT & POTENTIALLY CREATE THE RISK OF FIRE. I NEED THIS ISSUE FIXED BY THE MANUFACTURER & 4 MONTHS IS AMPLE TIME FOR THEM TO HAVE THE REPAIR PART AVAILABLE.

TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ GLC300W4. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); HOWEVER, THE PART FOR THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE DEALER CONFIRMED THAT THE PARTS WERE NOT AVAILABLE FOR THE RECALL REMEDY. THE MANUFACTURER DID NOT KNOW WHEN THE PARTS WOULD BE AVAILABLE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE. PARTS DISTRIBUTION DISCONNECT.

TL* THE CONTACT OWNS A 2016 MERCEDES BENZ GLC300. THE CONTACT STATED THAT WHILE DRIVING AT 40 MPH, THERE WAS AN ABNORMAL BURNING ODOR COMING FROM THE VEHICLE AS THE CHECK ENGINE WARNING LIGHT ILLUMINATED THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 10,000. UPDATED 06/02/17*LJ *CN

Mileage: 10,000

THIS CAR IS SUBJECT TO A SAFETY RECALL DATED MARCH 8, 2017. MANUFACTURER AND DEALER HAVE FAILED TO OFFER REMEDY WITHIN 60 DAYS. I AM TOLD BY BOTH MERCEDES BEN USA AND BY THE LOCAL DEALER FROM WHICH WE PURCHASED THE VEHICLE (PURCHASED NEW) THAT NO REMEDY IS CURRENTLY AVAILABLE.

TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ GLC300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); HOWEVER, THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

I WAS STOPPED AT A RED LIGHT ON A MAJOR THREE LANE EACH DIRECTION HIGHWAY IN SUBURBAN IL, WHEN I STARTED TO GO AFTER THE LIGHT CHANGE THE CAR STUTTERED AND TURNED OFF. IT WAS RENDERED COMPLETELY INOPERABLE. THE CAR WOULD NOT SHIFT INTO NEUTRAL. THE RADIO AND WINDOWS WORKED, BUT NO OTHER ELECTRICAL COMPONENTS WORKED (E.G. DOOR LOCK/UNLOCK).

Mileage: 7,000

I PURCHASED MY NEW VEHICLE DEC 2015. I HAVE HAD IT IN THE SHOP 2 TIMES FOR AN ESTIMATED TIME OF 3 TO 4 WEEKS. 1ST MY STEERING MECHANISM LOCKED UP AND WOULDN'T ALLOW ME TO MOVE MY STEERGING WHEEL UP OR DOWN. IN OR OUT. THEN, AT THE SAME TIME, MY CAR WAS SHIFTING ERRATICALLY. IT WOULD FEEL LIKE IT WAS IN 5TH GEAR, AND THEN IMMEDIATELY DROP TO 1ST GEAR. THEY COULDN'T FIND ANYTHING WHEN THEY HAD THIS VEHICLE AND THEY HAD IT FOR ABOUT 5 DAYS. NOW, MY ENGINE BLEW. THEY STATED VIA TEXT MESSAGE THAT THE CAM SHAFT BROKE AND PUT A LARGE HOLE IN MY ENGINE BLOCK. THANK GOD IT DIDN'T COME THRU THE FRONT OF THE CAR AND STRIKE ME. **I WAS DRIVING MY CAR, WHEN I SUDDENLY HEAR A LOUD BANG, AND MY CAR IMMEDIATELY STARTED SMOKING FROM THE ENGINE, AND I COULD SEE I WAS LOOSING OIL FROM MY REAR VIEW MIRROR. I WAS ABOUT A BLOCK FROM MY HOUSE. I COULDN'T EXCEL VERY FAST, BUT MADE IT. IT FELT LIKE THE ENGINE WAS ON FIRE, SO I PULLED INTO MY HOUSE BY MY HOSE, TO HOSE THE FIRE DOWN. I DIDN'T SEE A FIRE, JUST A LOT OF BLACK SMOKE, SO I PULLED VEHICLE OUT IN STREET SO IT WOULDN'T LEAK OIL IN MY DRIVEWAY. I CONTACTED MERCEDES TO REPORT THE PROBLEM. I REQUESTED A NEW VEHICLE, WHICH THEY ARE REFUSING.

Mileage: 14,000

MESSAGE: DATE: 06/07/2016: RECENTLY, I PURCHASED A 2016 MERCEDES GLC300 AND WAS VERY UNHAPPY WITH THE FACT THAT THE ECO MODE IS THE DEFAULT AND IT HAS TO BE TURNED OFF MANUALLY EACH TIME YOU START THE ENGINE. I CALLED MERCEDES AND THEY SAID THERE IS NO WAY TO TURN IT OFF COMPLETELY. I BELIEVE THIS PRESENTS A HIGH RISK FOR STALLS THAT COULD POSSIBLY RESULT IN SEVERE BODILY HARM AND EVEN DEATH. WHEN THE CAR IS STOPPED THE ENGINE TURNS OFF AND WILL START IF ONE PRESSES THE GAS PEDAL. FOR EXAMPLE; WHEN TURNING LEFT AT AN INTERSECTION IT IS VERY UNCOMFORTABLE TO KNOW THAT THE ENGINE IS TURNED OFF AS YOU START TO PRESS THE GAS PEDAL--WHILE A LARGE TRUCK IS COMING VERY FAST. ONE JUST HOPES THAT THERE IS NO DELAY OR PAUSE WHEN YOU PRESS THE GAS PEDAL. I FIRMLY BELIEVE THAT THIS ECO ALWAYS ON (EXCEPT WHEN YOU REMEMBER TO PRESS A BUTTON TO TURN IT OFF) PRESENTS THE POTENTIAL FOR A VERY SERIOUS ACCIDENT. MERCEDES SHOULD PROVIDE AN OPTION THAT WILL ALLOW THIS ECO MODE TO BE SET TO ALWAYS OFF. THANK YOU! [XXX] MAIL: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

Mileage: 16

DATE: 06/06/2016: RECENTLY PURCHASED A 2016 MERCEDES GLC300 AND WAS UNHAPPY WITH THE FACT THAT THE ECO MODE IS THE DEFAULT AND IT HAS TO BE TURNED OFF MANUALLY EACH TIME YOU START THE ENGINE. I CALLED MBUSA AND THEY SAID THERE IS NO WAY TO TURN IT OFF COMPLETELY. I BELIEVE THIS IS A SAFETY HAZARD WITH SERIOUS RISK OF BODILY INJURY OR DEATH. WHEN THE CAR IS STOPPED THE ENGINE TURNS OFF AND WILL START IF ONE PRESSES THE GAS PEDAL. WHEN TURNING LEFT AT AN INTERSECTION IT IS VERY UNCOMFORTABLE TO KNOW THAT THE ENGINE IS TURNED OFF AS YOU START TO PRESS THE GAS AS A LARGE TRUCK IS COMING VERY FAST. ONE JUST HOPES THAT THERE IS NO DELAY OR PAUSE WHEN YOU PRESS THE GAS PEDAL. I FIRMLY BELIEVE THAT THIS ECO ALWAYS ON (EXCEPT WHEN YOU REMEMBER TO PRESS A BUTTON TO TURN IT OFF) PRESENTS A HIGH RISK HAZARD. MERCEDES SHOULD PROVIDE AN OPTION THAT WILL ALLOW THIS ECO MODE TO BE SET TO ALWAYS OFF.

Mileage: 16

THREE WEEKS AFTER BUYING THE GLC300 4MATIC THE ENGINE MISFIRES, GOT STRANDED IN AC NEW JERSEY, THE CAR WAS AT THE DEALER FOR 3 WEEKS, THEY REPLACED ALL FUEL INJECTOR/COILS AND IT KEPT HAPPENING, THEN THE FUEL MODULE GOT REPLACED AND IT RAN FINE FOR 4 WEEKS AND THE PROBLEM CAME BACK, GOT STRANDED IN BOSTON, THE CAR WAS AT THE DEALER FOR 2 WEEKS, THIS TIME THEY REPLACED THE ENGINE CONTROL UNIT (TODAY 4-22-16), I'M PICKING IT UP TOMORROW. I OWN THE CAR FOR 12 WEEKS AND ONLY BEEN ABLE TO DRIVE IT 7 WEEKS, SO DISAPPOINTED IN MERCEDES BENZ.

Mileage: 1,450

STARTER MOTOR FAILURE IN "ECO START" MODE AT INTERSECTION. WAS IN AN INTERSECTION WHEN CAR STALLED AND THREW A CODE. STARTER MOTOR HAD TO BE REPLACED IN FULL. VEHICLE HAD LESS THAN 1,000 MILES ON IT AND WAS 3 WEEKS OLD AT THE TIME OF THE EVENT.

Mileage: 900