2019 AUDI Q8 Power Train Problems

Car makes creaking sounds when going over bumps and turning left or right.

While driving warning light came on electrical malfunction on highway cat lost all power following a series of light’s indicting multiple malfunction then transmission disengaged I was able to coast to a stop , was unable to get out of vehicle due to car not unlocking

Driving vehicle at a low/medium rate of speed, and car completely shut off without warning. Check engine light appeared after restarting the vehicle. This is the second time this has happened to me since November 2022. I filed a report then as well. This car should not be allowed on the road and Audi should be forced to buy it back. The vehicle has less than 35,000 miles. Dealer has not confirmed what the issue is this time.

48v mild hybrid system failed, car went completely dead in rush hour traffic putting me and other drivers in danger.

Electrical malfunction illuminated on the dash than brake malfunction illuminated than the vehicle lost all power no power to windows locks but I was able to roll off an exit and waited for a tow truck to tow to nearest dealer

November 18, 2022 a warning lamp of electric system problem was displayed. There is no local Audi dealer and I decided to take the vehicle to my local automotive repair shop that does non warranty repair on Audis. I drove approximately 6-8 miles after the light came on and was one half mile from the service technicians when within 300 yards the vehicle became sequentially inoperable. First power steering, then transmission, brakes , ended with engine failure. I was in rush hour traffic and unable to steer off the road so I was blocking traffic near an intersection. My flashers and power windows were all that functioned. The doors were locked. When the tow truck arrived he let me out of the car. I was not injured and the vehicle was not hit either. The vehicle was transported to Audi Beaverton Oregon and now 3 1/2 months later is still there because there are no available starter/generator units available in this country. That unit failed and was the cause for my Audi’s complete shutdown. This was a potentially very dangerous situation and needs to be reported for a recall campaign. I have read that there are thousands of similar failures of the starter/generator systems in the USA and no available parts. I still have no estimate from my Audi Beaverton dealer/sevice supervisor as to when I can expect to get my car repaired and returned to me. They have not provided a loaner vehicle and refuse to cover the full cost of a rental car. I am disappointed in Audi’s level of customer service and communication.

Got Electrical System Malfunction to start. I called service and they said car was safe to drive. Continued driving got a fault for automatic start/Stop malfunction, followed by: Right lug nut loose Right brake light malfunction Parking brake malfunction Distance indicator malfunction Power Steering malfunction Drive train ,malfunction. Car engine started hesitating and dash went totally blank. Car was hard to steer , luckily I live near the dealership. Dealer said there are 30 cars in their service department with the same problem. I am #3000 on Audis waitlist for parts to fix problem. 48 volt battery and alternator.

The Generator (Part #: 4N0903028P) failed causing the car to shutoff while driving. This is a known issue by Audi as it has issued a TSB. Further steps must be taken by the OEM to ensure safe operation of the vehicle by its owners. This is a safety issue that must be resolved soonest!

Vehicle lost all power and control while driving 45mph. First electrical system failure warning came on. Within 2 minutes the transmission slipped into neutral and 15 seconds later the vehicle lost power and I coasted to a stop. I was told by Audi dealership service that the starter generator failed. They mentioned they currently have over 20 vehicles in their shop and over 25 at their other location with the same problem. They also said over 1,000 cars nationwide had same problem and the part to repair is back ordered and no reasonable estimate of repair time.

Electric System Mal Function. The Car was flashing all signals. It asked to pull over and said there is a danger of car turning over. We called audi assistance. The tow truck driver could not load the car as the wheels were all locked up.

I purchased a used 2019 Audi Q8 Prestige Plus, with Sportline Pkg on 9/7/21. Car had approx. 18,500 miles. The car attempts to shut off when deaccelerating at any speed below 3000 rpm. There is also a significant throttle delay between the time you push the gas pedal and when the engine responds. To be clear the car is in Dynamic mode and the Start/Stop mode is deactivated. It appears that under certain conditions the car is trying to determine if it should shut down or continue running. The Audi 37M6 update has been performed on my car which was supposed to correct the problem. The Audi Knoxville Shop Foreman drove the car and experienced the problem, contacted Audi Technical Assistance center (case# HS-822562) and was told that the car had the latest software correction. The Shop Foreman wanted to erase the transmission clutch adaptations to see if the car could relearn the shift process but was advised by Audi Technical Assistance not to erase the transmission clutch adaptations and would not allow the Shop Foreman access to the car software in an effort to diagnose the problem. Note: there was a class action lawsuit in May 2020 for this problem that was dismissed because the car manual states the car can experience a delay when restarting from the Start/Stop mode. However, my issue occurs when the Start/Stop system is turned off. There is no continuous throttle response below 3000 rpm with the Start/Stop system turned off. I was given a 2021 Q7 with a 2.0 as a loaner car while my Q8 was in service and I did not experience any of the issues I have with my Q8. I was advised by my dealership to also write a letter to Audi USA as the dealership acknowledges there is a major problem and they want to try fix the issue but will not be given access to the car software to troubleshoot the issue. This is a dangerous problem.

I'M VERY UPSET WITH NHTSA AND AUDI. I SUBMITTED A COMPLAINT WITH NHTSA ON 10/22/20 AND THE COMPLAINT NUMBER IS 11365744. AGAIN AS STATED IN MY COMPLAINT THIS IS AN ACTUAL SAFETY ISSUE. I THEN TOOK THE VEHICLE INTO THE DEALERSHIP FOR THEM TO LOOK AT THE PROBLEM. WELL IT TURNS OUT THAT THE DEALERSHIP'S SERVICE DEPARTMENT HAS HAD A NUMBER OF COMPLAINTS JUST LIKE MINE. IT ALSO TURNS OUT THAT AUDI HAS A FIX FOR THE PROBLEM. THE FIX IS A SOFTWARE UPDATE 37M6. I'M GLAD THE ISSUE HAS BEEN FIXED ON MY VEHICLE BUT THE REAL ISSUE IS THAT NHTSA AND AUDI ARE AWARE OF THIS FIX BUT BOTH OF THESE ENTITIES ARE NOT REQUIRING THE FIX TO BE MADE VIA A GOV'T ISSUED RECALL. AUDI CALLS THIS FIX A "CAMPAIGN". AUDI IS AVOIDING THE STANDARD PRACTICES OF NHTSA BY REFERRING TO THIS PROBLEM AND FIX AS A CAMPAIGN WHICH IS OUTSIDE OF THE NORMAL TECHNICAL SERVICE BULLETIN AND SAFETY RECALL PROCESS. HAS NO ONE AT NHTSA OR AUDI LEARNED THE LESSONS OF THE GM DEBACLE WITH THE IGNITION SWITCH. THIS COVER UP BY NHTSA/DOT AND AUDI IS A COMPLETE AN UTTER DISGRACE. TO ALLOW AUDI TO OPERATE OUTSIDE OF THE NHTSA SYSTEM IS A COMPLETE FAILURE. NHTSA NEEDS TO MANDATE AUDI ISSUE A SAFETY RECALL ASAP!

Mileage: 8,130

OUR A8 HAS ISSUES WITH LAG TIME WHEN ACCELERATING FROM A STOP OR A SLOW SPEED OF LESS THEN 10 MPH. THE VEHICLE SEEMS TO STOP RUNNING PRIOR TO A FULL STOP AND IF THE ACCELERATOR IS DEPRESSED NOTHING HAPPENS FOR ABOUT 5 SECONDS. THIS IS EXTREMELY DANGEROUS AND LEAVES US AT RISK OF BEING INJURED OR KILLED. THIS ISSUE STARTED JUST A FEW MONTHS AFTER PURCHASE AND HAS GOTTEN CONTINUALLY WORSE. WE HAVE ALSO ENCOUNTERED THIS ISSUE EVEN AFTER A FULL STOP AND THEN TRYING TO ACCELERATE FROM A FULL STOP. IT HAS EVEN HAPPENED WHEN DRIVING ON AN INTERSTATE HIGHWAY WHEN TRYING TO PASS ANOTHER VEHICLE. THE DELAY IN ACCELERATION IS VERY DISCONCERTING AND DANGEROUS TO SAY THE LEAST.*DT*JB

Mileage: 4,000

I LEASED THIS 2019 AUDI Q8 IN DECEMBER 2018 FROM MY LOCAL AUDI DEALER AND IT HAS HAD SO MANY TECHNICAL ISSUES FROM THE START. I'VE HAD IT IN FOR SERVICE ISSUES 5 OR 6 TIMES. IT KEPT SHOWING THE OIL SYMBOL AND SAID THERE WAS TOO MUCH OIL AND WAS CHECKED AND THEY SAID IT WAS JUST A COMPUTER ISSUE. THEN THEY REPLACED A PART AND IT HAPPENED AGAIN NOT LONG AFTER. THEY THEN CLAIM THE REPLACEMENT PART WAS FAULTY. SINCE THE BEGINNING, IT HAS HAD ISSUES ACCELERATING WHEN IT IS IN THE ENERGY SAVING MODE, WHICH IS DEFAULT AND YOU HAVE TO DISABLE IT EVERY SINGLE TIME YOU USE THE CAR. THE CHECK ENGINE LINE HAS BEEN ILLUMINATED MULTIPLE TIMES AND WHEN SERVICED, THEY CLAIM IT IS SAFE TO DRIVE AND THAT AUDI IS WORKING ON A COMPUTER FIX TO THIS PROBLEM. NOW THE "DRIVE SYSTEM: MALFUNCTION! PLEASE CONTACT SERVICE" LIGHT IS CONSTANTLY ILLUMINATING AS IS THE CHECK ENGINE LIGHT (PICTURE ATTACHED). THIS IS BY FAR THE MOST EXPENSIVE CAR I HAVE EVER HAD AND IT HAS HAD MORE ISSUES THAN ANY OTHER CAR I HAVE HAD. I'M NOW VERY CONCERNED THAT I AM PUTTING MYSELF AT RISK FOR DRIVING THIS CAR.

Mileage: 8,950

THE CAR WILL UNPREDICTABLY LOSE ALL POWER FOR 2-3 SECONDS. THIS HAS MORE THAN ONCE NEARLY CAUSED A FATAL ACCIDENT!!!!!!! THE MANUFACTURER IS AWARE OF THE PROBLEM BUT UNABLE OR REFUSING TO FIX IT. PLEASE SAVE LIVES TODAY AND RECALL THE CAR.

Mileage: 11

WHEN DRIVING IN ANY STANDARD DRIVING MODE, WHEN YOU START TO COME TO A STOP WITH AUTO S/S ENABLED (E.G. SLOW DOWN) TO LESS THAN 6MPH, THEN ACCELERATE AGAIN, THERE IS A CONSIDERABLE LAG FOR THE VEHICLE TO START ACCELERATING AGAIN (ABOUT 1-2 SECONDS). THIS IS ESPECIALLY DANGEROUS WHEN MAKING LEFT TURNS WHEN THERE IS CROSS TRAFFIC AS THE VEHICLE OFTEN DRIFTS INTO THE INTERSECTION AND YOU CAN'T QUICKLY ACCELERATE AWAY. HAVE HAD MANY CLOSE CALLS AND THE ISSUE IS EASILY REPLICABLE ON ANY 2019 Q8.

Mileage: 3,010

AUTO START/STOP IS SO LAGGY WHEN RE'STARTING THE ENGINE, ESPECIALLY AT LARGE CROSSINGS W HEAVY TRAFFIC OR ROUNDABOUTS. I HAD ALMOST 5 ACCIDENTS IN THE PAST YEAR BECAUSE YOU ANTICIPATE ONCOMING TRAFFIC AND FROM EXPERIENCE YOU KNOW YOU CAN EASILY TURN OR GO, AND THEN YOU JUST ROLL A BIT AND THERE IS NOTHING HAPPENING AND YOU HAVE NO CHANCE TO DO ANYTHING.

Mileage: 20,000

WHEN START/STOP SYSTEM IS ENABLED, THE ENGINE WILL SHUT OFF WHEN COASTING TO A STOP. IF YOU TRY TO ACCELERATE IT TAKES 2-3 SECONDS FOR THE CAR TO ACCELERATE. THIS IS EXTREMELY DANGEROUS ON LEFT HAND YIELD TURNS WHERE THERE IS ONCOMING TRAFFIC. THIS PROBLEM CAN BE SOLVED BY TURNING OFF THE START/STOP SYSTEMS OR PUTTING THE TRANSMISSION INTO SPORT MODE WHICH WILL AUTOMATICALLY TURN OFF THE START/STOP SYSTEM. IN ADDITION, THE CAR DOES NOT REMEMBER YOUR SETTING WHEN THE CAR IS TURNED OFF. SO EVERYTIME YOU START THE VEHICLE YOU HAVE TO REMEMBER TO TURN OFF THE START/STOP SYSTEMS. AUDI DEALER ASKNOWLDEGED THE ISSUE AND PERFORMED UPDATE, BUT THE ISSUE STILL PERSISTS.

Mileage: 100

THE VEHICLE HAS MAJOR THROTTLE LAG FROM A STOP STATE OF THE CAR, IF YOU ARE NOT AWARE, THE VEHICLE WILL LAG ON ACCELERATION AND SUDDEN JERK FORWARD AT FULL SPEED WHICH IS A MAJOR SAFETY HAZARD IF YOU ARE NOT PAYING ATTENTION. THE TURBOS TAKE TOO LONG TO SEND POWER TO THE WHEELS AND RESULT IS SUDDEN ACCELERATION.

THROTTLE LAG FROM A NEAR (BUT NOT FULL) STOP. IF COMING TO ROLLING STOP, FROM 1-8 MPH, AND THEN HIT ACCELERATOR, THE CAR ENGINE REVS BUT NO ACCELERATION TO VEHICLE. AFTER A 2-3 SECOND DELAY, CAR WILL LUNGE AND ACCELERATE NORMALLY. SCARY WHEN NEED TO ACCELERATE FROM A NEAR ROLLING STOP. LEFT HAND TURNS ESPECIALLY DANGEROUS. EXPLAINED ISSUE TO DEALER, AND Q8 CAR FORUMS HAVE SAME ISSUE. DEALER SAYS FUNCTIONING "NORMAL", WHICH I DISAGREE IT IS NOT. I HAVE TRIED ALL SETTINGS FOR START/STOP, TRANSMISSION SETTINGS, ETC., AND NOTHING FULLY ALLEVIATES THE PROBLEM. THIS IS NOT EPISODIC AND A CONSISTENT, REPRODUCIBLE DANGEROUS ISSUE.

Mileage: 11,000

AUTO START/STOP IS TURNING OFF THE ENGINE AND PUTTING THE CAR IN NEUTRAL BEFORE THE VEHICLE IS COMPLETELY STOPPED. IF YOU NEED TO ACCELERATE SUDDENLY TO CLEAR AN INTERSECTION, IT TAKES A FEW SECONDS FOR IT TO START BACK UP AND MOVE THE VEHICLE. LIKE MOST PEOPLE DO, THE THROTTLE GETS PRESSED HARDER IN THE HOPES OF THE VEHICLE MOVING. BY THE TIME THE VEHICLE STARTS BACK UP I'M 3/4 TO THE FLOOR WITH THE THROTTLE WHICH CAUSES THE VEHICLE TO TAKE OFF LIKE A ROCKET. THIS IS OVERLY AGGRESSIVE START STOP IS DANGEROUS. IT SHOULD OPERATE LIKE OTHER SYSTEMS AND NOT SHUT OFF THE ENGINE UNTIL IT IS AT A COMPLETE STOP. I HAVE TAKEN MY CONCERNS TO MY LOCAL DEALER AND THEY TELL ME THAT IT IS OPERATING AS DESIGNED.

Mileage: 15,000

THERE IS A SIGNIFICANT LAG IN THE POWER TRAIN OF THE AUDI Q8 AFTER BREAKING TO A COASTING SPEED AND THEN ATTEMPTING TO ACCELERATE AGAIN. THE GAS PEDAL IS COMPLETELY UNRESPONSIVE FOR 2-3 SECONDS DURING THIS TIME. DANGEROUS DELAY IN THROTTLE RESPONSE DUE TO AUTO START/STOP OR MILD-HYBRYD SYSTEMS AND CAUSING VEHICLE TO COAST WHEN SLOWING DOWN AT A YIELD SIGN OR INTERSECTION ETC BEFORE TRANSMISSION RE-ENGAGES. THE VEHICLE IS POWERLESS FOR SEVERAL SECONDS DESPITE APPLICATION OF GAS PEDAL, CAUSING ONCOMING TRAFFIC TO POTENTIAL COLLIDE. ALREADY REPORTED TO AUDI SERVICE BUT THEY SAID IT'S NORMAL, WHICH I TOTALLY DISAGREE

Mileage: 2,000

SERIOUS SAFETY ISSUE WITH THROTTLE DELAY FROM DEAD STOP TO GET GOING; DOES NOT HAPPEN ALL THE TIME AND IT IS IMPOSSIBLE TO REPLICATE THE ISSUE; AUDI CLAIMS THEY DO NOT KNOW ANYTHING ABOUT THIS - MULTIPLE PAST COMPLAINTS. I WOULD NOT PURCHASE THIS VEHICLE UNTIL THIS IS RESOLVED. IT WILL KILL SOMEONE. *TR

Mileage: 200

THE VEHICLES AUTO START/STOP FEATURE PUTS THE DRIVER IN COMPROMISING SITUATIONS WHEN POWER IS DEMANDED FROM THE ACCELERATOR AFTER AN ENGINE POWER-DOWN. THE ENGINE DOES IGNITE TIMELY, (AS SOON AS THE BRAKE PEDAL IS RELEASED) BUT THE DELIVERY OF MOVING POWER IS DELAYED (LAG PERIOD) FOLLOWING AN AUTO "SHUT-OFF AND LEAVES THE VEHICLE IN COMPROMISING SITUATIONS WHERE NO POWER CAN BE DEMANDED FROM THE DRIVETRAIN. WHEN THIS DELAY PERIOD (LAG) HAS PASSED, AND POWER IS FINALLY TRANSFERRED TO THE WHEELS, THE VEHICLE EXPELS THE DEMANDED ENERGY FORCEFULLY, JERKING YOU FORWARD. I FIND THIS TO BE A SAFETY CONCERN PARTICULARLY FOR LEFT HAND (YIELD) TURNS WHERE ACCELERATOR RESPONSIVENESS IS CRITICAL BOTH THE PASSENGERS OF THE VEHICLE AND ONCOMING TRAFFIC. AUDI DEALERSHIP CHECKED OPEN CAMPAIGNS, RECALLS BUT "CANNOT REPLICATE" CUSTOMERS CONCERN. THEY DID HOWEVER, TRAIN ME ON HOW TO "DISENGAGE" THE AUTO START/STOP FEATURE, BUT THIS NEEDS TO BE DONE AT EVERY STARTUP. (IF THERE IS NO PROBLEM, WHY DISENGAGE IT?) AUDI EXPERIENCE CENTER (1-800-822-2834) SAYS THEY RELY ON THE JUDGMENT OF THEIR SERVICE CENTERS AND CANNOT PROVIDE FURTHER GUIDANCE. *TR

Mileage: 4,500

AUTO START/STOP FEATURE KILLS ENGINE PRIOR TO VEHICLE BEING COMPLETELY STOPPED RESULTING IN THE DRIVER NOT APPLYING ENOUGH BRAKE "FORCE" TO KEEP THE VEHICLE STATIONARY AFTER THE ENGINE'S RE-IGNITION. WHEN THE ENGINE SUBSEQUENTLY STARTS, THE THE VEHICLE IS JERKED FORWARD AND THE DRIVER NEEDS TO RE-APPLY ADDITIONAL BRAKE FORCE TO THE PEDAL IN ORDER TO KEEP THE VEHICLE STATIONARY. THIS IS A SAFETY CONCERN AS THE DRIVER IS MISLEAD TO HAVE "COMPLETE CONTROL" OF THE VEHICLE WHEN BRINING IT STATIONARY THE FIRST TIME, THEN SUBSEQUENTLY HAVING TO RELY ON "QUICK REFLEXES" TO COUNTERACT VEHICLE BEHAVIOR TO AVOID COLLISION (FROM THE VEHICLE IN FRONT OF YOU, OR FROM INTERSECTING TRAFFIC). AUDIO DEALERSHIP PERFORMED SEARCH OF OPEN CAMPAIGNS & RECALLS. NONE CURRENTLY AVAILABLE FOR THIS MODEL. SERVICE CENTER PAPERWORK INDICATES "COULD NOT REPLICATE CUSTOMERS CONCERN", BUT I WAS PROVIDED EXTENSIVE TRAINING ON HOW TO 'DISENGAGE' THE AUTO START/STOP FEATURE (IF THERE'S NO PROBLEM, WHY DISENGAGE IT?). AUDI CUSTOMER EXPERIENCE (1-800-822-2834) IS UNABLE TO PROVIDE ADDITIONAL GUIDANCE AND RELIES ON THEIR SERVICE CENTERS TO HAVE THE FINAL WORD IN VEHICLE ISSUE RESOLUTION.

Mileage: 4,500

AS REPORTED BY OTHERS, IF THE CAR DOES NOT QUITE COME TO A COMPLETE STOP AND ONE ACCELERATES, THERE IS A SEVERAL SECOND DELAY AS THE ENGINE SEEMS TO BOG DOWN. THIS IS RELATED TO THE AUTO STOP/START SYSTEM AS THIS DELAY DOES NOT HAPPEN IF THE AUTO START STOP IS DISABLED.

Mileage: 3,000

WHEN TRYING TO ACCELERATE FROM A STOP THE CAR EXHIBITS A 3-4 SECOND DELAY BEFORE ACCELERATING. THIS IS A DANGEROUS CONDITION WHEN TURNING INTO TRAFFIC OR WHEN NEEDING TO QUICKLY ACCELERATE AWAY FROM A HAZARD. IT ALSO CREATES TRAFFIC BACKUPS BY DELAYING LIGHT CHANGES FOR VEHICLE BEHIND. THE VEHICLE AS IT CURRENTLY PERFORMS IS A SAFETY RISK.

Mileage: 50

TERRIBLE HESITATION AT STOP SIGN LEADING TO CLOSE CALL. CAR WILL NOT START OFF WITHOUT HESITATION OF 2 OR 3 SECONDS LEAVING DRIVER WITH NO CONTROL. THIS IS A VERY DANGEROUS. SEE GOOGLE COMENTS ABOUT 'Q8 PROBLEMS'

Mileage: 1,000

VEHICLE WILL HAVE A DELAY (1-3 SECONDS) WHEN PRESSING THE GAS PEDAL WHILE THE CAR IS IDLE, CAUSING A DANGEROUS SITUATION AND LEAVING THE VEHICLE VULNERABLE TO CROSS TRAFFIC, AS IT ROLLS FORWARD INTO TRAFFIC. VEHICLE THEN JOLTS FORWARD AS IT FINALLY ENGAGES. HAS CONTINUOUSLY HAPPENED SINCE PURCHASING THE VEHICLE. WE HAVE REPORTED IT ON MULTIPLE OCCASIONS TO OUR DEALERSHIP, YET THEY BASICALLY SAY THERE IS NOTHING THEY CAN DO OR GIVE US THE RUN AROUND. THEIR SOLUTION WAS TO TURN OFF THE AUTO STOP FEATURE, WHICH SEEMED TO WORK AT FIRST, BUT NOW THE VEHICLE IS EXHIBITING THE SAME PROBLEM, EVEN WITH THE AUTO STOP DISABLED. THINK IT HAS TO DO SOMETHING WITH THEIR NEW MILD-HYBRID SYSTEM. IT IS NOT WORKING THE WAY IT WAS INTENDED. PLEASE LOOK INTO THIS MATTER BEFORE BEFORE A SERIOUS INJURY OCCURS.

THIS VEHICLE AS A SERIOUS INTERMITTENT ISSUE WITH THROTTLE LAG. WHEN PULLING OUT OF PARKING LOTS IF YOU DO NOT COME TO A COMPLETE STOP THE THROTTLE SEEMS TO LAG 1-3 SECONDS. THEN IT SURGES FORWARD WHEN IT FINALLY DOES MOVE. AS OTHERS HAVE SAID IT DOES NOT HAPPEN 100% OF THE TIME WHICH MAKES IT EVEN WORSE. YOU NEVER KNOW IF IT'S GOING TO GO OR WAIT A SECOND OR TWO BEFORE IT MOVES. BEING IN SPORT MODE DOES HELP BUT WHO CAN REMEMBER TO ENGAGE THAT EVERY TIME YOU START THE CAR. I HAVE HAD SEVERAL CLOSE CALLS DUE TO THIS ISSUE. I REFUSE TO LET MY DAUGHTER DRIVE THE CAR BECAUSE OF THIS ISSUE. I'VE DISCUSSED IT WITH THE DEALER BUT THEY HAVE NO FIX OR ACKNOWLEDGMENT OF THE ISSUE.

Mileage: 20,000

ON MULTIPLE OCCASIONS, Q8 WILL NOT ACCELERATE WHEN GAS PEDAL APPLIED FOR ROUGHLY 1-3 SECONDS WHEN COASTING TO A STOP OR IMMEDIATELY COMING OUT OF A STOP, CAUSING THE VEHICLE TO REMAIN STATIONARY ALTHOUGH GAS PEDAL IS APPLIED. ONCE THE VEHICLE RESPONDS TO THE DEPRESSED ACCELERATOR, AFTER A DELAY, THEN THE AUTO CAN ACCELERATE BEYOND THE REQUESTED ACCELERATION. IT FEELS LIKE THE VEHICLE IS TRYING TO DECIDE WHETHER OR NOT TO RESPOND TO THE DEPRESSED ACCELERATOR, LEAVING THE VEHICLE VULNERABLE IF TRYING TO CROSS TRAFFIC, ACCELERATE FROM A STOP SIGN, OR TURN LEFT BETWEEN ONCOMING TRAFFIC. THE PROBLEM FEELS INTERMITTENT ALTHOUGH IT FEELS LIKE ITS BECOMING MORE COMMON. VEHICLE RESPONDS THIS WAY WHETHER OR NOT THE AUTO STOP FEATURE IS ENGAGED OR NOT.

Mileage: 5,900

THE CAR HAS A SEVERAL SECOND DELAY WHEN PRESSING THE GAS PEDAL IN THE ENGINE IDLE AUTO ON/OFF FEATURE. I HAVE NOT HEARD OF ANY RECALLS OR FIXES TO THIS PROBLEM. DEALER HAS NO FIX FOR PROBLEM.

ON NUMEROUS OCCASIONS VEHICLE ENTERS AN INTERSECTION OR CROSS TRAFFIC WHILE STARTING A TURN AND ACCELERATION LAGS FOR A 1-3 SECONDS. WHEN APPLYING MORE AND MORE GAS PEDAL, IT EVENTUALLY WILL ENGAGE ALMOST CATAPULTING YOU. HAVE COME VERY CLOSE TO GETTING HIT IN THE SIDE OF THE VEHICLE DUE TO THE LACK OF ANY RESPONSE FOR ACCELERATION. CLEARLY THERE IS A MECHANICAL FLAW IN THE WAY THE VEHICLE OPERATES AND IT LEAVES THE DRIVER AND PASSENGER AT GREAT RISK OF INJURY BECAUSE YOU CAN NOT GET OUT OF THE WAY. SEEMS AS IF THE TRANSMISSION IS NOT DOWNSHIFTING TO FIRST GEAR AND BY STAYING IN 3RD GEAR OR MORE, IT CAN NOT RESPOND TO THE ACCELERATION. IT DOES NOT DOWNSHIFT FAST ENOUGH TO ALLEVIATE THE LAG. AFTER RESEARCHING THE PROBLEM ONLINE, THIS APPEARS TO BE A KNOWN PROBLEM BY THE DRIVERS OF THIS VEHICLE BUT NO MANUFACTURER RECOGNITION OF THE SAFETY HAZARD; OBVIOUSLY TRYING TO AVOID LIABILITY. PLEASE INVESTIGATE BEFORE SOMEONE GETS INJURED (IF THEY HAVEN'T ALREADY).

Mileage: 12,000

THIS VEHICLE HAS INCONSISTENT ACCELERATION THAT IS DANGEROUS. WHEN ACCELERATING, PARTICULARLY FROM A ROLLING STOP OR SLOW SPEED BELOW 10MPH, THERE WILL BE A DELAY IN ACCELERATION. WHEN THE ENGINE DOES ENGAGE IT TAKES OFF 'LIKE A ROCKET'. IT DOES NOT ALWAYS DO THIS, WHICH MAKES IT SO DANGEROUS. HOWEVER, IT HAS BEEN HAPPENING INCONSISTENTLY FOR 9 MONTHS AND MORE THAN 20,000 MILES AND IT CONTINUES.

Mileage: 500

THERE IS A HUGE (SEVERAL SECONDS) AND DANGEROUS LAG WHEN THE CAR SLOWS DOWN TO THE POINT THE START/STOP SYSTEM KICKS IN (AND STOPS THE ENGINE) AND ACCELERATION IS IMMEDIATELY NEEDED (E.G. THE CARD DOES NOT COME TO A COMPLETE STOP.) IN THAT SITUATION, PRESSING THE ACCELERATOR WILL RESULT IN THE ENGINE STARTING AGAIN IMMEDIATELY (AS IT IS SUPPOSED TO) BUT THE CARD WILL NOT ACCELERATE AT ALL NO EFFECT FOR UP TO 3 SECONDS AND THEN IT WILL SUDDENLY START MOVING TOO FAST WITH A JOLT (DEPENDING ON HOW HARD YOU WERE PRESSING THE ACCELERATOR) THIS SITUATION HAPPENS VERY FREQUENTLY (DAILY FOR ME), INCLUDING IN THE CONTEXT OF LEFT TURNS WHERE CARS ARE COMING IN THE OPPOSITE DIRECTION, MAKING IT A SEVERE SECURITY ISSUE. THIS PROBLEM IS NOT CAUSED BY TURBO LAG. IT IS MOST LIKELY CAUSED BY THE SOFTWARE FAILING TO DOWNSHIFT BECAUSE IT BELIEVES THE CAR IS COASTING. THIS ISSUE IS NOT ISOLATED AND HAS BEEN REPORTED BY PLENTY OF OTHER AUDI Q8 USERS. THERE IS A LONG THREAD ONLINE DISCUSSING IT: HTTPS://WWW.AUDIWORLD.COM/FORUMS/AUDI-Q8-227/INTRO-AUTO-START-MAJOR-THROTTLE-LAG-ISSUE-2966888/PAGE2/

Mileage: 10

THERE IS A SIGNIFICANT LAG IN THE POWER TRAIN OF THE Q8 AFTER BREAKING TO A COASTING SPEED AND THEN ATTEMPTING TO ACCELERATE AGAIN. THE GAS PEDAL IS COMPLETELY UNRESPONSIVE FOR 3-4 SECONDS DURING THIS TIME. THIS POSES A MAJOR SAFETY HAZARD IN SITUATIONS WHERE YOU ARE COASTING WITH THE EXPECTATION TO CROSS ONCOMING TRAFFIC. I HAVE EXPERIENCED THE ISSUE IN COMFORT MODE. SIMPLY APPLY THE BREAK IN ORDER TO SLOW THE VEHICLE DOWN WITHOUT COMPLETELY STOPPING. WHEN YOU ATTEMPT TO ACCELERATE, THE GAS PEDAL DOES NOTHING. AFTER THE LAG PERIOD, THE VEHICLE BEGINS TO ACCELERATE. I HAVE NOT BEEN ABLE TO REPRODUCE THIS PROBLEM IF I COME TO A COMPLETE STOP AND THEN PROCEED. I RAISED THIS AS A CONCERN TO MY LOCAL AUDI DEALER BUT WAS ADVISED THAT THERE ARE NO SERVICE BULLETINS REGARDING THIS PROBLEM. MY SOFTWARE WAS UPDATED TO THE LATEST VERSION DURING A RECENT SERVICE APPOINTMENT, HOWEVER, THE PROBLEM PERSISTS.

DANGEROUS LAG/PAUSE IN THROTTLE RESPONSE WHEN ACCELERATION IS NEEDED. WHEN COMING TO A ROLLING OR ALMOST COMPLETE STOP, THE AUTO START/STOP SYSTEM IS ENABLED. IF I GO TO TURN/ACCELERATE THERE CAN BE SEVERAL SECONDS OF TIME LAG BETWEEN PRESSING ON THE ACCELERATOR AND ANY THROTTLE RESPONSE. IT IS DANGEROUS AT TIMES WHEN PULLING ONTO A STREET AND THE CAR WILL NOT RESPOND AFTER A FEW SECONDS. ADDITIONAL THROTTLE PRESSURE DOES NOT INDUCE A THROTTLE RESPONSE, AND SUDDENLY THE CAR WILL SURGE AHEAD. THIS IS NOT AN ISOLATED INCIDENT AND AND SEEMS RELATED TO TRANSMISSION PROGRAMMING WHEN THE AUTO STOP/START SYSTEM IS ENGAGED, WHICH IT IS BY DEFAULT. THE DEALER SAYS THE CAR IS WORKING AS DESIGNED. THIS IS DANGEROUS WHEN MAKING CROSS-TRAFFIC LEFT TURNS BECAUSE OF THE UNPREDICTABLE DELAY. THE DATE NOTED BELOW IS JUST TODAY'S DATE, SINCE THIS SITUATION MAY (AND DOES) OCCUR)ANYTIME UNDER THE SPECIFIED CIRCUMSTANCES/CONDITIONS.

Mileage: 4,000

THERE IS A NOTICEABLE THROTTLE LAG (HESITATION) WHEN THE AUTO START/STOP FEATURE IS ENABLED, AND THE CAR COMES OUT OF A ROLLING STOP (EX. WHEN MAKING A LEFT TURN). DISABLING THE AUTO START/STOP FEATURE OR SELECTING SPORT MODE NEGATES THE ISSUE.

Mileage: 11

THERE CAN BE A PROFOUND LAG IN ACCELERATION AT CRITICAL TIMES. I CAN COME TO AN INTERSECTION AND SLOW. WHEN THE GAP IS SAFE TO TURN WITH TRAFFIC OR ACROSS TRAFFIC THE CAR WILL NOT PICK UP AND GO. IT WILL LAG AND NOT ACCELERATE. I WILL COAST INTO THE INTERSECTION AND I FEEL AS IF I COULD BE BROADSIDED. THE LAG IS ABOUT 3-4 SECONDS. NOTHING....JUST A DEAD ROLL. IT WILL PICK UP AND ACCELERATE AT 3-4 SECONDS. I FEEL THAT THE GAP I WAITED FOR WAS TYPICALLY SAFE FOR OTHER VEHICLES I HAVE DRIVEN. IT IS NOT TURBO LAG....I OWN PLENTY OF DIESELS. IT IS DANGEROUS. IT CAN'T BE PREDICTED. IT CANNOT BE PREDICTED. THIS NEEDS TO BE INVESTIGATED BY YOU. AUDI SAYS THAT THE PROBLEM DOES NOT EXIST. THEY ARE UNABLE TO REPLICATE. THEY STATE THE VEHICLE OPERATES AS DESIGNED. BUT IT KEEPS HAPPENING AND CANNOT BE PREDICTED.

Mileage: 2,000

MY GORGEOUS NEW AUDI Q8 HAS A DANGEROUS HESITATION ISSUE WHEN ACCELERATION FROM A FULL START WITH AUTO START/STOP ENABLED. THE ISSUE IS DESCRIBED THOROUGHLY IN THE ARTICLE @ HTTPS://TECHCRUNCH.COM/2019/06/10/REVIEW-THE-STUNNING-2019-AUDI-Q8-HAS-A-DEAL-BREAKING-FLAW/. ACCELERATOR RESPONSE IS VERY INCONSISTENT SUCH THAT YOU CAN'T COUNT ON THE CAR ACCELERATING IN A CONSISTENT MANNER. IT EITHER HESITATES OR SURGES FORWARD. TURNING AUTO START/STOP DOES IMPROVE PERFORMANCE, BUT ONE MUST REMEMBER TO TURN IT OFF EVERY TIME YOU START THE VEHICLE. I GOT MY Q8 2 MONTHS AGO. I TRIED TO LEARN HOW TO PREDICT ACCELERATION FROM A STANDSTILL, BUT GAVE UP AFTER ALMOST GETTING INTO AN ACCIDENT WHILE CHANGING LANES AROUND A CAR AT A RED LIGHT. I TOOK IT TO THE DEALER WHO SAYS AUDI HAS NOT ISSUED ANY SERVICE BULLETINS TO RESOLVE THIS ISSUE AND THE PROBLEM WAS NOT HAPPENING AT THE TIME OF THIS TEST DRIVE.

Mileage: 50

EXCESSIVE AND DANGEROUS DELAY IN THROTTLE RESPONSE DUE TO AUTO START/STOP SYSTEM CAUSING VEHICLE TO COAST WHEN SLOWING DOWN AT A YIELD SIGN OR INTERSECTION ETC BEFORE TRANSMISSION RE-ENGAGES. THE VEHICLE IS POWERLESS FOR SEVERAL SECONDS DESPITE APPLICATION OF GAS PEDAL, CAUSING ONCOMING TRAFFIC TO POTENTIAL COLLIDE WITH "STALLED" Q8. THIS IS A MAJOR DESIGN DEFECT IN THE AUTO START/STOP SYSTEM AND OCCURS EVERY TIME THE SYSTEM IS ACTIVE.

THE AUTO STOP/START SYSTEM ON THE AUDI Q8 PRESENTS A DANGEROUS SITUATION WHEN A DRIVER ATTEMPTS TO ACCELERATE FROM A COMPLETE STOP. FREQUENTLY, WHEN I DO THIS (WITH THE AUTO STOP/START ENGAGED - IT'S DEFAULT SETTING) THE CAR WILL NOT MOVE FOR APPROXIMATELY 2-4 SECONDS. WHEN IT DOES ENGAGE, IT FINALLY DOES SO WITH EXCESSIVE FORCE. THIS IS PARTICULARLY DANGEROUS WHEN TAKING A LEFT HAND TURN EITHER ACROSS A LANE OF TRAFFIC OR TAKING A LEFT TURN ONTO A ROAD. FOR THE DRIVER, IT'S VERY DISCONCERTING AS (1) YOU DON'T GET THE POWER WHEN YOU WANT OR NEED IT AND (2) WHEN THE POWER FINALLY DOES COME, IT'S EXCESSIVE AND IF YOU MAY NEED TO SLAM THE BRAKES ON TO AVOID TRAFFIC THAT YOU WERE NOT EXPECTING TO BE CLOSE WHEN YOU FIRST BEGAN THE TURN. THIS HAPPENS REPEATEDLY. IF THE AUTO STOP/START SYSTEM IS DISENGAGED, THEN THIS BEHAVIOR GOES AWAY AND THE CAR OPERATES AS EXPECTED. HOWEVER IT RELIES ON THE DRIVER TO REMEMBER TO DISABLE THE "FEATURE" EACH AND EVERY TIME. FOR SOMEONE LIKE MY WIFE, WHO WILL USE THE CAR A FEW TIMES EACH YEAR (WHEN HER CAR IS UNAVAILABLE), SHE MAY NOT BE AWARE (OR I MAY FORGET TO TELL HER) HOW TO ADJUST THE CAR. SAME WITH ANYONE ELSE WHO MIGHT DRIVE THE CAR.

Mileage: 200