2018 Audi S4 problems and owner complaints

THE TRANSMISSION BEGINS TO JERK AND SLAM CAUSING THE VEHICLE TO ACCELERATE JUST PRIOR TO STOPPING IN STOP/GO TRAFFIC. NOTICED THAT THIS HAPPENS ONLY AFTER DRIVING IN STOP/GO SITUATIONS AND USUALLY AROUND 5MPH. ALSO CLANKS/JERKS WHILE IN REVERSE. DEALER KEEPS SAYING THEY CANNOT REPRODUCE. *TR

Look up ODI 10551886 at NHTSA ↗

THIS ISSUE CONCERNS MY AUDI 2011 S4, A CAR THAT I TOOK DELIVERY ON IN APRIL, 2011. I HAVE HAD NUMEROUS PROBLEMS WITH THE CAR SINCE THE DELIVERY, HOWEVER, IT IS A SAFETY CONCERN THAT HAS CAUSED THIS SPECIFIC FILING. THE PROBLEM SEEMS TO BE WITH THE DSG TRANSMISSION. ON OCCASION, THE CAR WILL STRUGGLE AND "BUCK" IN LOW GEARS AT A VERY SLOW SPEED (OR FROMA COMPLETE STOP) UPON ACCELERATION. THIS DOES NOT HAPPEN OFTEN BUT IT HAS HAPPENED SEVERAL TIMES SINCE TAKING DELIVERY. I HAVE TRIED ADDRESSING THE PROBLEM WITH AUDI CORAL SPRINGS IN THE P…

Look up ODI 10481521 at NHTSA ↗

I OWN A 2012 AUDI S4 WITH A 7 SPEED DSG TRANSMISSION AND NOTICE HARD SHIFTING IN 1-2 AND 2-1 AND ALSO INTO REVERSE AND DRIVE. I HAVE READ ABOUT THIS BEING A MECHTRONICS UNIT OR WHOLE REPLACEMENT OF THE TRANSMISSION CAN BE NEEDED. AFTER BRINGING THE CAR INTO AUDI 4 TIMES WITH THESE ISSUES THEY FINALLY SAID THAT I NEED TO REPLACE THE TCU AND UPDATE SOFTWARE ON THE ECU. I ASKED IF THIS WILL FIX THE ISSUE AND THEY SAID THAT THIS REPAIR WILL BE THE FIRST IN AN ORDER OF PARTS TO BE REPLACED TO HOPEFULLY FIX THE PROBLEM. NEXT WOULD BE THE MECHTRONICS …

Look up ODI 10695462 at NHTSA ↗

THIS VEHICLE IS KNOWN FOR HAVING A FAULTY MECHATRONICS UNIT. THE MECHATRONICS UNIT DOES NOT WORK CORRECTLY, AND CAUSES JERKING AND INSTABILITY TO THE DSG TRANSMISSION. I HAVE ALMOST REAR ENDED OTHER VEHICLES AT RED LIGHTS BECAUSE THE TRANSMISSION WILL JERK FORWARD UNEXPECTEDLY AND LUNGE ME FORWARD TOWARD THE VEHICLE AHEAD. THIS IS NOT ONLY AN ISSUE THAT A PRESTIGIOUS NAME LIKE AUDI SHOULD NOT HAVE, BUT IT IS A HUGE SAFETY ISSUE. AUDI OF AMERICA IS AWARE OF THIS PROBLEM, BUT CHOOSES TO IGNORE IT FOR THE SAKE OF NOT HAVING TO COVER REPAIRS FO…

Look up ODI 10618528 at NHTSA ↗

WHILE DRIVING, A SUDDEN BRAKE FOLLOWED BY A QUICK ACCELERATION LEADS TO BUCKING WITH ACCELERATION AND THE ENGINE REMAINING REVVED UP. WITH BRAKING, THE CAR LUNGES FORWARD. THE ONLY WAY TO CHANGE IT IS BY SHUTTING THE CAR OFF ENTIRELY. HAS OCCURRED AT LEAST 7 TIMES IN PASSED 2.5 YEARS. RESEARCH INDICATES A FAULTY MECHATRONICS UNIT, BUT 2 NY DEALERSHIPS CONTINUE TO STATE NO ISSUE.

Look up ODI 10916285 at NHTSA ↗

WHEN DRIVING IN MANUAL MODE AND TRANSITION FROM ON THE THROTTLE TO OFF-THROTTLE, THERE IS A 1-2 SECOND DELAY BEFORE THE ENGINE STOPS ACCELERATING AND TRANSITIONS TO DECELERATION. ESPECIALLY IN FIRST GEAR, THIS MEANS THAT THE VEHICLE CONTINUES TO ACCELERATE FOR THAT PERIOD OF TIME. I DROVE ANOTHER MODEL OF AUDI WITH THE SAME ENGINE/TRANSMISSION (2018 S5) AND IT EXHIBITS THE SAME BEHAVIOR. SINCE THE CAR DOES NOT HAVE A PHYSICAL THROTTLE CABLE, THIS WOULD SEEM TO BE CAUSED BY THE THROTTLE NOT CLOSING AS COMMANDED BY THE ECU OR THERE BEING A DEL…

Look up ODI 11051028 at NHTSA ↗

PULLED OUT OF PARKING LOT AND RECEIVED A GEARBOX MALFUNCTION WARNING ALONG WITH A TPMS MALFUNCTION. WARNING ON DASH INDICATED THAT I COULD CONTINUE DRIVING. I DROVE VEHICLE FOR APPROXIMATELY ANOTHER MILE AND WHILE GOING THRU A ROUNDABOUT, THE CAR SHUT OFF. I WAS ABLE TO PULL OVER TO THE SIDE OF THE ROAD AND GET THE VEHICLE STARTED AGAIN. I CONTINUED THE REST OF THE WAY HOME FOR ABOUT 2 MORE MILES. THE MECHATRONIC UNIT WAS DETERMINED TO BE FAULTY AND WAS REPLACED. *TR

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AFTER TURNING MY CAR ON A GEARBOX MALFUNCTION WARNING APPEARED BUT SAID I COULD CONTINUE DRIVING. AFTER DRIVING THE MESSAGE AND SERVICE LIGHT EVENTUALLY WENT OFF WITH EVERYTHING GOING BACK TO NORMAL. THE CAR APPEARS TO HAVE A VERY COMMON MECHATRONIC UNIT ISSUE THAT IS PART OF THE FAULTY DSG THAT AUDI HAS PUT IN THE B8 S4 MODEL.

Look up ODI 10767556 at NHTSA ↗

I HAVE A COMPLAINT AUDI S4 AND OTHER AUDI CARS HAVE THE SAME ISSUE AS I'M HAVING YOU CAN BE DRIVING ON THE MAIN ROAD OR ON THE HIGHWAY AND ALL OF A SUDDEN THE CAR LOSES POWER AND EXCELLERATION . I FOUND THAT AS A PROBLEM TO THE SAFETY OF ME AND THE OTHER PEOPLE THAT HAVE THE SAME CAR MODEL.

Look up ODI 11044900 at NHTSA ↗

THE VEHICLE WILL NOT START. NOT WITH THE "KEY" OR THE BUTTON STARTER. AUDI SERVICE CLAIMS ITS THE BATTERY BUT WHEN THE ROADSIDE SERVICE SHOWS UP ITS NOT THE BATTERY, SO NOW A TOW TRUCK HAS TO BE CALLED. THIS CAN HAPPEN AT ANYTIME AND ANY PLACE. AUDI DENIES IT IS A COMPUTER ISSUE BUT YET THE VEHICLE COMPLETELY SHUTS DOWN AND NOTHING IS AVAILABLE - ELECTRONICALLY OR MORE IMPORTANTLY MANUALLY. DON'T BE OUT LATE AT NIGHT OR YOU MIGHT BE A VICTIM TO MORE THAN A BROKEN DOWN VEHICLE. BY THE WAY THIS VEHICLE IS LESS THAN ONE MONTH OLD. *TR

Look up ODI 10515323 at NHTSA ↗

MY 2014 AUDI S4 HAS A EPC LIGHT THAT KEEPS TURNING ON WHILE DRIVING THAT CAR. THE EPC LIGHT WILL PUT THE CAR INTO LIMP MODE AND WILL HAVE A ROUGH IDLE AND CAN BARLEY DRIVE. WHEN THAT LIGHT TURNS ON YOU HAVE TO PULL OVER IMMEDIATELY AND RESTART THE CAR TO CONTINUE DRIVING AND IS A COMPLETE SAFETY HAZARD BECAUSE IT WILL HAPPEN WHEN YOU ARE ON THE FREEWAY. THE LIGHT MAINLY TURNS ON WHEN YOU ARE TRYING TO GET UP TO SPEEDS OF THE FLOW OF TRAFFIC. I HAVE TAKEN IT TO THE DEALER MANY TIMES TO GET THIS ISSUE RESOLVED AND THEY KEEP SAYING THERE IS NO ISS…

Look up ODI 11399328 at NHTSA ↗

SOS module. Audi had a service for the known problem internally (Service Action 90T2) then stopped it apparently but many of us still experiencing issues that were not able to get the part corrected. SOS, GPS, Bluetooth, all hands free does not work. 6 months plus of waiting for a $2k part on backorder because many of us having the issue.

Look up ODI 11584272 at NHTSA ↗

The contact owns a 2021 Audi S4. The contact stated that while driving at an undisclosed speed, the vehicle experienced a loss of automotive power. The check engine warning light was illuminated. The message "Drive System Malfunction - Please Contact Service" was displayed. In addition, the vehicle hesitated to restart and shift into gear as intended. The contact stated that the failure had progressed over time. The vehicle was taken to a local dealer, where it was diagnosed with needing a pending software service update; however, the repairs w…

Look up ODI 11689741 at NHTSA ↗

2022 Audi S4- letter from lawyer representing consumer in reference to the Ohio Lemon Law. Consumer is requesting refund of purchase price of vehicle. Purchase agreement and repair invoices attached.

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CONDENSATION BUILD-UP IN HEADLIGHT HOUSING ON VARIOUS AUDI VEHICLES THAT DOES NOT DISSIPATE REGARDLESS OF WEATHER OR DURATION OF HID LIGHTS BEING ON. *TR

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MY VEHICLE HAS INTERMITTENT PROBLEMS WITH THE POWER STEERING FAILURE. THE STEERING WHEEL GOES FROM PRACTICALLY FROZEN TO BEING LOOSE WITHOUT WARNING. THIS CAN CAUSE DRIVING OFF THE ROAD, INTO TRAFFIC, CRASH, ETC. DEALERSHIP, DELTA AUDI, GRAND RAPIDS, MI, CANNOT REPLICATE AND REFUSE TO DRIVE SIMILAR TO THE CONDITIONS IT FAILS, FOR LACK OF STAFF AND RESOURCES. AUDI OF AMERICA AND "STATE REPRESENTATIVE" AND "END OF THE LINE" DECISION MAKER RYAN CONLIN [phone removed], STATES HE WILL OFFER NO FURTHER RESOLVE. HE REFUSES TO PUT IN WRITING EFFOR…

Look up ODI 10435277 at NHTSA ↗

2010 AUDI S4 WATER PUMP FAILURE -- THIS COMPLAINT IS IDENTICAL TO THE PREVIOUS TWO COMPLAINTS SURROUNDING THIS MODEL'S WATER PUMP FAILURE. IT SHOULD BE NOTED THAT A NEAR FULL LOSS OF STEERING DIRECTLY RELATED TO THIS FAILURE OCCURRED AT THE SAME TIME. IN MY CASE THE CAR HAS BEEN REPAIRED, HOWEVER LIKE OTHERS WHO HAVE DETAILED THEIR EXPERIENCES, AUDI HAS NOT ACKNOWLEDGED THIS IS A SYSTEMIC ISSUE FOR THIS MODEL, NOR IS THE REPAIR SATISFACTORY AS THE DISTINCT ODOR OF G-12 (G-30 IN EUROPE) IS PRESENT. THOUGH THIS IS A SAFETY ISSUE FIRST, IT IS …

Look up ODI 10358825 at NHTSA ↗

MY 2013 AUDI S4 EXHIBITS AN ALARMING TENDENCY TO WEAVE FROM SIDE TO SIDE WITHOUT A STEERING INPUT. THIS OCCURS WITHOUT A CHANGE IN STEERING WHEEL POSITION, VEHICLE SPEED, OR CHANGE IN ROAD SURFACE OR PREVAILING WIND DIRECTION. IT IS MORE PRONOUNCED AT HIGHWAY SPEEDS AND WHEN WHEEL IS CENTERED AT 12 O'CLOCK BUT DOES OCCUR AT ALL SPEEDS AND STEERING VECTORS. AUDI DEALERSHIP NOTES THE PROBLEM AND BLAMES THE NEW ELECTRIC STEERING SYSTEM BUT STATES IT IS A "CHARACTERISTIC" OF THE SYSTEM AND IS NOT A DEFECT. I DISAGREE AND FEEL ANY DIRECTION CHAN…

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TL*THE CONTACT OWNS A 2014 AUDI S4. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 40 MPH, THE STEERING WHEEL SEIZED AND THE STOP CAR STEERING SYSTEM DEFAULT WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TOWED TO THE DEALER, WHO DIAGNOSED THAT THE STEERING MODULE NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 5,900.

Look up ODI 10681722 at NHTSA ↗

TL* TAKATA RECALL. THE CONTACT OWNS A 2008 AUDI S4. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBERS: 16V382000 (AIR BAGS) AND 16V079000 (AIR BAGS). THE PARTS TO DO THE RECALL REPAIR WERE UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIRS. THE MANUFACTURER WAS AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

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THE PASSENGER AIRBAG OFF INDICATOR LIGHT IS ON. CHECKED WITH AUDI AND THEY ARE SAYING THE PASSENGER OCCUPANT DETECTION SYSTEM NEEDS TO BE REPLACED. EAXCT SAME ISSUE AS THE AUDI RECALL 74D5

Look up ODI 11164618 at NHTSA ↗

WITHOUT WARNING MY 2010 AUDI S4 OVER HEATED WHILE DRIVING HOME FROM THE STORE ON WEDNESDAY NIGHT. LUCKILY MY CHILDREN WERE NOT WITH ME BECAUSE I HAD TO PULL OFF ON THE SIDE OF A BUSY ROAD UNTIL THE ENGINE COOLED DOWN. FROM WHAT I GATHERED ON THE INTERNET SEVERAL HUNDRED AUDI'S HAD THE SAME ISSUE BUT NO RECALL WAS ISSUED. ONLY A TSB (TECHNICAL SERVICE BULLETIN) WAS ISSUED. AUDI MAKES THE CUSTOMER PAY THE BILL, EVEN THOUGH THEY REPLACED THE PLASTIC THERMOSTAT WITH AN ALUMINUM ONE AND SOMETIMES THE WATER PUMP. BAD CUSTOMER SERVICE IF YOU ASK ME. …

Look up ODI 10639545 at NHTSA ↗

THERE IS A WELL KNOWN ISSUE WITH THE AUDI 3.OT ENGINE'S PLASTIC THERMOSTAT FAILING! I WAS DRIVING AND THE THERMOSTAT FAILED CAUSING THE ENGINE TEMP TO SKYROCKET TO "H"! I DROVE HOME BECAUSE I WAS CLOSE ENOUGH WITH THE HEATER ON HIGH. THEY FLATBEDED MY CAR ON 9/29/14 FROM MY DRIVEWAY TO THE AUDI DEALERSHIP. DEALERSHIP DETERMINED IT WAS A FAILED THERMOSTAT AND REPLACED IT WITH ANOTHER "PLASTIC THEMOSTAT." THE SECOND THERMOSTAT FAILED 2 DAYS LATER. I JUST TOOK THE CAR TO THE AUDI DEALERSHIP AGAIN THIS MORNING 10/3/14 TO HAVE IT REPLACED AGAIN! THI…

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LOST ALL COOLANT DUE TO RADIATOR LEAK FROM ROAD HAZARD DAMAGE CAUSED BY BAD DESIGN OF FRONT LOWER GRILL. IT HAS NO PROTECTIVE MESH AND CLEAR OPENINGS FOR ROCKS TO PROTRUDE. I FOUND THIS ON AUDI FORUM TWO PEOPLE NOW ON THE VAIRIOUS BOARDS HAVE THOUGHT THEY LOST THEIR WATER PUMP, BUT IN FACT HAVE HAD HOLES PUNCHED IN THEIR INTERCOOLING RADIATORS BY ERRANT ROAD DEBRIS WHICH STRIKES THE RADIATOR AT HIGHWAY SPEEDS AND PERFORATES IT. SINCE THE ENGINE AND SUPERCHARGER COOLING SYSTEMS SHARE THE SAME OVERFLOW CONTAINER, BUT ARE SEPERATE LOOPS, IT'S …

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CARBON BUILD UP

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The R&R valve/oil separator unit failed on my 2015 Audi S4 at approximately 71,000 miles. This unit, when fails, can mix the oil and anti-freeze which can seize the engine. I was able to catch the problem before engine failure. Minneapolis Audi repaired the vehicle this week, 1/10/23. There were NO warning indicators except noise. Various media sources have stated that this is a known engine failure concern between 60-90K miles for this engine. Audi does not recognize this as a safety or warranty concern.

Look up ODI 11501592 at NHTSA ↗

WHEN DRIVING IN MANUAL MODE AND TRANSITION FROM ON THE THROTTLE TO OFF-THROTTLE, THERE IS A 1-2 SECOND DELAY BEFORE THE ENGINE STOPS ACCELERATING AND TRANSITIONS TO DECELERATION. ESPECIALLY IN FIRST GEAR, THIS MEANS THAT THE VEHICLE CONTINUES TO ACCELERATE FOR THAT PERIOD OF TIME. I DROVE ANOTHER MODEL OF AUDI WITH THE SAME ENGINE/TRANSMISSION (2018 S5) AND IT EXHIBITS THE SAME BEHAVIOR. SINCE THE CAR DOES NOT HAVE A PHYSICAL THROTTLE CABLE, THIS WOULD SEEM TO BE CAUSED BY THE THROTTLE NOT CLOSING AS COMMANDED BY THE ECU OR THERE BEING A DEL…

Look up ODI 11051028 at NHTSA ↗

I don't know because dealer will not allow me to inspect engine or send me a response to what caused failure. Seems by the sounds coming from the top end of the motor most likely cause is that rocker arm (or possibly a valve train)component failed, noise coming from top end. Of course the failure was just after the 50k warranty by about 17 k miles. So roughly 66-67 k miles. The original estimate was a new long block at approx. 31k cost to me. Eventually after complaining significantly it was settled at 14k plus tax.

Look up ODI 11646713 at NHTSA ↗