There are 16 owner-reported engine complaints for the 2015 Audi A4in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2015 Audi A4. The contact stated that when the vehicle was started, the coolant warning light illuminated. The vehicle was turned off and restarted after 20 minutes, and the coolant warning light was no longer illuminated. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 141,177.
Spark plug for damaged due to oil seeping into it. This could lead to overheating of engine or cylinders getting damaged potentially leading to vehicle malfunction when I drive. Audi inspected the part and recommended to reseal the top of the engine. There was a warning for check engine which led to identifying the problem
No 3 cylinder piston ring failure .Loss of compression.
Piston ring defect and blew from over oil consumption. All years from Audi A4 2012-2019 recall law suit but they did not include 2015 which all years and models have same piston ring manufacturer defect it blew on me while I was driving home . Lucky I was in neighborhood and not on highway very unsafe.
The vehicle has an oil consumption issue whereby I top off the oil in about every 400 miles. The dealership indicated that this is a known problem with Audi. The issue first started with warnings that engine is overheating and with further warnings that oil level is low
The engine had catastrophic damage. I was driving, full oil, and the engine just died. The mechanic said the engine was destroyed and believes it was a manufacturing mistake.
Excessive oil consumption
THE CAR BURNS TOO MUCH OIL, NEED TO ADD 1 QUART EVERY 700-1000 MILES. THERE IS NO LEAK BUT THE OIL BURNS AND YOU CAN SEE THE EXHAUST PIPES ARE BLACK. IT SEEMS THIS WAS A PROBLEM IN 2011 4 CYLINDER AUDIS AND IT WAS ADDRESSED BY AUDI.
ISSUE WITH POORLY ENGINEERED WATER PUMP. MY WATER PUMP WENT OUT DUE TO A SMALL PLASTIC SEAL MALFUNCTIONING AND ALLOWING COOLANT TO EXPEL FROM SYSTEM. I AM FORTUNATE I LEARNED OF THE ISSUE UPON STARTING MY CAR AND COULD IMMEDIATELY TAKE CARE OF IT, ALTHOUGH LEAVING WORK AT 9PM, LONG AFTER EVERYONE HAS LEFT AND WITH NO AUTOMOTIVE SHOPS OPEN MADE IT DIFFICULT TO TAKE CARE OF. UPON TALKING WITH AN INDEPENDENT AUDI/VW SPECIALIST AND DOING MY OWN RESEARCH I CAME TO FIND THIS WAS AN INCREDIBLY COMMON PROBLEM. MY CAR HAD ONLY 35K MILES ON IT AND WAS 1 MONTH OUT OF WARRANTY WHEN THIS OCCURRED. THE AUDI/VW SHOP SAYS THEY REPLACE 4-5 OF THESE PUMPS PER WEEK! IT CLEARLY IS A MAJOR ISSUE, ESPECIALLY SINCE A CAR CANNOT FUNCTION AND IS DANGEROUS TO OPERATE WITHOUT THE COOLING SYSTEM. I WAS VERY UPSET THAT THE AUDI BRAND WOULD ALLOW A KNOWN PROBLEM TO CONTINUE, AS IT DOES NOT SEEM LIKE A 'LUCK OF THE DRAW' PART MALFUNCTION.
TL* THE CONTACT OWNS A 2015 AUDI A4. THE CONTACT RECEIVED A RECALL NOTICE FOR NHTSA CAMPAIGN NUMBER: 18V229000 (ENGINE AND ENGINE COOLING) AND STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE DEALER (UNKNOWN DEALER INFORMATION) WAS CONTACTED AND CONFIRMED THAT THE PART WAS 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. THE VIN WAS UNKNOWN.
AUDI SAFETY RECALL 19N4-ELECTRIC (AFTER RUN) COOLANT PUMP. I HAVE BEEN WAITING NOW ABOUT 6 MONTHS FOR A NEW PUMP TO BE AVAILABLE FROM AUDI TO REPLACE THE DEFECTIVE COOLING PUMP, THAT IS TO COOL THE TURBOCHARGER AFTER THE ENGINE IS TURNED OFF. I WAS TOLD, IN WRITING AND OVER THE PHONE BY AUDI, THAT THIS REPLACEMENT WOULD BE DONE BY THE END OF 2018. TODAY WHEN I CALLED AUDI THEY WILL ONLY SAY IT IS TO BE COMPLETED BY THE END OF 2019. NOT HAVING THE AFTER RUN PUMP PROPERLY COOLING THE TURBOCHARGER CAN CAUSE DAMAGE TO THE TURBOCHARGER AND THAT CAN BE VERY COSTLY TO REPAIR. ALSO, IF I WANT TO SELL OR TRADE IN THIS CAR NOW, WITH OUT THE REPLACEMENT PUMP, THE VALUE OF THE CAR IS WORTH LESS AND I WILL LOOSE MONEY DUE TO THIS ISSUE. WHAT CAN BE DONE TO GET THIS PUMP REPLACED AS AUDI SAID THEY WOULD ORIGINALLY?
2015 AUDI A4. CONSUMER WRITES IN REGARDS TO ELECTRIC COOLANT PUMP SAFETY RECALL. *LD THE CONSUMER STATED THE MANUFACTURER EXCEEDED A REASAONABLE AMOUNT OF TIME COMPLETING THE RECALL REPAIR. *JS
RECALL NHTSA: 18V229 SOUNDS CRITICAL AND UNSAFE. AUDI EVEN STATES IN LETTER DO NOT PARK IN GARAGE DUE TO LIABILITY. WILL NOT PAYOFF MY CAR IN ORDER TO OBTAIN A NEW ONE. TRIED TWO DEALERSHIPS AND ALL THEY CARE ABOUT IS MAKING A BUCK. SHOULD AT LEAST PROVIDE A RENTAL TILL REPAIRS ARE MADE OR PAY OFF MY CAR FOR TRADE IN WITH AUDI FINANCIAL.
TL* THE CONTACT OWNS A 2015 AUDI A4. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 18V229000 (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 CONTACT CALLED A LOCAL DEALER (AUDI SALT LAKE CITY, 999 SOUTH STATE STREET, SALT LAKE CITY, UT 84111) AND WAS REFERRED TO THE MANUFACTURER. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE AND DID NOT ASSIST. THE CONTACT WAS DISPLEASED ABOUT STORING THE VEHICLE OUTSIDE AS THERE WAS A RISK OF A VEHICLE FIRE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.
ENGINE
TL* THE CONTACT OWNS A 2015 AUDI A4. APPROXIMATELY ONE WEEK AFTER THE VEHICLE HAD BEEN SERVICED FOR NHTSA CAMPAIGN NUMBER: 17V002000 (ENGINE AND ENGINE COOLING), A FAILURE OCCURRED. WHILE THE CONTACT WAS PARKING THE VEHICLE AT 1 MPH, THE BACKUP SENSOR FAILED AND THE BACKUP WARNING SYSTEM FAILED TO ALERT THE CONTACT OF ANY OBJECTS BEHIND THE VEHICLE. THE VEHICLE WAS TAKEN TO AUDI OF HUNTINGTON (363 E JERICHO TURNPIKE, HUNTINGTON STATION, NY 11746) WHERE IT WAS DIAGNOSED THAT THE SENSOR WIRE HAD BEEN CUT. THE VEHICLE WAS NOT REPAIRED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO STATED THAT THE TWO WIRES WERE NOT CONNECTED AND THAT THE WIRES SEEMED "FRAGILE". THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND STATED THAT THEY BELIEVED THE DEALER'S STATEMENT ABOUT THE WIRE BEING CUT. THE APPROXIMATE FAILURE MILEAGE WAS 24,000. UPDATED 10/17/17*LJ *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026