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Engine & cooling

2015 Audi A4 Engine problems

Owners have filed 20 complaints about the 2015 Audi A4's engine & cooling with NHTSA - 45% of all its complaints, most recently on July 15, 2026. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Complaints
20
Recalls
0
Crashes
0
Fires
0
Injuries
0
Deaths
0

Engine complaints

Engine & cooling

Oil consumption is extremely high this vehicle burns way to much oil in short amount of time. Oil has to be added every 300 to 400 miles and there are no leaks present

Filed Incident EngineNHTSA 11750557
Engine & cooling

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.

Filed Incident Engine and engine coolingNHTSA 11703017
Engine & coolingFuel system

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

Filed Incident Engine · Fuel / propulsion systemNHTSA 11643290
Engine & cooling

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

Filed Incident EngineNHTSA 11643289
Engine & cooling

No 3 cylinder piston ring failure .Loss of compression.

Filed Incident EngineNHTSA 11629116
Engine & cooling

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.

Filed Incident EngineNHTSA 11579965
Engine & cooling

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.

Filed Incident EngineNHTSA 11467486
Transmission & drivetrainEngine & cooling

The engine failed while I was driving. The car did not show any warning lamps, messages or other symptoms, it just jumped and died. I had the car towed to my mechanic. The mechanic thought it was the starter, but then realized the chain had broken and it hit other parts of the engine, including the pistons catastrophically. The engine is not reparable. My safety was a risk as the car died on a busy road. Audi has asked that I bring the car, at my expense for them to inspect, without offering anything. I have a letter from them indicating that they will not help. ABS SYSTEM and Brake Actuator that is failing or defective. Vehicle was taken to the dealer but was not repaired.

Filed Incident Power train · EngineNHTSA 11447143
Engine & cooling

Excessive oil consumption

Filed Incident EngineNHTSA 11440802
Engine & cooling

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...

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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.

Filed Incident EngineNHTSA 11300976
Engine & cooling

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.

Filed Incident EngineNHTSA 11289275
Engine & cooling

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

Filed Incident EngineNHTSA 11204614
Engine & cooling

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...

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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?

Filed Incident EngineNHTSA 11176209
Engine & cooling

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.

Filed Incident Engine and engine coolingNHTSA 11132969
Electrical systemEngine & cooling

I have yet to receive a remedy to fix my vehicle which I am told can catch fire. The recall is 19n4, can you please follow up on this and let me know if there is a remedy.

Filed Incident Electrical system · EngineNHTSA 11131738
Electrical systemEngine & cooling

I just bought the car from leasing it in may 2018.They did a inspection at audi and about 3 weeks later the engine got stuck and car smoked from hood.These a4 have excessive oil consumption which can damage engine.But audi sells vehicles with faulty engines and says its normal......But no it is not.They sell unsuspecting consumers vehicles with faulty engines....I got stranded on highway in heavily smoking vehicle...What is now useless.I was terrified

Filed Incident Electrical system · EngineNHTSA 11128767
Engine & cooling

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.

Filed Incident EngineNHTSA 11104252
Engine & cooling

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.

Filed Incident Engine and engine coolingNHTSA 11102573
Engine & coolingFuel system

ENGINE

Filed Incident Engine · Fuel / propulsion systemNHTSA 11084330
Engine & coolingElectrical systemDriver assistance

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...

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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

Filed Incident Engine and engine cooling · Electrical system · Back over preventionNHTSA 11005362

Audi A4 engine complaints by year

A4 engine problems, every year

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Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data

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