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Engine & cooling

2014 Audi A8 Engine problems

Owners have filed 12 complaints about the 2014 Audi A8's engine & cooling with NHTSA - 67% of all its complaints, most recently on July 28, 2025. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Complaints
12
Recalls
1
Crashes
0
Fires
0
Injuries
0
Deaths
0

Engine recalls for the 2014 Audi A8

Engine and engine cooling: turbo / supercharger

22V17800026,093 vehicles affected

The problem
Volkswagen Group of America, Inc. (Audi) is recalling certain 2013-2017 A8, S6 Sedan, S7, S8, and 2014-2017 RS7 vehicles. The turbocharger oil supply strainer can become blocked, causing wear to the bearings due to lack of lubrication.
The risk
Worn bearings can cause the turbine wheel to contact the turbocharger housing or cause the shaft to break, causing an engine stall and increasing the risk of a crash.
The fix
Dealers will replace the oil strainer and perform an oil change, free of charge. Owner notification letters were mailed August 4, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 21H7.

Engine complaints

Engine & coolingFuel system

Car went dead on the hwy without any warning. Dealer has the vehicle for a month now and says there is metal shavings in fuel and need more than 15000/- in repairs to replace fuel pump, 6 fuel injectors fuel line and fuel rail. Metal shavings come from fuel pump Failure there should be micro filters in line to stop them from entering the fuel line and injector with sudden death.

Filed Incident Engine · Fuel / propulsion systemNHTSA 11676666
Engine & cooling

I was driving along on the highway, at normal speeds. When my engine started surging, causing me to speed up and slow down rapidly. Putting the safety of others behind and in front of me in danger. No check engine or any light of that nature turned on. then after another mile or so my engine sputtered then just died. I had to pull to the left side of the road since there way a semi truck to my right and it was rush hour here on [[redacted]] in Denver, CO. I don't know what the issue was but I was worried if the...

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people behind me could easily get out from behind me as I almost caused a rear end collision. I'm taking my A8 into the mechanic this coming Monday to find out exactly what was wrong. But engines shouldn't just die out on you on the highway. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Incident EngineNHTSA 11618250
Engine & coolingFuel system

The oil strainer needs to be replaced in my car. This is a known issue with Audi and there are many recalls on Audis, with the exception of mine. I read that this can lead to the engine stopping and causing an accident and it can ruin the engine. This has been problem has been reported to me by an independent service center.

Filed Incident Engine · Fuel / propulsion systemNHTSA 11515815
SteeringEngine & cooling

Turbos failed. Was traveling home on a highway, when i pulled off the engine suddenly stalls out and loss of steering occurs as the engine system automatically puts you in park. Switching to neutral leads to a very 'leaden'/heavy driving feeling (Kind of like with no Power steering, but a little better). Able to get it restarted again with some effort. Car will stall out at any point in time when RPM is 1200 or less (you have about .25s to get it back out of that range or it stalls again). Power is sluggish. To...

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avoid stalls, shifts must be rapid and neutral-shift+gas needs to be applied to prevent RPM from being below 1200. Made it home safely, but had it towed to dealership. Dealership notified me that it was a turbo failure, both impellers have become lodged in the side of turbo casing and are stalled out. Nothing preceded this; no engine lights or anything. Effect was sudden and drastic. Temperatures were fine. Attempt to drive to repair shop led to total loss of coolant. It is believed this is a seperate issue.

Filed Incident Steering · EngineNHTSA 11450995
Engine & cooling

My Audi Certified Preowned A8L, 4.0 TFSI suffered a complete turbocharger failure without any notice. The car went into service 9/30/2013. I purchased the car from the same dealer that originally sold the car in Stratham, New Hampshire on 12/26/2016. I purchased an extended warranty from the dealership for 8 years, 100,000 miles. Thus, the extended warranty expired on 9/30/2021. Car has always been serviced by this Audi Stratham Dealership. During a routine trip, car stalled, went into neutral upon entering a...

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stoplight/intersection and would not re-start. Had to be towed. No modifications ever made to this vehicle. Recently had 75,000 mile service interval completed by Audi. Car now has 81,000 miles. Audi Technical Service Bulletin [21 Engine difficult to start, turbocharger damaged, V8 4.0TFSI 21 17 27 2044640/2 November 21, 2017. Supersedes Technical Service Bulletin Group 21 number 17-24 dated February 2, 2017] describes this problem. Audi refuses to cover the ~$9,000 repair.

Filed Incident EngineNHTSA 11439959
Engine & coolingFuel system

For technician report, go to: https://getpe.co/4ZT0j2 While driving on a major central NJ highway, slowing to exit, the vehicle shuddered and stalled in lane. The engine EPC light came on and a message to put the car in park to start the engine followed. This made it impossible to move the car off the road. It was necessary to stand behind the vehicle and wave traffic around. A passerby was able to get the car started and moved it off the exit and to a service road shoulder. The car shuddered and died again....

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Traffic was heavy and the situation was quite dangerous. The car was taken to the dealer. The turbocharger impeller shaft and fins were damage. Please see above link. Also, please see Audi Technical Bulletin 2044640. This is not a unique event.

Filed Incident Engine · Fuel / propulsion systemNHTSA 11418884
Engine & cooling

Driving on extended highway - a few hours - and complete engine failure at an exit. Unsafe as the engine died in the middle of the road. Took multiple attempts to move the vehicle. Blocked traffic and had to have police assist with the physical pushing of the vehicle to a safe place. Already expended $700 plus on towing to an Audi dealer. Turbo failure which I have now learned is very common on this vehicle. Likely failure point is a oil screen, which Audi has known about for probably a decade. ...

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Incredible that such a safety issue has not been resolved. Estimate for the repair is $11,000. Vehicle has been perfectly maintained and only 72,000 miles - mostly highway. This is clearly a safety issue that Audi has failed to proactively address. I understand that the oil screen has been redesigned - whether it solves the problem is an open question.

Filed Incident EngineNHTSA 11418437
Engine & cooling

While driving and getting off a highway exit the vehicle without notice started to stall as if misfiring and running erratic without no engine trouble codes or warning lights at a red light stop. I managed to get home about half mile and once parked couldn't turn the vehicle on. It only cranked and when it did turn on it would shake idle erratic and then turn off. Towed it to the dealer few days later and was told needed 2 new turbos at a cost of $12k. Asked how is that possible and was told they get starved of...

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oil and eventually fail. Thereafter did some research and realized there are countless other in the audi forums with same issues on the audi v8 4.0T engine. There are tsb's from audi addressing how to fix this problem that it's a small oil strainer problem that gets clogged and starves the turbos and prematurely fail. Audi revised this strainer part it seems but never warned or advised any audi owners with these engines so it can be changed before it's to late. I know have 2 bad turbos because of this faulty design which creates this major expensive problem for a faulty part that's $20. There should be a recall on this part before it's to late and more damage occurs to other audi owners with similar engines.

Filed Incident EngineNHTSA 11324908
Engine & cooling

The car engine stalled while driving on the highway, the vehicle wouldn't restart. Had to call tow truck to take it to the dealership. Both turbos had mechanical malfunction and had to be replaced. *Tr

Filed Incident EngineNHTSA 11324163
Engine & cooling

The 4.0T engine starts to have turbo coolant leak and pcv valve leak at around 48000 miles. The coolant leak could cause turbo failure and the check engine light is on. Cannot have full power.

Filed Incident EngineNHTSA 11307448
Engine & cooling

I was driving my car and had just crossed a track, when out of no where with no warning my car stopped. My wheel started tightening and I couldn't press on the brakes. Thanks goodness I didnt have a car behind me because the car just lost all power. I couldn't even steer the car to the side of the road. Try to restart the vehicle because I was dumb minded to what was going on, but the car would not restart. I had to call a wrecker to come get me and the car. Now picture me, a woman alone, in the road at10:30 at...

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night, waiting for a wrecker to come get my beautiful, luxury car with just 69,000 miles and regular maintenance up keep. I towed the car to an audi dealership to find out that the turbos went out on the car and warranty want cover this $11,071 bill. Purchased this car at 39,000 miles and paid a pretty penny, still owe a pretty penny on this vehicle and now I have to pay this huge repair bill on top of a huge car note. Btw, car still at shop, still not running unless the turbos are replace. This is not even the engine on the car and it cost this expensive.

Filed Incident EngineNHTSA 11279429
Engine & cooling

2014 Audi a8 vehicle has 57534 miles on it, a well maintained vehicle by audi dealerships. When passing a vehicle on a 2 lane hwy the performance seemed to be compromised. Heard a gurgling like sound. The epc light came on. Pulled vehicle over to a safe location and vehicle would not restart. Dealership diagnosed turbo's blown and engine contains metal causing total engine failure. Our concern is if the engine would have seized up when passing another vehicle there is a real possibility that an accident could...

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occur. There are a few technical service bulletins concerning this turbo issue, one in february 2017 and a production solution to the oil supply lines came in may 2018. What about all the vehicles that are out there still on the roads not under warranty and owners have no idea this issue exists? It seems to be a problem with the 4.0L engines. Turbo's. "Audizine" website did a forum poll titled 4.0Tt blown turbo poll. There is also a issue with coolant leakage on the turbo's that can cause damage per technical service bulletin may 2017. I am hoping for a recall before an injury occurs.

Filed Incident EngineNHTSA 11170776

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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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