Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2013 Audi S6 owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2013 Audi S6. The contact stated upon test driving the vehicle after an oil change, the independent mechanic diagnosed that the oil strainer was clogged and the turbine wheel was desegregated. The oil strainer and gasket, the PCV head gasket, and two turbochargers were replaced. Additionally, three consecutive oil changes were completed in order to flush the metal fragments from the turbocharger oil strainer. The vehicle was repaired. The contact later received notification of NHTSA Campaign Number: 22V178000 (Engine And Engine Cooling) which he associated with the failure. The dealer was not notified of the failure. The manufacturer was notified of the failure. The contact submitted a claim for reimbursement as the vehicle had been repaired prior to the safety recall but the manufacturer denied the claim. The failure mileage was approximately 55,000.
Turbocharged failed while driving in afternoon traffic, leaving car stranded at heavy traffic stoplight until tow could be arranged. Failure occurred while idling at the stop light. Failed turbochargers are available for inspection. Failure was initially diagnosed / confirmed by dealership (Audi Chantilly) but due to extreme cost of repair quoted by dealer, car was transported to an independent garage for the repair. Failed turbocharger was inspected at dealership using micro-camera for diagnosis of the problem. There were no warnings, check engine lights, strange noises, loss of power, etc..; failure was total and instantaneous. Additional information: This is a totally stock vehicle, no modifications or tuning performed. It has never been raced or abused. The 'launch mode' built into the car's design (for fast acceleration from stop) has never been used on this vehicle. …
Recently learned that my car broke down on my spouse in an extremely unsafe location due to turbo failure(s) probably caused by the turbo oil inlet screen. She was on a busy street when the car shut off on her putting her in an extremely unsafe situation to move the car and wait for tow truck service. The car is still with the Audi dealership for repairs but has been confirmed that this is the likely incident and fixing it will likely prevent further issues. This car has only been to Audi certified technicians at dealerships for the entire time I've owned the car and I was never notified that this is a common occurrence in these models with the turbo. Numerous online forums are dedicated to discuss the common occurrence when researching this particular issue going back a few years, mostly astounding a recall hasn't been issued. …
Vehicle has had all recommended maintenance performed on schedule at the Audi dealer. Driving down a highway at about 73k miles, engine stopped running with no warning. Electronic systems appeared as though engine was running, but it was dead. We were extremely fortunate that this happened on a rural highway and not the big city freeway system we had recently driven through. Cause of the problem was a total engine failure, later discovered to be failure of the turbocharging system. Checking online reveals that it likely due to a defect in an oil strainer. Sudden catastrophic engine failure at only 73K miles in a dealer-maintained vehicle is a safety hazard, to the occupants of the vehicle as well as to surrounding cars that have to navigate around a suddenly powerless car.
While driving in city traffic, the car went into limp mode with some new lights on the dashboard. Before I could get to a safe place, it completely died and almost caused an accident. I was stuck until I had help pushing the car off the road. Upon reading the OBDII computer codes and then confirming with a professional mechanic, both turbos had blown. There was little warning, and no time to have a safe option once the warning light came on. Upon reading up on this platform, Audi has a defective oil screen that gets clogged and oil starves the turbos which makes them fail prematurely. Hopefully, they will fix this issue moving forward.
Was just driving down the highway at normal speed and my car lost all power, every like came up on the dash and disabled my power steering causing me to almost crash. Took it to the shop mechanic tells me the turbos failed due to oil screen and it will cost me $8,000 Not sure why they failed I have amazing service records on my car. This needs to be a recall.
the 2013 Audi 4.0T generation have a massive issue where the engine start leaking from the bottom of the crankcase where the block connects to it and to fix all these issues audi is asking a rebuild of the entire engine this issue is very common on the 2013 2014 2015 S6 S7 S8 with the 4.0T worldwide problem
The Mfg defrayed some of the cost of replacing the two turbos but I was charged $5,607.06 on the repair on 9/24/20. The cause of the repair was do the mfg defect and they should pay 100% of the repair. The vehicle only had 42,040 miles at the time of the turbo failure.
There have been numerous recalls for my 2013 Audi S6 pertaining to the turbocharged engine. Most recently, over the last 2 weeks I noticed decreasing gas mileage and increasing turbo lag but the car still ran "normally" overall. Then, 1 day ago it made intermittent metallic sounds at startup but then still ran normally. Then, the next day the car had the same startup sounds but then had a rough idle at stoplights. I stopped for gas and the car wouldnt restart at the gas station. It was towed to Audi where the car was diagnosed with catastrophic failure of both turbochargers and quoted approximately $10,000 to fix. Being a 2013 Audi S6 model with 60,000 miles on it, it is outside of Audi's 48 month/50,000 mile warranty. This is known issue for 2013-2016 Audi sedan owners, particularly the 2013 S6. …
Car suddenly had a "rough idle", I.e. Shaking 1-2inches back-and-forth while in idle, after driving for 20 minutes at normal conditions. Shutdown car. Attempted to restart car, but the engine would not turnover the first attempt. Tried again - engine started the second time. No check engine light appeared, so I assumed car was safe to drive. Drove car to dealer for service, and then I noted that the car started making a feint grinding noise when accelerating. Technician noted that both turbochargers had failed, likely due to inadequate oil flow. Car has 60K miles on it, so a catastrophic turbocharger failure this early-on was unexpected and potentially dangerous (car could have stalled due with engine being starved for air), and no check engine light appeared to indicate something was severely wrong with car. …
Related recalls
Engine and engine cooling › Engine › Gasoline › Turbo/supercharger
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.
Remedy: 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.
NHTSA investigations
Engine Stall - Turbo Failure
On March 29, 2021, the Office of Defects Investigation (ODI) opened Preliminary Evaluation (PE) 21-009 after the agency received 58 reports alleging engine stalling in 2013-2016MY Audi vehicle models A8, S6, S7, S8 & RS7. The subject vehicles are equipped with 4.0L, twin-turbocharged engine. Complainants reported that the vehicles stall suddenly with no warning while driving on the highway or in city traffic.
Engine Stall - Turbo Failure
On March 29, 2021, the Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE 21-009) after the agency received 58 reports alleging engine stalling in 2013-2016MY Audi vehicle models A8, S6, S7, S8 & RS7 equipped with the 4.0L, twin-turbocharged engine. Complainants reported the vehicles would stall with no warning while driving at highway or city traffic speeds.
Engine complaints in other S6 years
Frequently asked questions
How common are engine problems on the 2013 Audi S6?
NHTSA has 34 complaints about the engine & cooling of the 2013 Audi S6, 81% of the model year's 42 complaints.
Is there a recall for 2013 Audi S6 engine problems?
Yes — NHTSA recall 22V-178 (turbo/supercharger, Mar 23, 2022). Recall repairs are free at authorized dealers.
At what mileage do 2013 Audi S6 engine problems start?
Half of the complaints with a recorded mileage happened before about 60,000 miles, and 4% before 25,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.