2013 Audi A8

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. Several of the complainants alleged an inability to restart. The complaints alleged the major contributing factor to the engine stalling was the failure of the turbochargers. The complaints cited the turbocharger failure was a result of oil starvation due to a clogged oil strainer in the turbocharger oil supply line.The location of the oil strainer in the turbocharger oil supply line is in the inner valley of the engine. It is not easily accessible, making servicing the component difficult. The oil strainer removes particles and carbon deposits from the oil before lubricating the turbochargers. Over time, if the debris is not removed from the oil strainer, it becomes clogged and prevents oil from flowing to the turbochargers. This causes the turbine bushings to run dry and overheat resulting in turbine shaft failure due to thermal stress.On April 04, 2022, PE21-009 was upgraded to an Engineering Analysis (EA22-001) to further assess the scope, frequency, and potential safety related consequences of the alleged defect. Volkswagen filed recall 22V-178 to replace the 30?m mesh oil strainer with a 90?m mesh oil strainer in the subject vehicles. VW introduced the larger mesh oil strainer into production in March of 2017 effecting the 2017-2018MY vehicles.ODI reviewed information from VW for vehicles that had the larger mesh installed in production. The data received showed, since the new oil strainer size of 90?m went into production for the 2017-2018MY, there has not been any reported incidents of turbocharger failures due to oil starvation or other failures that could be related to the larger screen mesh. In view of the recall being conducted by VW and lack of any detrimental side effect to the turbocharger caused by the larger mesh, ODI is closing this Engineering Analysis (EA). The agency reserves the right to take additional action if warranted by future circumstances.11502847,11506565,11494663,11488813,11486393,11480926,11479882,11476289,11466761 11464663,11463254,11460580,11460496,11458973,11458804,11457556,11454753,11452668 11452589,11452584,11452383,11452175,11452111,11451724,11451724,11450995,11450988 11449661,11447092,11443657,11442867,11440536,11440052,11439959,11438691,11436461 11435619,11433925,11433733,11432336,11431661,11431421,11429704,11429584,11428128 11426929,11424203,11423603,11423337,11422431,11421084,11420626,11420342,11419693 11418884,11418437,11418433,11418135,11417635,11417351,11416095,11414578,11414235 11414064,11413359,11413285,11413214,11407510,11407450,11406897,11406821,11406637 11406460,11406416,11406291,11406287,11406277,11406273,11406263,11406256,11406251 11406229,11406222,11406208,11406204,11406197,11406182,11406015,11404665,11404426 11404348,11403823,11403430,11403268,11402684,11399435,11397821,11396241,11394763 11391037

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. Several of the complainants alleged an inability to restart. The complaints allege the major contributing factor to the engine stalling is the failure of the turbochargers. The complaints further allege the turbocharger failure is a result of oil starvation due to a clogged oil strainer.The location of the oil strainer in the turbocharger oil supply line is in the inner valley of the engine. It is not easily accessible, making regular service difficult. The oil strainer removes dirty particles and carbon deposits from the oil before flowing to lubricate the Turbochargers. Overtime if the debris are not removed from the oil strainer, it clogs the strainer and prevents free flow of oil to the turbochargers and makes the turbine bushings to run dry and overheat which causes the turbine shaft to break due to thermal stress. In VW's response to ODI's Information Request letter, VW provided approximately 611 warranty claims with unique VINs, 70 Field Reports and 45 Consumer complaints. These reports allege engine stalling due to turbocharger failure similar to the NHTSA reports described above. To date, NHTSA has received approximately 98 allegations of stall due to turbocharger failures. The total of 824 reports shown in the table above eliminates duplicate reports received by both ODI and the manufacturer.This Preliminary Evaluation is being upgraded to an Engineering Analysis (EA) to further assess the scope, frequency, and potential safety related consequences of the alleged defect of engine stalling due to turbocharger failureThe ODI complaints cited above can be viewed at www.NHTSA.gov under the following ODI identification numbers:11452589, 11452584, 11452383, 11450995, 11450988, 11449661, 11447092, 11442867 11440536, 11440052, 11439959, 11438691, 11436461, 11435619, 11431661, 11429704 11429584, 11426929, 11424203, 11423603, 11423337, 11421084, 11420626, 11420342 11418884, 11418437, 11418433, 11417635, 11417351, 11416095, 11414235, 11413359 11413214, 11413285, 11413133, 11407510, 11407450, 11407289, 11406821, 11406416 11406291, 11406277, 11406273, 11406256, 11406251, 11406229, 11406222, 11406204 11406197, 11406182, 11404665, 11404426, 11404348, 11403430, 11403268, 11399435 11397821, 11396241, 11394763, 11391037, 11388662, 11387166, 11377446, 11363283 11354107, 11344193, 11342497, 11342360, 11340302, 11325065, 11324163, 11322168, 11321144, 11318477, 11306754, 11279429, 11268109, 11256706, 11252723, 11246579 11234853, 11234714, 11231582, 11231013, 11230589, 11229484, 11222281, 11218822 11218749, 11217604, 11209168, 11209142, 11197149, 11191243, 11175842, 11170776 11164032, 11152418.

Lionhart LH-Five UHP All Season 265/40ZR20 104Y XL Passenger Tire The tire tread separated at the inside seam of the tire at the side wall. One tire had 90-180 degree of tire separation. You could see the inside of the tire and the belt. The tire was still holding pressure. This problem was identified before the tire further self destructed. But this is considered a near miss if not discovered at the time and future tire degradation continued. The first event happened in Dec 2024. I have two vehicles that use the same tire. I noticed the same problem on all four tires of my other vehicle currently (October 2026). These tires appear to have a manufacturer defect. The DOT manufacturer date on my current tires is 1124 which I believe means 11th wk of 2024. The tires that had the tread separation had about 20k of use. I have included a picture below. On my other car the tires have about 20k miles of use also, and the location where the sidewall meets the tread on the inside of the tire is very thin and stretched. It is a matter of time before these fail as well. I am seeking to get these replaced by the tire company.

NHTSA ID

11773411

Incident

Oct 24, 2026

Engine totaled because of oil starvation I'm guessing or maybe an oil pump failure oil starvation caused Pistons to rub inside of head cost of engine and work is more than the vehicles cost so that means car is totaled

NHTSA ID

11732258

Incident

Apr 19, 2026

The pcv oil separator has failed and is making a whistling sound. From researching this issue it is widely known and an investigation shows it is caused in relation to a recall for the oil strainer that was done on this vehicle. I called audi dealership and they said this is not an open recall, however it seems this is exactly what caused it.

NHTSA ID

11692779

Incident

Oct 11, 2025

Driving up an inclined road at night. Car engine started to sputter and jerk and lost power. Was able to get to the side of the road out of traffic at the top of the hill? I was able to coast down the hill to a gas station. Carl would not drive without Jerking or accelerate, add check engine, light on and flashing. With the smell of burning from the engine, compartment waited two hours for a tow truck towed it home, the following day, I had to take off of work. I checked all the spark plugs to find multiple spark plugs completely soaked in oil, took an Uber to parts store to buy new spark plugs. At this point I had found out about the recall for the same problem. On the same engine. In all of audi's cars, except for the A8 line was excluded, do not know the reason why it's the same engine in multiple vehicles that were listed in the recall for the piston rings. My other Audi a 6 has over 200000 miles and does not have this issue. Get these low tension piston ring failures that have been recalled. On the issue with all of audi's in this year

NHTSA ID

11667840

Incident

Aug 23, 2024

The contact owns a 2013 Audi A8. The contact stated that while her son was driving at highway speeds, the warning lights on the instrument panel flashed as the vehicle shut off. The contact's son managed to pull over despite the failure. The vehicle was initially towed to one dealer; however, the dealer failed to service the vehicle promptly. The vehicle was then towed to a dealer where it was diagnosed with a defective ECM(Electronic Control Module) that needed to be replaced. The vehicle remained in the dealer's possession for a month before the vehicle was repaired. Despite the repair, the contact was notified that the failure persisted and was then informed that a defective engine cylinder now needed to be replaced. The manufacturer was notified of the failure but offered no assistance. The vehicle remained in the dealer's possession and had yet to be repaired. The failure mileage was approximately 120,000.

NHTSA ID

11625496

Incident

Aug 12, 2024

Mileage

120,000 mi

Audi, A8L 2013, also has the stuck piston. Rings end oil blow by like the other Volkswagen, defected engines of the same year yesterday while driving my car ended up stalling on a road with traffic behind me going up a hill because too much oil I'd burnt in the cylinders, causing the spark plugs to become completely coated in oil and the cars. Electronic system registered multiple misfires, multiple cylinders. Are misfired and multiple other safety epc codes, causing the vehicle to not be able to drive more than 5 miles an hour, stuttering. Which also caused the engine to almost stall, losing power steering. If this was on the highway this could have been exceptionally bad. I request the Audi AH. L and 8 series to be added to the current recall. For the A6Q5A4 A seven with the exact same problem

NHTSA ID

11610338

Incident

Aug 21, 2024

Brake pedal is hard when starting the vehicle. Brake pedal turns soft when engine is started. The brake pedal is so hard that it requires significant force to depress sufficiently to start the engine. This indicates loss of vacuum in brake booster when engine is off. The vehicle is equipped with a start/stop system and it seems likely that the brakes would not sufficiently hold the vehicle when the start/stop system turns off the engine.

NHTSA ID

11590954

Incident

May 22, 2024

Unknown at this moment service vist is next week. The problem is a know piston ring issues on other years of same engine with massive oil consumption 1 qt a week with minimal driving less then 100 miles. Spent 3k on pvc and coolant pump that are a known issue of totaling engine but burning oil non stop and risk or seized engine if on highway

NHTSA ID

11589083

Incident

Jan 1, 2024

This bulletin provides informaiton on the use of the PICO-NVH tool (VAS 611 015).

This bulletin provides information when the engine is not runing smoothly; all gas engines.

This bulletin provides information to aid in diagnosing the vehicle locking system.

This bulletin provides information on VIN plates, Safety Certification labels, and ordering procedures.

This bulletin provides information for reporting safety related information to the manufacturer.

This bulletin states that technicians are required to report to the manufacturer when a vehicle has flooded, and specify the height to which the vehicle has been flooded.