IllustrationSunroof shattered while driving.
2013 Audi A8
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all A8 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
20–25K
325–50K
1250–75K
375–100K
2100–150K
0150K+
22 reports with mileage · 27 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Engine. Review the 36 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel/propulsion System. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports0 fire reports0 injury reports
What owners actually said
49 reportsIn March of 2022, a safety recall number 21H7, was issued for my 2013 Audi A8L regarding the oil strainer which could clog and result in the turbocharger failing and subsequent consequences. I have contacted my Audi dealer numerous times since first receiving written notification with the most recent contact being today October …
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In March of 2022, a safety recall number 21H7, was issued for my 2013 Audi A8L regarding the oil strainer which could clog and result in the turbocharger failing and subsequent consequences. I have contacted my Audi dealer numerous times since first receiving written notification with the most recent contact being today October 31. The dealer says they still don’t have the necessary parts and even though there is still supply chain issues internationally, quite enough time has passed and when I reached out to Audi USA, they said parts have been available since August! I have not had any issues yet in driving the car but still feel reluctant to do so and would like this fixed asap. Thank you.
1. OeM audi windshield started leaking water inside the vehicle. Thia is very unsafe when driving thru rain as water pours down the inside of the glass. 2. Uneven and creaky suspension. Vehivle pulls on side where suspension is not leveling thw vehicle out. 3. Followed all processes in changing brake pads, toros, sensors etc…
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1. OeM audi windshield started leaking water inside the vehicle. Thia is very unsafe when driving thru rain as water pours down the inside of the glass. 2. Uneven and creaky suspension. Vehivle pulls on side where suspension is not leveling thw vehicle out. 3. Followed all processes in changing brake pads, toros, sensors etc. Brake light doesnt go away after replacing all brake components and resetting brake warning light. Very uneasy feeling driving around qithtbhe light on as unsure as to brakes would spontaneously fail.
There is an open recall: 16V619000 Which applies to a set of VIN numbers. This same issue happened on my vehicle and my VIN is not part of the recall. Other VIN numbers should be included in this recall like mine. I had to get the repaired on my own for $2500 because this recall isn’t showing up for my vin number
Manufacturer Recall Number21H7 NHTSA Recall Number22V178 This recall was issued in May 2022. I emailed Audi USA, who advised me that they do not have a repair they can implement to address this recall. This is surprising because, according to an Audi enthusiast website, repairs under this recall are being made in the United …
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Manufacturer Recall Number21H7 NHTSA Recall Number22V178 This recall was issued in May 2022. I emailed Audi USA, who advised me that they do not have a repair they can implement to address this recall. This is surprising because, according to an Audi enthusiast website, repairs under this recall are being made in the United Kingdom. See pdf attached. Why is Audi telling me they cannot repair my car when they seem to be doing just that in other countries? It appears that this is not a complicated repair and seems to involve only replacing a mesh oil strainer.
I was told the recall wasn't yet active, but the dealer had the parts to take care of the recall. Now I am being told I must pay for the recall repair and wait an undetermined amount of time to get reimbursed through the manufacturer. Meanwhile I can not do anything with the vehicle as if I sell it I cannot collect the monies fr…
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I was told the recall wasn't yet active, but the dealer had the parts to take care of the recall. Now I am being told I must pay for the recall repair and wait an undetermined amount of time to get reimbursed through the manufacturer. Meanwhile I can not do anything with the vehicle as if I sell it I cannot collect the monies from which they want me to pay ( over $8000 ). Please advise as this is a lot of money to tie up not knowing when it will be refunded. Thank you, [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
My car don’t get the full power & it whistles they say it’s the oil seperator .
The car has only 60,000 miles and it is gently driven. In the middle of the interstate it started making a rattling noise. Immediately the car ceased to run. Luckily there was no vehicle otherwise it would have been a disaster. I managed to start the car back and bring it to my home which was nearby. I called a friend who is the…
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The car has only 60,000 miles and it is gently driven. In the middle of the interstate it started making a rattling noise. Immediately the car ceased to run. Luckily there was no vehicle otherwise it would have been a disaster. I managed to start the car back and bring it to my home which was nearby. I called a friend who is the mechanic and he mentioned the turbo had failed
I experienced the engine stall/turbo failure as described in NHTSA Action Number PE21009. I have all of the supporting documents regarding this turbo failure. Volkswagen auto group had previously issued a voluntary TSB regarding this known design shortcoming in the turbo system of the 4.0T engine. The oil screens that filter the…
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I experienced the engine stall/turbo failure as described in NHTSA Action Number PE21009. I have all of the supporting documents regarding this turbo failure. Volkswagen auto group had previously issued a voluntary TSB regarding this known design shortcoming in the turbo system of the 4.0T engine. The oil screens that filter the turbo cooling were engineered with a mesh that was too fine. This mesh eventually clogged and severed oil flow to the turbo units, causing failure. There is discussion of this design shortcoming in every single Audi online group, so much so, that when new members join the owners Facebook group, they are nearly all immediately warned to change their oil screens. The concept that I was without a vehicle for months as well as having to pay for this repair out of pocket still shocks me - I had several heated calls with the Audi warranty headquarters and an incident at the dealership that required retraining of the service staff. Needless to say, this turbo failure on my vehicle was an absolute nightmare. I’d be more than happy to share all of my documents and story with the NHTSB. Thank you.
On the afternoon of September 12, 2018, my 2013 Audi A8L 4.0T started with somewhat of a rough idle, but no warning lights or error codes were present on the dashboard. I owned the car for approximately 18 months at that point, and this had never happened before. As soon as I started to drive, the tachometer became steady and …
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On the afternoon of September 12, 2018, my 2013 Audi A8L 4.0T started with somewhat of a rough idle, but no warning lights or error codes were present on the dashboard. I owned the car for approximately 18 months at that point, and this had never happened before. As soon as I started to drive, the tachometer became steady and there were no other indications anything was wrong, even stopping at traffic lights the problem did no persist nor were there any indications anything was wrong. Once back in Spartanburg, the car stalled while slowing down for a traffic light. The engine cut off completely, the steering became very rigid, and the Check Engine light turned on. I was able to coast to a stop and turn on my hazard lights, and then tried to restart the car to no avail. The engine would turn over, but the car would not start. Another car stopped behind me, and we were able to push the car onto the grassy shoulder out of traffic, which was dangerous in itself but safer than sitting in the middle of a busy road. I had the car towed to Steve White Audi in Greenville, SC. Once there, they informed me that the error codes indicated that both turbo's failed simultaneously and the failure of those turbos caused the first set of downstream catalytic converters to fail also. See attached repair report and payment receipt = $10,975.57 for the replacement parts and labor ($12,070.85 including the 115,000 mile service). Once they told me the cost of the repair, I called Volkswagen USA corporate headquarters to ask if there were any pending recalls for the turbos. Multiple message boards and FaceBook pages go into detail about how the turbos are a known point of failure on the 4.0T cars, and the astronomical cost to replace them. I was informed by Volkswagen that there were no pending recalls, and that I would have to pay for the repairs out of pocket, which I did.
Official recalls
622V178000 · Engine And Engine Cooling:engine:gasoline:turbo/supercharger
Mar 23, 2022
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.
Consequence & remedy
Consequence: 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.
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. Audi's number for this recall is 21H7.
20V397000 · Structure:body:hood
Jul 7, 2020
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2018 Audi S8 and A8 vehicles. The seal around the engine compartment may come loose and contact hot engine components.
Consequence & remedy
Consequence: If the seal contacts hot engine components, there could be an increased risk of a fire.
Remedy: Audi will notify owners, and dealers will install a retaining plate to prevent the engine compartment seal from loosening. The recall began September 4, 2020. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 51G6.
19V057000 · Fuel System, Gasoline:delivery:hoses, Lines/piping, And Fittings
Jan 28, 2019
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2016 Audi A8 and S8 vehicles. The fuel supply line for the high pressure fuel pump may become porous and leak fuel.
Consequence & remedy
Consequence: Leaking fuel, in the presence of an ignition source, increases the risk of fire.
Remedy: Audi has notified owners, and dealers will install a fuel pressure damper, free of charge. The recall began February 21, 2019. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 20BM.
18V430000 · Fuel System, Gasoline:delivery:hoses, Lines/piping, And Fittings
Jun 25, 2018
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2015 Audi S8 and A8 vehicles. The fuel supply line for the high pressure fuel pump may become porous over time, resulting in a fuel leak.
Consequence & remedy
Consequence: A fuel leak in the presence of an ignition source can increase the risk of a fire.
Remedy: Audi will notify owners, and dealers will replace the fuel line, free of charge. The recall began July 20, 2018. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 20AV.
16V619000 · Engine And Engine Cooling:engine
Aug 24, 2016
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2010-2013 Audi A8 vehicles manufactured May 15, 2010, to May 14, 2012. The affected vehicles have a coolant valve that may leak, allowing coolant to enter the engine control module causing a loss of power or the engine to stall.
Consequence & remedy
Consequence: A vehicle stall increases the risk of a crash.
Remedy: Audi will notify owners, and dealers will replace the coolant valve and inspect for coolant that has leaked through the electrical connector, free of charge. The recall is expected to begin October 19, 2016. Owners may contact Audi customer service at 1-800-253-2834.
13V448000 · Visibility:sun/moon Roof Assembly
Sep 23, 2013
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2013-2014 Audi A8 and S8 vehicles equipped with a standard sunroof, manufactured March 12, 2013, through July 15, 2013. These vehicles are equipped with a standard sunroof glass panel that may shatter.
Consequence & remedy
Consequence: Should the sunroof's glass break while the vehicle is in use, the falling glass could injure the driver or passengers. It could also distract the driver, increasing the risk of a crash.
Remedy: Volkswagen will notify owners, and dealers will replace the sunroof glass panel, free of charge. The recall began on October 21, 2013. Owners may contact Audi of America at 1-800-822-2834. Volkwagen's number for this campaign is 60B6/1L.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
2EA22001 · Engine Stall - Turbo Failure
Opened Apr 4, 2022 · Closed May 26, 2023
Status: closed (inferred from source dates) · Engine And Engine Cooling:engine:gasoline:turbo/supercharger; Engine And Engine Cooling:engine:oil/lubrication:filter/screen
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
Additional source detail variants (2)
Engine And Engine Cooling:engine:gasoline:turbo/supercharger
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
Engine And Engine Cooling:engine:oil/lubrication:filter/screen
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
PE21009 · Engine Stall - Turbo Failure
Opened Mar 29, 2021 · Closed May 27, 2022
Status: closed (inferred from source dates) · Engine And Engine Cooling:engine:gasoline:turbo/supercharger; Engine And Engine Cooling:engine:oil/lubrication:filter/screen
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.
Additional source detail variants (2)
Engine And Engine Cooling:engine:gasoline:turbo/supercharger
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.
Engine And Engine Cooling:engine:oil/lubrication:filter/screen
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.