Which parts fail
Components named in complaints (fuel pump, injectors, fuel tank, hybrid and EV propulsion).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2012 Volkswagen Passat owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2012 Volkswagen Passat. The contact stated while driving approximately 40 MPH, the vehicle stalled and lost motive power with the battery warning light illuminated. The contact was able to veer to the side of the road. The vehicle failed to restart. The vehicle was towed to an independent mechanic, where it was diagnosed that the high-pressure fuel pump needed to be replaced. The vehicle was then towed to a local dealer who informed the contact that the repair was not covered under warranty. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 83,000.
Stop on middle of the freeway twice and one on the road. Be replace the hoof 24 months ago now again dealer claim need to change the whole fuel system it's 2012 Passat to modification done 2017. For another 6900 dollars this consumer ripoff by be. Car now is in the dealer. It's dirito brothers volkswagon. 2020 n main st Walnut Creek. Scary to stop on [redacted] with this at night with a dog onboard. Very confused vw customer who 2 other vw.
I noticed a fuel smell in the cabin area that continued to get worse. After pulling the back seat I was able to visually see the fuel pump that had lots of micro cracks which was causing a fuel leak. The leak was very dangerous and caused major foam damage to my rear seat and was a major hazard had anything caused an ignition in the cabin, it certainly would have burned the vehicle. I saved the fuel pumped after having a local shop replace it.
The fuel pump design to last the life of the vehicle exploded this is a 10k fix they ( extended the warranty to 120000 miles instead of replacing the bad pumps im at 1290000 miles i don't understand how this is acceptable given the amount of issues and occurrences the fuel pump has exploded
My car caught on fire while I was driving and almost killed me and my daughter. The fire department came and put it out but it is a total loss. I think it could well be the starter as many 2011 build vw passats were affected.
On 6-9-15 this diesel vehicle would not start. Mileage is approximate as I do not have the vehicle (it is at the dealer). Taken to vw of north attleboro, ma for diagnosis and repair. Dealer stated fuel was contaminated and cleaned out fuel lines and replaced filter. Dealer stated vehicle still would still not start. Dealer then stated they investigated fuel down-line of filter and found contaminated fuel in the common fuel distribution rail just before the fuel injectors. Dealer stated they did not retain the fuel filter which would have shown a filter breach/rupture that allowed the contaminated fuel to go beyond the filter causing this additional mischief. …
Vehicle developed a ," loss of power" issue at approximately 1.5 years ago around 50,000 miles. It usually occurs within the first 10- 15 minutes after cold start up and when vehicle is traveling between 10 and 40 MPH. The vehicle will be operating normally, then instantly lose power and start shuddering. When merging onto a highway on numerous occasions since then, the sudden loss of power has nearly caused me to be struck by other vehicles. Along with loss of power, there has been a noticeable odor of diesel fuel which comes from the observed fuel pooling on the top of the engine. This is a fire hazard only waiting to happen. I will not let any other members of my family drive this vehicle for fear of their safety. Manufacturer dealer has been able to duplicate the issue but not resolve it. …
I have a 2012 vw Passat tdi vehicle with 78,000 miles as of October 124, 2016. It is effected by the tdi emissions issue and qualifies under the court settlement that has yet to be approved. The issue I have is that I took the car to the dealer about 1 month ago because the check engine light was on. I was told that the ad blue heater which scrubs nox (albeit not very well) from the exhaust needs to be replaced for $1,100.00. I did some research and came to find out that apparently this has happened hundreds of times to tdi owners especially 2012 models. It is my understanding the failure is a function of time not mileage and has been corrected in newer models. It is ironic that even after paying the $1,100 my car is still out of emissions compliance! I request that vw be forced to do a recall and reimburse owners regardless of the vehicles mileage for this repair.
The car began shaking once in a while and about a month later began to die when idle waiting at red lights or stop signs. I was told the vacuum seal needed replaced but to do so everything would need replaced as you can't just replace a vacuum seal. The electrical component of my car started to go haywire and every light, clock would go off if I tried to start the car. After that as fixed the batter which was tested and at 99% died and had to be replaced. These issues happened when I was on a city street driving and I was stuck in the middle of the road with people passing me and honking. I got the car fixed at steven's creek Volkswagen in sunnyvale, ca it was very expensive and I was out of a car for well over a week. None of these were issues caused by me. I have very low mileage and take good care of my car.
Tl* the contact owns a 2012 Volkswagen Passat. The contact stated that while driving 65 MPH, the vehicle stalled without warning. The vehicle was restarted however, the failure persisted. The vehicle was taken to an independent mechanic however, the mechanic was unable to determine the cause of the failure. The vehicle was not diagnosed nor repaired. The contact referenced NHTSA campaign number: 17V509000 (fuel system, gasoline) as a possible solution to the failure however, the VIN was not included. A dealer was not contacted. The manufacturer was made aware of the failure. The failure mileage was 90,000.
Related recalls
Fuel system, diesel
Volkswagen is recalling certain model year 2012 passat vehicles, manufactured from January 18, 2011, through June 1, 2011. During assembly, these vehicles were built with a diesel fuel filter element that May not seal correctly.
Remedy: Volkswagen will notify owners, and dealers will replace the diesel fuel filter elements, free of charge. The safety recall began on April 27, 2012. Owners May contact Volkswagen at 1-800-822-8987.
Fuel System complaints in other Passat years
Frequently asked questions
How common are fuel system problems on the 2012 Volkswagen Passat?
NHTSA has 46 complaints about the fuel & propulsion system of the 2012 Volkswagen Passat, 10% of the model year's 484 complaints. The component named most often is delivery › fuel pump (1 mentions).
Is there a recall for 2012 Volkswagen Passat fuel system problems?
Yes — NHTSA recall 12V-146 (fuel system, diesel, Apr 5, 2012). Recall repairs are free at authorized dealers.
At what mileage do 2012 Volkswagen Passat fuel system problems start?
Half of the complaints with a recorded mileage happened before about 49,000 miles, and 21% before 25,000 miles.
Is it dangerous?
Owners linked 0 crashes, 1 fire and 0 injuries to fuel & propulsion system problems on this model year. If you notice symptoms, have the car checked before driving further.
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.