Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2005 Volkswagen Passat owners, lightly cleaned up (personal details are redacted by NHTSA).
It just died and I lost brakes, power steering, and only know what else stopped working. Come to find out the splines wear off of the oil pump shift after the counter balance and chain goes out. This is so common a problem that when you Google what happened there are numerous videos and complaints about this issue, with ways to stop it from happening. Korea has already recalled them and Europe has recalled them, why are we so far behind on this. Not only is it expensive, but also a major safety issue because this stops the brakes from working and the car does not have stopping power with the motor dead. NOT EVERYONE KNOWS TO REPORT TO NHTSA!
Car was started at 9:30 am at home- last driven night before locally. Car was driven @ 1 mile, parked, engine turned off, doors locked and left in parking lot. At 9:49 the local police called me to alert me that my car was on fire. There is footage of the fire on youtube. Https://www.youtube.com/watch?v=iqbndfdjpag the engine ignited for unknown reason. This car in un-repairable, there is no insurance claim. Receipts for work performed on this vehicle at the time of purchase and recent repair documentation is available. Car purchase bill of sale, receipt for title and registration and cost for insuring this vehicle since time of purchase are all available.
Tl* the contact owns a 2005 Volkswagen Passat. While driving 25 MPH, the engine began to overheat and drain the coolant. The failure occurred multiple times and the contact had to continuously replace the coolant over a couple of weeks. The check engine indicator illuminated. The vehicle was taken to an independent mechanic who diagnosed that the thermostat and housing needed to be replaced. The vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was 85,000.
August 2007 I got an oil change from the 10 minute oil change place in north arlington, nj. The first week of October my engine seized due to sludge. I always get my oil changed on a regular basis (3,000 miles) not the suggest 5,000 in my car manual. The 10 minute oil change place does not have a computer system to produce records and unfortunately I have only one receipt from the August 2007 oil change. So I went through all my old charge card receipts and debit receipts from my bank to prove that I did get my oil changed. However gensinger Volkswagen in clifton, nj and Volkswagen of America the corporate office said that my receipts were not "proof enough" that it was my car even though some of my receipts had the oil change place twice in one month which proves that I got an oil change & my husband got an oil change. …
I have not had failure yet, but there are several individuals who own the same exact car I own, a 2005 vw Passat tdi. There is an ongoing concern at several news groups including www.tdiclub.com and other diesel enthusiast newsgroups about the oil pump chain unit that is in the vw bhw 2.0 turbodiesel engine. Many of these cars when they get out of warranty at 60K will start to have engine noise which is indicative of the oil pump chain unit chain weakening. This condition leads to complete failure without general warning. This is a disaster waiting to happen. Vw in europe has developed a fix for this engine that involves installing a gear system instead of the chain and tensioner system for the engine balancing system. There are several episodes of people having the engines fail while on the road. I am concerned as an owner of this particular engine vw Passat. …
I own a 2005 Passat tdi gls. My car had developed a very serious noise caused by the oil pump chain unit that was originally on this vehicle. I did talk to vw and my dealer service department about the thrashing chain noise. I got polite denials and blank stares when I told them of this issue. Members of the www.tdiclub.com discovered a vw engineered fix for the vehicles involved. Members who have driven their cars beyond the 80K or so seem more likely to have the chain snap during operation which renders the car inoperative and dangerous during the breakage. The fix is not exactly an inexpensive repair as the parts alone are around $1500 and the installation requires extensive disassembly of the vehicle. The repair involves replacing the chain driven oil pump balance shaft assembly with a gear driven assembly. …
I have a 2005 vw Passat gls with approx 135,000 miles. I took it in to get "winterized", oil change and clear the engine light (whatever the misfire was for), and a factory recall on the engine coils. Got all that done (plus serpentine belt replaced) and was told that the engine light should be OK, if it comes back on...to let them know asap. A day and 1/2 later, the light came back on, and this time, there was barely any heat on in the car. Took it back...they stated that the coils needed to be replaced (again) and that there was an oil leak going into the coils & the fuel injectors, and that the heater core needed to be replaced. I had the coils and the 2 "faulty" injectors replaced. I got frustrated with this dealer and went to another vw deal, for their evaluation. …
The tdi (diesel) engine in the '04 & '05 north American Volkswagen passats was equipped with a chain driven oil pump/balance shaft module. The chain tensioner fails causing the chain to separate which stops the oil pump and destroys the engine. If a person is lucky, like I was, and hears the chain noise before it fails, the engine can be saved. The fix involves installing a new gear driven balance shaft module which contains a new oil pump. The repairs costs ~ $2,500 parts and labor. Volkswagen has ignored this fault in the us (and Canada), denying the problem exists, even though hundreds of cases of failure have been documented. In fact, the new design modules are currently on back order at the vw parts factory. The oil pump chain drive problem is without a doubt a defect. …
My 2005 Passat tdi was leaking a huge amount of oil so I topped off the oil and took it to the mechanic. He showed me a huge gash in the oil pan, resulting in the leak. When we took the pan off the oil pump chain tensioner and chain came out in pieces. The tensioner broke and slammed the chain into the oil pan, making the gouge. We replaced the oil pan, chain, tensioner, and completed an early timing belt change including a water pump. This was around $2000 total. After some research I found out this is likely due to a problem with the balance shaft module / chain driven oil pump setup on these cars. I found out that even though I spent $2000 fixing this I May need to complete the same repairs again or replace the balance shaft module which would be several thousand dollars. …
2.0l vw Passat tdi had a rattling, vibrating chain noise from the oil pump balance shaft module in the oil pan. The oil pump chains/sprockets/tensioners were worn and caused noticeable vibration and rattling noise for thousands of miles; however, it was difficult to diagnose. We had the entire oil pump assembly replaced by a vw dealership at approximately 120,000 miles with OEM gear driven pump which includes the balance shafts and oil pump. It was a $3700 repair to exchange the original oil pump with the gear driven pump. Not a cheap service. The sound before and after the module change was much improved because the gears are quieter. The replacement gear driven oil pump/balance shaft assembly uses a similar balance shaft but with a different oil pump and gear drive. The gear drive smoothes out stress on the oil pump hex shaft so runs much better. …
Engine complaints in other Passat years
Frequently asked questions
How common are engine problems on the 2005 Volkswagen Passat?
NHTSA has 62 complaints about the engine & cooling of the 2005 Volkswagen Passat, 42% of the model year's 148 complaints. The component named most often is engine (19 mentions).
Is there a recall for 2005 Volkswagen Passat engine problems?
No. NHTSA lists no engine & cooling recall for the 2005 Volkswagen Passat, though it has 3 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2005 Volkswagen Passat engine problems start?
Half of the complaints with a recorded mileage happened before about 87,000 miles, and 2% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 1 fire and 0 injuries to engine & cooling 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.