2018 Volkswagen Passat engine problems
11 owner complaints filed with NHTSA name the engine on the 2018 Volkswagen Passat — 24% of all complaints for this model year.
What owners report
“A major engineering and material design failure occurred involving internal fluid containment seals, resulting in a severe electrical safety hazard. Pressurized engine coolant breached an internal component seal and began migrating internally directly through the vehicle's engine wiring harness via…”
filed Jun 3, 2026
“The contact owns a 2018 Volkswagen Passat. The contact stated that while driving at an undisclosed speed, the vehicle stalled. There was no warning light illuminated. The vehicle was unable to restart and was towed to the dealer to be diagnosed. The vehicle was diagnosed with battery failure. The…”
filed Feb 5, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This special notice is to inform dealers to return the parts listed and only order the successor parts going forward.
SM 35-2026 · Other · issued Aug 21, 2026Oil Consumption Measurement and Electronic Oil Consumption Measurement
V1718062017813_24 · Service Bulletin/Repair Instructions · issued Jul 9, 2026Instruction, how to lubicate engine before initial start.
TT 13-20-01_3 · Service Bulletin/Repair Instructions · issued Jun 18, 2026Lubricating engine components before reassembly.
TT 10-18-02_2 · Service Bulletin/Repair Instructions · issued Jun 18, 2026
Engine problems in other Passat years
| Year | Reports | Share |
|---|---|---|
| 2017 Passat | 7 | 6% |
| 2016 Passat | 17 | 16% |
| 2015 Passat | 53 | 22% |
| 2014 Passat | 77 | 13% |
| 2013 Passat | 104 | 14% |
| 2012 Passat | 40 | 8% |
| 2010 Passat | 41 | 25% |
| 2009 Passat | 60 | 41% |
| 2008 Passat | 43 | 26% |
| 2007 Passat | 28 | 11% |
| 2006 Passat | 64 | 11% |
| 2005 Passat | 12 | 8% |
Other reported problem areas on the 2018 Volkswagen Passat
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.