2021 Audi Q7 engine problems
16 owner complaints filed with NHTSA name the engine on the 2021 Audi Q7 — 24% of all complaints for this model year.
What owners report
“My independent repair shop has just diagnosed a coolant leak weeping from the vacuum line connection at the water pump; they referred to this problem as “coolant migration”. As documented extensively by Audi in Technical Service Bulletin 19-23-45 (2070349/2), this indicates an internal seal failure…”
filed Jun 27, 2026
“- Engine water pump failure and coolant intrusion into the vacuum system. Parts were replaced on 5 Nov 2025 and possible still at the dealer's location. - The defect poses the following safety risks: It resulted in contamination of vacuum lines; potential for sudden engine stalling or loss of power…”
filed Dec 15, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This bulletin provides information when there is increased oil consumption; >0.5ltr/1000 km.
TSB_2074640_3 · Service Bulletin/Repair Instructions · issued Jun 26, 2026
Engine problems in other Q7 years
| Year | Reports | Share |
|---|---|---|
| 2020 Q7 | 7 | 27% |
| 2019 Q7 | 5 | 8% |
| 2018 Q7 | 37 | 26% |
| 2017 Q7 | 59 | 19% |
| 2015 Q7 | 12 | 27% |
| 2014 Q7 | 10 | 22% |
| 2013 Q7 | 11 | 27% |
| 2012 Q7 | 8 | 28% |
| 2011 Q7 | 2 | 9% |
| 2010 Q7 | 5 | 17% |
| 2009 Q7 | 3 | 14% |
| 2008 Q7 | 2 | 6% |
Other reported problem areas on the 2021 Audi Q7
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.