2021 Subaru Outback engine problems
20 owner complaints filed with NHTSA name the engine on the 2021 Subaru Outback — 7% of all complaints for this model year.
What owners report
“Thermo Control Valve Failure- Contact Subaru of Cherry Hill, NJ for Inspection 177,4XX Miles P26A5 code Check engine Light on, Disabled Safety Systems (Eyesight System), Car may have overheated if not pulled over and turned off. Part of warranty extension but did not qualify due to mileage.”
filed May 7, 2026
“The failure involves the engine (powertrain), which was under warranty. The vehicle has experienced four catastrophic engine failures resulting in sudden loss of power, including at highway speeds (65–75 mph). The most recent failure also involved an oil-saturated catalytic converter. These…”
filed Mar 26, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and…
02-193-24R · Service Bulletin/Repair Instructions · issued Jun 30, 2026This bulletin outlines the diagnostic and repair procedure for white smoke emitted from the exhaust after startup.
02-196-26 · Service Bulletin/Repair Instructions · issued Jun 23, 2026
Engine problems in other Outback years
| Year | Reports | Share |
|---|---|---|
| 2025 Outback | 4 | 6% |
| 2024 Outback | 7 | 8% |
| 2023 Outback | 1 | 1% |
| 2022 Outback | 20 | 4% |
| 2020 Outback | 47 | 5% |
| 2019 Outback | 39 | 4% |
| 2018 Outback | 36 | 4% |
| 2017 Outback | 43 | 5% |
| 2016 Outback | 53 | 8% |
| 2015 Outback | 47 | 9% |
| 2014 Outback | 35 | 17% |
| 2013 Outback | 67 | 23% |
Other reported problem areas on the 2021 Subaru Outback
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.