2021 Subaru Outback problems & reliability
292 owner complaints filed with NHTSA for the 2021 Subaru Outback, alongside 4 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
2 complaints report injuries (3 injured).
Federal crash records (FARS 2020–2023): 2021 Subaru Outback vehicles were involved in 32 fatal crashes with 16 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Visibility/wiper → | 97 | 33% |
| Electrical System → | 73 | 25% |
| Unknown OR Other | 64 | 22% |
| Forward Collision Avoidance → | 29 | 10% |
| Engine → | 20 | 7% |
| Vehicle Speed Control → | 18 | 6% |
| Air Bags → | 16 | 5% |
| Power Train → | 11 | 4% |
| Fuel/propulsion System → | 10 | 3% |
| Visibility → | 10 | 3% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 5,000 miles (middle 50% between 1,650 and 14,000 miles), based on 55 complaints that included mileage.
Complaints by incident year
What owners report
“My 2021 Subaru Outback suffered a failure of the Oil Control Valve (OCV), a sealed Subaru component with no maintenance interval, no inspection procedure, and no preventative service. This failure allowed engine oil to migrate into multiple wiring harnesses and modules, causing extensive electrical contamination. This…”
Electrical System · filed Jul 31, 2026
“I was already parked in a spot in a public parking lot. I tapped the accelerator pedal to move the car a few inches. The vehicle responded by violently accelerating, hitting a vehicle directly in front of me in another parking space. I applied my brake but the car would not stop. The force of the acceleration pushed…”
Forward Collision Avoidance · filed Jul 6, 2026
“First battery drain in car. Bought a new battery and it drained again for the second time. Called Suburu to ask about a parasitic drain from the DCM and they said it was likely that and told me to call Suburu America. Did that but they wanted me to take it to a Suburu dealer to get the problem verified. I don’t have…”
Unknown OR Other · filed Jun 15, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
468 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2021 Subaru Outback. The 10 most recent:
This bulletin announces the design change made to the high-pressure fuel pump developed to prevent DTC P0087 (Fuel Rail/System Pressure – Too Low Bank 1). (This is an revised version of the original bulletin.)
09-123-24R · Service Bulletin/Repair Instructions · issued Jul 28, 2026
This bulletin announces design changes made to the fuel injector in response to the DTCs listed. (This is an revised version of the original bulletin.)
09-81-21R · Service Bulletin/Repair Instructions · issued Jul 27, 2026
This bulletin provides new diagnostic steps for DTC P0851 and P0852 to be used in conjunction with the applicable Service Manual.
16-159-26 · Service Bulletin/Repair Instructions · issued Jul 23, 2026
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, 2026
This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on the vehicles listed. (This is an revised version of the original bulletin.)
15-246-19R · Service Bulletin/Repair Instructions · issued Jun 30, 2026
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…
09-74-21R · Service Bulletin/Repair Instructions · issued Jun 26, 2026
This bulletin announces design changes made to the fuel injector and fuel pipe in response to the DTCs listed DTC P030* / Engine Knocking / DTC P219C-D-E-F. (This is an revised version of the original bulletin.)
09-81-21R · Service Bulletin/Repair Instructions · issued Jun 25, 2026
This bulletin provides new diagnostic steps for DTC P0851 and P0852 to be used in conjunction with the applicable Service Manual.
16-159-26 · Service Bulletin/Repair Instructions · issued Jun 23, 2026
This 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
This announcement is requesting retailer staff to retain the EyeSight protective hood covers from Generation 4 EyeSight cameras.
SubaruNet Annoucement (E · Other · issued Jun 12, 2026
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2021 Subaru Outback has 4 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2021 Subaru Outback?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 5,000 miles — budget accordingly if the car is approaching that mileage.