Free used car buyer guide / BT sixth generation / 2021-2025
Subaru Outback common problems and best years
By BYBA Research - how we score cars
Updated 2026-06-12
BYBA Buy Score
7.2/10
1 walk-away risk, 2 serious faults, 5 minor faults documented for this generation, weighted by severity and repair cost. Biggest factor: cvt chain-slip programming recall. Score methodology.
The 2021-2025 Outback is a good long-distance family wagon if you buy it like a Subaru with electronics, not like an old simple Legacy. The money risks are 2020-2021 CVT chain-slip software recall history, 2020-2022 occupant detection recall, 2020-2022 thermo control valve failures on 2.5-litre cars, windshield replacement with EyeSight calibration, DCM/infotainment battery drain, and 2021-2023 inhibitor-switch water ingress. The safest choice is a 2023-2025 2.5i Premium/Limited without repeated battery or screen issues; XT buyers should favour 2023-2025 cars with clean oil-service and CVT behaviour. Owners should keep recall and software-update paperwork because the same dash warning can mean a cheap update, a TCV job or a CVT inspection.
Faults covered
8
Highest risk
CVT chain-slip programming
Best years
2023-2025
Best buys
- 2023-2025 2.5i Premium/Limited with no 12V drain and a clean infotainment history.
- 2023-2025 XT only with full oil records and no CVT flare, shudder or chain-slip evidence.
- 2022 Wilderness after WRC-22/WRH-22 VIN checks if buying a hard-use car.
Inspect hard
- 2021 2.5i: CVT chain-slip recall WRK-22 and TCV coverage both matter.
- 2021-2022 cars: ODS airbag recall WRA-24 status can still affect resale.
- Any car with cracked glass: EyeSight calibration invoice is mandatory.
Avoid
- 2021 CVT car with open WRK-22 or stored chain-slip data.
- Outback with repeated dead battery and no DCM/dark-current diagnosis.
- Seller claims the 11.6-inch screen is 'just slow' while warnings or camera faults appear.
Next checks
Before you contact the seller
Check the car's history first. Then bring the right tools if it still looks worth viewing.
Primary next step
Check history, title, and recall status
The faults above matter more if the car also has accident history, finance flags, missing service records, or open safety recalls.
Viewing kit
Bring the right tools
Four cheap tools catch most of the faults on this page at a Subaru Outback viewing.
Printable workflow
Take the inspection pack
The PDF is the ordered checklist for the viewing: documents, walk-around, test drive, and scan.
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Engines and trims
Which Subaru Outback should you buy?
On most used cars, the engine and trim choice changes the risk more than the mileage does. Narrow this down before you start viewing cars.
FB25D 2.5L naturally aspirated petrol
2021-2025
BEST LOW-RISK OUTBACK SPEC
The 2.5 is not fast, but it is the sensible Outback engine. On 2021-2022 cars the buyer must still check TCV warranty coverage and CVT recall history. From 2023 onward, the main inspection shifts toward battery drain, infotainment, glass and ordinary Subaru maintenance.
FA24F 2.4L turbo XT / Wilderness
2021-2025
BUY FOR TOWING OR ALTITUDE, NOT TO SAVE MONEY
The XT transforms the Outback's pace, but it adds heat, turbo plumbing and more expensive CVT stress. It is the right engine for towing, mountains and loaded highway use. It is the wrong engine if the buyer only wants basic wagon economy.
BT Outback with 11.6-inch CP1/CP1.5 infotainment and DCM
2021-2025
CHECK ELECTRICAL HEALTH BEFORE TRIM
This row is not an engine, but it changes ownership more than wheel size. Battery drain, black screens, camera display issues and telematics wake-ups are the BT generation's practical irritants. A clean electrical history is worth more than a higher trim badge.
Year notes
Year-by-year buyer advice
Use this to narrow the search before you spend time travelling to view a car.
2021
Second BT year for the US market. CVT select-lever WRA-21, WRK-22 chain-slip recall, inhibitor-switch overlap and early infotainment complaints define the risk profile.
Buyer: Buy only after Subaru confirms CVT recall status and slip-data outcome. A cheap 2021 with vague transmission history is not cheap.
Owner: Keep WRK-22 paperwork with the title documents and document any shift delay immediately.
2022
Wilderness joins the range and several recalls affect limited VIN groups: engine harness/ECU WRC-22, windshield bonding WRH-22, inhibitor switch WRQ-23 and ODS WRA-24.
Buyer: A 2022 can be good, especially Wilderness, but the VIN check is busy. Do not skip windshield-bonding and harness recalls.
Owner: If your car had WRH-22 or WRC-22 work, keep all records; those are unusual enough that buyers will ask.
2023
Facelift styling and improved infotainment behaviour in many cars. Recall exposure is lower than 2021-2022, though inhibitor-switch recall can still apply.
Buyer: This is the cleanest middle-year choice if the screen is stable and the battery has not been replaced repeatedly.
Owner: Keep software current and do not let a weak battery corrupt diagnostics on a car that otherwise drives well.
2024
Mature BT production. No broad NHTSA recall showing in the API for 2024 Outback at time of research, but complaints still cluster around screens, glass and batteries.
Buyer: Treat it as a condition-and-software purchase. Check the screen, camera and EyeSight functions in the car, not after delivery.
Owner: If the 11.6-inch screen freezes, document date, temperature and software version before service.
2025
Final BT-model-year stretch before the next-generation Outback. Recall API returned no 2025 Outback recall results at research time.
Buyer: Best year if budget allows, but still inspect windshield, battery reserve and infotainment; late production does not remove those ownership costs.
Owner: Preserve the clean history. Late BT resale depends on showing it avoided the early-generation electrical headaches.
Common problems
Faults to check before buying
What fails, what it looks like, what it costs, and the quick checks you can do at the viewing - ranked by how badly each one can hurt you.
Fault 1
CVT chain-slip programming recall
Affects
Certain 2020-2021 Outback and Legacy under WRK-22 / NHTSA 22V485.
Symptoms
Delayed engagement, shudder, flare, transmission warning, stored chain-slip data or no symptom before recall inspection.
Typical repair cost
EUR 0 under recall; EUR 5,000-9,000 unsupported CVT replacement.
Codes / scan clues
Transmission slip/ratio codes vary; Subaru TCU data is more important than generic OBD.
Root cause: TCU programming can allow clutch engagement before the CVT chain is fully clamped.
Quick check
- Run VIN for WRK-22.
- Ask whether slip data was found.
- Check for CVT replacement invoice.
- Test Drive and Reverse engagement cold.
- Avoid any car with warnings awaiting diagnosis.
Buyer note
This is the 2021 Outback's biggest drivetrain paperwork item.
Owner note
Finish the recall and save the data-inspection result, not just the appointment receipt.
Fault 2
Thermo control valve failure on 2.5L
Affects
Mostly 2021-2022 2.5L Outback, related to Subaru TCV warranty-extension population.
Symptoms
Check-engine light, EyeSight disabled, poor heat, coolant-temperature code cluster, repeated reset after warning returns.
Typical repair cost
EUR 0 under coverage; EUR 900-1,600 retail.
Codes / scan clues
P26A3, P26A5, P26A6, P0128.
Root cause: Electronic coolant valve sticks or reports invalid position.
Quick check
- Confirm engine is 2.5L, not XT turbo.
- Ask Subaru for TCV extension status.
- Scan for coolant codes.
- Check heater performance.
- Look for revised valve invoice.
Buyer note
A 2021-2022 2.5i without TCV documentation needs room in the price.
Owner note
Do not let a quick code clear erase your warranty evidence.
Fault 3
Battery drain from DCM / infotainment / body modules
Affects
2021-2025 Outback, strongest complaint history on early BT cars.
Symptoms
Dead battery after sitting, repeated jump starts, low-voltage warnings, tailgate oddities, screen wake-ups or DCM-related service notes.
Typical repair cost
EUR 150-350 battery; EUR 250-900 diagnosis/module/bypass work.
Codes / scan clues
Low-voltage and telematics/body communication history.
Root cause: Weak battery reserve plus modules or telematics equipment staying awake; older DCM failures are a known Subaru battery-drain path.
Quick check
- Load-test battery.
- Measure parasitic draw after sleep.
- Scan DCM/body modules.
- Check for DCM warranty-extension or bypass paperwork.
- Ask how long the car can sit without a charger.
Buyer note
A camping wagon that cannot sit four days without a jump pack is not sorted.
Owner note
Push for measured draw numbers; replacing batteries without diagnosis wastes time.
Fault 4
Occupant detection sensor recall
Affects
2020-2022 Outback under WRA-24 / NHTSA 24V227.
Symptoms
Passenger airbag warning, ODS fault, seat sensor recall notice or passenger airbag status behaving incorrectly.
Typical repair cost
EUR 0 under recall; EUR 600-1,300 retail seat sensor work.
Codes / scan clues
ODS/passenger detection codes.
Root cause: A capacitor in the front passenger ODS sensor can crack and short, preventing proper airbag deployment.
Quick check
- Run VIN for WRA-24.
- Check passenger airbag light with occupied and empty seat.
- Ask whether parts were available and installed.
- Scan airbag module.
- Reject active SRS warnings.
Buyer note
An airbag recall is not cosmetic; it changes who can safely sit in the front seat.
Owner note
If parts were delayed, keep the appointment trail and finish the replacement.
Fault 5
Windshield cracking and calibration expense
Affects
2021-2025 Outback, especially early BT cars with EyeSight.
Symptoms
Edge cracks, cracking after minor chips, EyeSight warning after glass replacement, camera calibration invoice missing.
Typical repair cost
EUR 800-2,000 including calibration.
Codes / scan clues
EyeSight/camera calibration codes.
Root cause: Modern Subaru glass and camera alignment make windshield replacement expensive; class-action and complaint evidence is substantial.
Quick check
- Inspect lower edge and camera area.
- Check glass brand/date marks.
- Confirm EyeSight calibration.
- Test adaptive cruise and lane centering.
- Budget replacement if chip is near the camera area.
Buyer note
A tiny crack near the camera zone can become a four-figure Outback bill.
Owner note
Keep calibration documentation with the glass receipt.
Fault 6
Inhibitor switch water ingress
Affects
2021-2023 Outback and Legacy under WRQ-23 / NHTSA 23V755.
Symptoms
No-start in Park/Neutral, gear-position warning, failure to shift normally or recall notice.
Typical repair cost
EUR 0 under recall; EUR 300-800 retail switch/harness repair.
Codes / scan clues
Park/neutral switch and transmission range codes.
Root cause: Insufficient weld may let water enter the inhibitor switch and cause failure.
Quick check
- Run VIN for WRQ-23.
- Confirm replacement switch.
- Start in Park and Neutral.
- Check gear display accuracy.
- Inspect after wet-weather use.
Buyer note
This is a simple recall when handled, but a frustrating no-start when ignored.
Owner note
If gear display acts odd, document it before the switch fails completely.
Fault 7
11.6-inch infotainment freezes and camera display faults
Affects
2021-2025 Outback with CP1/CP1.5 vertical display.
Symptoms
Slow boot, black screen, random reboot, climate controls unavailable, rear camera delay or CarPlay dropouts.
Typical repair cost
EUR 0-250 for software; EUR 900-1,800 for head unit if failed.
Codes / scan clues
B2256 and CP1 infotainment communication codes.
Root cause: Software and communication faults in the large Harman head unit can affect camera and control display functions.
Quick check
- Cold-start and wait for full screen boot.
- Test rear camera three times.
- Use wired and wireless phone functions if equipped.
- Check software update history.
- Scan for B2256/body communication codes.
Buyer note
A slow screen is livable; a screen that blacks out the camera or climate controls changes the deal.
Owner note
Video intermittent failures before service so they cannot be dismissed as user error.
Fault 8
2022 engine harness / ECU damage recall
Affects
Certain 2022 Outback under WRC-22 / NHTSA 22V473.
Symptoms
Engine warning, poor running, intermittent no-start, loose ECU connection or recall notice.
Typical repair cost
EUR 0 under recall; EUR 1,000-2,500 retail harness/ECU repair.
Codes / scan clues
ECU communication and engine sensor circuit codes.
Root cause: Engine wiring harness may have been damaged, causing loose electrical connection to the ECU.
Quick check
- Run VIN for WRC-22.
- Ask whether harness and ECU were replaced.
- Inspect engine-bay harness routing.
- Scan for communication faults.
- Avoid intermittent warning cars without recall proof.
Buyer note
A 2022 with this recall closed is normal; one with mystery ECU faults is not.
Owner note
Keep the harness/ECU repair order because it explains future diagnostic history.
Inspection pack
Printable checklist for the viewing
The free page helps you decide whether the car is worth seeing. The paid guide is the ordered, printable checklist you use at the car.
Documents
- Subaru recall printout for WRA-21, WRK-22, WRQ-23, WRA-24, WRC-22 and WRH-22 where applicable.
- TCV replacement or warranty-extension confirmation on 2.5L cars.
- Battery/DCM diagnosis records if battery has been replaced.
- Windshield and EyeSight calibration invoice.
Walk around
- Inspect windshield edges and camera area.
- Check tire wear for AWD/CVT abuse.
- Look under the engine for oil or coolant residue.
- Confirm roof rails, tailgate and camera housing condition.
In the car
- Boot the 11.6-inch screen from cold.
- Test rear camera, climate controls and phone projection.
- Check passenger airbag status.
- Review warning history with a scan tool.
Test drive
- Cold Drive/Reverse engagement.
- Moderate acceleration for CVT flare.
- Turbo XT: check boost delivery and oil smell.
- Use EyeSight cruise and lane functions.
Scan tool
- Read TCU history and recall data where available.
- Read TCV/coolant codes.
- Read DCM/body low-voltage history.
- Read SRS/ODS and infotainment codes.
Bottom line
Buy: A 2023-2025 2.5i with stable screen, healthy battery and clean recall sheet is the calmest BT Outback. Choose XT only when the extra power has a real use.
Avoid: A 2021 with unresolved CVT recall, repeated flat batteries and cracked EyeSight glass can turn a practical wagon into a chain of expensive appointments.
Quick answers
Subaru Outback buyer questions
The short versions of what this page answers in full.
What are the most common Subaru Outback 2021-2025 problems?
The highest-impact documented faults are: CVT chain-slip programming recall; Thermo control valve failure on 2.5L; Battery drain from DCM / infotainment / body modules. This guide covers 8 faults in total, each with symptoms, typical repair costs, and checks you can do at a viewing.
Which Subaru Outback years are the best to buy?
2023-2025 stand out in this generation. A 2023-2025 2.5i with stable screen, healthy battery and clean recall sheet is the calmest BT Outback. Choose XT only when the extra power has a real use.
Which Subaru Outback should I avoid?
A 2021 with unresolved CVT recall, repeated flat batteries and cracked EyeSight glass can turn a practical wagon into a chain of expensive appointments.
Is the Subaru Outback 2021-2025 a reliable used buy?
BYBA scores it 7.2/10 (buy with checks). 1 walk-away risk, 2 serious faults, 5 minor faults documented for this generation, weighted by severity and repair cost. Biggest factor: cvt chain-slip programming recall.
Get updates when this guide changes
Recalls get added, repair costs shift, and new fault patterns show up in the data. Leave an email and we'll tell you when the Subaru Outback guide gets a meaningful revision. Nothing else, no selling your address.
Research basis
- api.nhtsa.gov: recallsByVehicle
- api.nhtsa.gov: recallsByVehicle
- static.nhtsa.gov: MC-11014843-0001.pdf
- subaruoutback.org: tsb-09-80-21r-thermo-control-valve-20-21-outback-2-5l.558308
- autosafety.org: 2021-subaru-outback
- go-parts.com: obd-b2256-subaru-outback-2020-2024
- CarComplaints 2021 Outback transmission page
- SubaruOutback TCV thread
- Reddit Outback TCV cases
- Subaru TCV warranty extension notice discussion
- SubaruOutback battery drain discussion
- NHTSA WRA-24 dealer document
- SafeCarInfo 2021 Outback recall summary
- Subaru windshield settlement
- ClassAction.org Subaru windshield lawsuits
- CarComplaints Outback recalls
- SubaruOutback infotainment owner thread
- Consumer Reports Outback reliability page