2020 Subaru Legacy Transmission and drivetrain Problems
- Complaints
- 7about this part
- Share
- 6%of 121 total for the year
- Median mileage
- 45,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 7 complaints about the transmission and drivetrain of the 2020 Subaru Legacy, 6% of the 121 complaints for this model year. Where a mileage was given, the median is 45,000 miles. 2 recall campaigns on record are filed under a similar system.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My car begins to jerk or pulsate, as if power is being applied and removed quickly, while the car is under load. I first noticed this problem while driving up long inclines on the interstate. Then, I noticed it while accelerating from relatively slow speed to highway speeds. Today, while driving on a level highway maintaining speed, the car kept doing it in a very noticeable (hard) manner. I have taken the car to the dealership, but they didn't observe this problem and said the car wasn't showing any codes. My car has between 18,500 miles on it, and the problem continues to get worse. …”
NHTSA complaint #11397972, filed 2021-02, 18,500 miles“At approximately 30k miles we had noticed the vehicle sounded loud, like a Turbo. It got worse and after returning from our vacation trip to Maine, it was noticeable louder but couldn’t place a finger on the problem. We brought the vehicle in to Victory Subaru in Morristown and they diagnosed the two rear failed wheel bearings. My question is how can both wheel bearings fail at only 20k and is there a potential for a system wide recall? Thanks”
NHTSA complaint #11558437, filed 2023-12“The contact owns a 2020 Subaru Legacy. The contact stated while driving at an undisclosed speed, the contact stated that several unknown warning lights illuminated, and the gear shifter was inoperable. The contact stated that the transmission failed to shift as needed. The vehicle was towed to the dealer but was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 69,738.”
NHTSA complaint #11539913, filed 2023-08, 69,738 miles“The contact owns a 2020 Subaru Legacy. The contact stated that while in a parking space with her foot on the brake pedal and the transmission in drive(D), the vehicle independently accelerated without warning. The contact stated that the vehicle drove over the parking median; however, she managed to stop the vehicle before accelerating up a hill. Due to the failure, the contact had the vehicle towed to a dealer but the mechanic found no defect with vehicle. The manufacturer was notified of the failure and a complaint was filed. The vehicle was not diagnosed or repaired. …”
NHTSA complaint #11478462, filed 2022-08, 45,000 miles“Continuously Variable Transmission (CVT) chain may slip and/or break. NHTSA recall 21V955000 Subaru recall WRK21 A software issue in the transmission control unit (TCU) may allow the continuously variable transmission to engage before the drive chain is properly secured, the automaker says. This could result in the chain slipping and breaking, leading to a loss of power and a risk of a crash. Component has not been inspected by the manufacturer. NHTSA reported this recall Dec. 9th, 2021. Received Subaru recall notice in mail Feb. …”
NHTSA complaint #11488576, filed 2022-10Related recalls
- 22V485000Jul 8, 2022Subaru of America, Inc. (Subaru) is recalling certain 2020-2021 Outback and Legacy vehicles. A programming error in the Transmission Control Unit (TCU) may…Covers: Subaru Legacy 2020–2021, Outback 2020–2021
- 21V955000Dec 9, 2021Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2020 Legacy and Outback vehicles. A programming error in the Transmission Control Unit…Covers: Subaru Legacy 2020, Ascent 2019–2020, Outback 2020
Related service bulletins
- 11037942Sep 28, 2026This announcement provides information on an enhancement of the TechShare CVT diagnostic assitance application.
- 11036804Aug 21, 2026This Announcement provides diagnostic assistance for CVT issues.
- 11036814Aug 20, 2026This bulletin provides guidance when diagnosing chain slip, judder, shudder, and hesitation concerns on the TR580 model CVT transmissions used in the models listed.
- 11036809Aug 20, 2026This Service Information Bulletin announces the release of a new diagnostic assistance application for TR690 and TR580 CVT-equipped vehicles. This is an revised version of the…
- 11036808Aug 20, 2026This bulletin announces availability of new reprogramming files developed to address SYMPTOM 1: A jerk or judder sensation felt from the powertrain during braking with the air…
- 11036806Aug 20, 2026This Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model…
- 11034271Jun 5, 2026This bulletin provides guidance when diagnosing chain slip, judder, shudder, and hesitation concerns on the TR690 model CVT transmissions used in the models listed. (This is an…
- 11033077May 28, 2026This Bulletin announces a correction to the diagnostic procedures for certain CVT related DTCs, including P0730, P0746, P0747, P0841, P0846, P0867, P1867, P1894, and P2723.
- 11033061May 12, 2026This bulletin announces a design change to the TR690 CVT control valve body which features an enhanced line pressure sensor O-ring, designed to prevent abnormal sensor readings…
- 11033056May 4, 2026This announcement provides information on the remanufactured CVT transmission program.
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2022 | 1 | 3% |
| 2021 | 2 | 6% |
| 2020 | 7 | 6% |
| 2019 | 1 | 1% |
| 2018 | 2 | 2% |
| 2017 | 4 | 3% |
| 2016 | 13 | 9% |
| 2015 | 15 | 9% |
| 2014 | 6 | 11% |
| 2013 | 12 | 18% |
| 2012 | 34 | 38% |
| 2011 | 47 | 28% |
| 2010 | 50 | 33% |
| 2009 | 2 | 3% |
| 2008 | 6 | 9% |
| 2007 | 1 | 3% |
| 2006 | 8 | 9% |
| 2005 | 13 | 7% |
| 2004 | 2 | 4% |
| 2003 | 5 | 8% |
| 2002 | 7 | 13% |
| 2001 | 2 | 3% |
| 2000 | 14 | 15% |
| 1999 | 18 | 19% |
| 1998 | 14 | 12% |
| 1997 | 17 | 12% |
| 1996 | 8 | 7% |
| 1995 | 9 | 5% |
| 1994 | 5 | 8% |
| 1993 | 9 | 12% |
| 1992 | 5 | 9% |
| 1991 | 16 | 21% |
| 1990 | 14 | 17% |
Other parts of the 2020 Subaru Legacy
66 complaintsOther or unknown
26 complaintsElectrical system
15 complaintsForward collision avoidance
7 complaintsEngine
4 complaintsVehicle speed control
4 complaintsBrakes
2 complaintsLane departure
2 complaintsAir bags
1 complaintsBack-over prevention (rear camera)
1 complaintsExterior lighting
1 complaintsFuel system
1 complaints
← All problems reported for the 2020 Subaru Legacy
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology