This bulletin announces the service manual correction regarding clutch master cylinder reservoir service procedures.
full bulletin at NHTSA ↗2021 Subaru WRX powertrain problems
moderate 6 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Complaints
6
Recalls
0
Avg fix
$2,500
What stands out
Among the 6 model years of Subaru WRX in our records for powertrain problems, this one ranks #3 by owner-complaint volume.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This bulletin announces design changes made to the rear axle hubs. These changes have been implemented to reduce cases water intrusion further leading to harmonic, humming, and grinding type sounds heard from the axle hub while driving.
full bulletin at NHTSA ↗This service bulletin provides a temporary repair procedure to address vibrations and/or judder concerns experienced on turns during acceleration.
full bulletin at NHTSA ↗WRE-22 Backup lamp switch failure safety recall
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 6 most recent
I am filing this complaint to report a serious safety concern involving my 2021 Subaru WRX, which is currently covered under the manufacturer’s powertrain warranty as well as an extended warranty. Subaru of Ontario, an authorized Subaru dealership, failed to properly diagnose or repair ongoing engine issues during multiple service visits. Despite documented problems, the vehicle was released to…
Mileage is 19,300 On 4/5/23 i was entering the gated community where i live stoped pressed remote to open gate then with clutch engaged shifted my wrx into first and the entire steel shaft broke at base where pin secures shaft to linkage this is a wrx sti short throw shifter pn C1010VA001 445 dollar option the Subaru of Ontario repair department indicated that they have never seen such an issue…
NHTSA ID:#10186366 SUBARU TSB #[XXX] This bulletin announces a design change to the clutch release bearing. PRODUCTION CHANGE INFORMATION: The new clutch release bearing was incorporated into production starting with VIN [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Lifetime Tracking Data Displayed Incorrectly with higher data results. High rev's max speed 131mp. I have never gone over 89 mp. MANUFACTURER COMMUNICATION NUMBER: 09-79-21 Components: ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING NHTSA ID Number: 10201791 Manufacturer Communication Number: 09-79-21 Summary This bulletin announces availability of ECM reprogramming files to address isolated…
Severe engine failure! Was driving steady speed on highway, then I let off the throttle and heard a bad knocking noise on deceleration. The engine oil temp increased to around 230F. I slowed down to limp it to the next exit and it started jerking. I made it to an exit and the engine stalled at the red light. No smoke, oil level good, coolant level good. Had it towed to Subaru dealer, where they…
10,510 miles, a more pressing issue arose: the transmission started to bind while in gear. As I pressed the gas pedal, my WRX refused to accelerate, and instead, the engine RPMs surged. This occurred while I was on a three-lane street, in the lane furthest from the shoulder. Despite my attempts to pull over, the WRX wouldn’t engage in gear. I narrowly avoided collisions three times before…
Had powertrain trouble with your 2021 Subaru WRX?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2021 Subaru WRX?
It's a documented issue but not catastrophic. 6 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2021/Subaru/WRX.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.