2021 Subaru WRX Common Problems & Defect Telemetry
Authoritative defect intelligence synthesized from 13 verified NHTSA owner complaints, 1 federal safety recalls, and interquartile failure mileage telemetry.
The 2021 Subaru WRX receives a 8.3/10 MazicBay Reliability Index based on 13 verified NHTSA federal complaints and 1 safety recalls. The primary reported failure mode is Engine Stalling, Oil Consumption & Cooling Defect Reports with a median failure point at 24,255 miles (IQR: 17,383 – 31,128 mi). Out-of-warranty repairs benchmark at $950 – $3,200 .
5.2 complaints / 10k sold
Verified US federal records
Crash, fire & stall audit
1 Active / Free Remedies
2021 WRX Failure Distribution by Vehicle Subsystem
Top Reported Problem Clusters (5)
Engine Stalling, Oil Consumption & Cooling Defect Reports
Transmission Hesitation, Hard Shifting & Slipping Reports
Electric Power Steering Assist & Suspension Noise Reports
Electrical Parasitic Drain, Infotainment & Harness Reports
Service Brakes, ABS Actuator & Master Cylinder Reports
Official NHTSA Safety Recalls (1)
EXTERIOR LIGHTING:BACK UP LIGHTS:SWITCH
Summary: Subaru of America, Inc. (Subaru) is recalling certain 2015-2021 WRX vehicles. The backup light switch may corrode and become inoperative, which can result in t
Tools for Diagnosing the 2021 Subaru WRX
Reads & clears all DTC codes including ABS, SRS, TPMS. Live sensor data with freeze frames. Works on all 1996+ vehicles.
Pre-gapped OEM-spec iridium plugs restore smooth combustion on misfiring cylinders.
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Pre-Purchase Inspection Checklist for 2021 Subaru WRX
Before purchasing a used 2021 Subaru WRX, perform the following targeted inspections based on reported federal defect patterns:
Scan the OBD-II port under the dash for pending freeze-frame codes (e.g. P0300 misfires, P0087 fuel rail pressure, P0420 catalytic efficiency).
Test vehicle at low-speed stop-and-go and highway merges. Check for delayed reverse engagement or gear shift shudder between 2nd and 3rd gears.
Verify that all 1 NHTSA safety recall campaigns have been performed by an authorized dealership using the VIN.
Ensure the instrument cluster, center screen, and auxiliary charging ports operate with stable 12.0V–14.4V alternator voltage.
Defect & Reliability Q&A: 2021 Subaru WRX
Is the 2021 Subaru WRX a reliable used car?
The 2021 Subaru WRX earns a 8.3/10 MazicBay Reliability Index based on 13 federal owner reports. Vehicles maintained under factory service schedules exhibit strong longevity past 150,000 miles.
What is the most frequent defect reported on the 2021 Subaru WRX?
The leading complaint category is Engine Stalling, Oil Consumption & Cooling Defect Reports, with a median failure point around 24,255 miles (IQR: 17,383 – 31,128 mi).
Are there free recall repairs available for the 2021 Subaru WRX?
Yes, the NHTSA records 1 safety recall campaign(s) for this model year. All safety recalls are performed 100% free of charge by authorized franchise dealerships regardless of vehicle warranty status.