What are the most common Subaru Legacy problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2021 Subaru Legacy has 6 documented issues. The most frequently reported are: Thermo Control Valve Failure Causing Check Engine Light, Poor Heater Performance, and Possible Overheating, Low-Speed Brake Pedal Pulsation or Vibration from Front Brake Rotor Deposits/Warping, Windshield Cracking Easily and Eyesight Camera Recalibration After Glass Replacement. Of these, 1 is rated critical and should be addressed promptly.
Is the Subaru Legacy reliable?
The 2021 Subaru Legacy has 6 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 1 issue is rated critical: Thermo Control Valve Failure Causing Check Engine Light, Poor Heater Performance, and Possible Overheating. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Subaru Legacy problems?
Repair costs for known Subaru Legacy issues range from $0 to $2,200, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Thermo Control Valve Failure Causing Check Engine Light, Poor Heater Performance, and Possible Overheating, typically costs $1,200-$2,200 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2021-2024 Subaru Legacy Thermo Control Valve Failure Causing Check Engine Light, Poor Heater Performance, and Possible Overheating?
Multiple owners of 7th-generation Legacy models have reported failure of the electronically controlled thermo control valve used in the FB25 cooling system. When the valve sticks or its internal position sensor fails, the car may illuminate the check engine light, lose cabin heat… Repairs typically run $1,200-$2,200. Severity: high.
What is the 2021-2024 Subaru Legacy Low-Speed Brake Pedal Pulsation or Vibration from Front Brake Rotor Deposits/Warping?
Owners of current-generation Legacy models have reported brake pulsation, steering wheel shake, or vibration during moderate braking, sometimes at relatively low mileage. The condition is commonly attributed to front rotor thickness variation or uneven pad deposits rather than a… Repairs typically run $350-$900. Severity: medium.
What is the 2021-2024 Subaru Legacy Windshield Cracking Easily and Eyesight Camera Recalibration After Glass Replacement?
Owners of 2021-2024 Legacy models frequently report windshields that crack from small stone impacts or develop long cracks quickly, often near the camera area. Because the windshield is integrated with the EyeSight driver-assistance system, replacement is more expensive than conv… Repairs typically run $900-$1,800. Severity: medium.
What is the 2021-2024 Subaru Legacy Battery Drain and No-Start from DCM/Telematics Module Staying Awake?
A well-documented issue on late-model Subaru vehicles including the Legacy involves parasitic battery drain tied to the Data Communication Module (DCM), telematics hardware, or related control modules not going to sleep properly. Owners report dead batteries after the vehicle sit… Repairs typically run $250-$1,200. Severity: medium.
What is the 2021-2023 Subaru Legacy Transmission Inhibitor Switch Failure From Water Intrusion (NHTSA Recall 23V755000 / WRQ-23)?
2021-2023 Legacy sedans are among the vehicles Subaru recalled under campaign WRQ-23. The defect is a weld on the park/neutral start interlock switch — the inhibitor switch — that was not made adequately, allowing water to enter the switch body and cause the switch to fail. A Leg… Severity: medium.
What is the 2021-2024 Subaru Legacy Infotainment Head Unit Freezing, Black Screen, and CarPlay/Android Auto Connectivity Problems?
The large center touchscreen used in the current Legacy has generated many owner complaints for lagging, freezing, random reboots, black screens, and unstable Apple CarPlay/Android Auto connections. In some cases climate and vehicle settings become difficult to access because man… Repairs typically run $0-$1,800. Severity: medium.
