1999-2026 model years · 11,661+ owner reports · Updated September 2026
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According to Au7o's analysis of 11,661+ owner reports, the 1999-2026 Subaru Outback has 40 documented known issues, with 9 rated critical. The most serious are Head Gasket Failure ($1,500-$2,500 repair), Front Propeller (Drive) Shaft Separation From Painted Center-Support Brace Bolt Surfaces (Recall 23V647000 / WRN-23) ($0-$0 repair), Occupant Detection System (ODS) Sensor Failure — Front Passenger Airbag May Not Deploy (Recall 24V-227 / WRA-24) ($0-$0 repair), EyeSight Unintended / Phantom Automatic Emergency Braking (2023-2026 Pre-Collision Braking Defect, Hall v. Subaru) ($0-$0 repair), Thermo Control Valve Failure Causing Check Engine Light and Overheating Risk ($900-$1,800 repair), Windshield Wiper Motor Overheating / Bottom-Cover Melt — Crash and Fire Risk (Recall 16V694 / WTK-71) ($0-$150 repair), Takata Passenger Airbag Inflator Explosion Risk (Recall TKB-20) ($0-$0 repair), CVT Valve Body / Internal Failure (10yr-100k Warranty Extension) ($0-$4,500 repair) and Denso Fuel Pump Impeller Failure Leading to Stalling or No-Start ($0-$900 repair). The most commonly reported issue is Head Gasket Failure with 4,521 owner reports. Across all issues with published estimates, repair costs range from $15 to $4,500. DIY maintenance guides at au7o.io.
POWER TRAIN:DRIVELINE:DRIVESHAFT
Subaru of America, Inc. (Subaru) is recalling certain 2023 Outback, Legacy, Ascent, and Impreza vehicles. The center support bolts for the driveshaft may loosen, resulting in the disconnection of the front end of the driveshaft.
POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH
Subaru of America, Inc. is recalling certain model year 2021 Crosstrek, 2022 Forester, 2021-2023 Legacy, and Outback vehicles. An insufficient weld may allow water to enter the inhibitor switch, causing it to fail.
ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)
Subaru of America, Inc. (Subaru) is recalling certain 2022 Outback vehicles. The engine wiring harness may have been damaged, resulting in a loose electrical connection to the engine control unit (ECU).
VISIBILITY:WINDSHIELD
Subaru of America, Inc. (Subaru) is recalling certain 2022 Impreza and Outback vehicles. The incorrect paint clearcoat may have been applied, which can cause the windshield to be insufficiently bonded to the vehicle. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 212, "Windshield Mounting."
AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER
Subaru of America, Inc. (Subaru) is recalling certain 2020-2022 Outback and Legacy vehicles. A capacitor in the sensors for the Occupant Detection System (ODS) may crack and short circuit, which can prevent the front passenger air bag from deploying in a crash.
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According to Au7o's analysis of 11,661+ owner reports, the 1999-2026 Subaru Outback has 40 documented issues. The most frequently reported are: Head Gasket Failure, Front Propeller (Drive) Shaft Separation From Painted Center-Support Brace Bolt Surfaces (Recall 23V647000 / WRN-23), Occupant Detection System (ODS) Sensor Failure — Front Passenger Airbag May Not Deploy (Recall 24V-227 / WRA-24). Of these, 9 are rated critical and should be addressed promptly.
The 1999-2026 Subaru Outback has 40 known issues documented across 11,661+ owner reports. 9 issues are rated critical: Head Gasket Failure and Front Propeller (Drive) Shaft Separation From Painted Center-Support Brace Bolt Surfaces (Recall 23V647000 / WRN-23) and Occupant Detection System (ODS) Sensor Failure — Front Passenger Airbag May Not Deploy (Recall 24V-227 / WRA-24) and EyeSight Unintended / Phantom Automatic Emergency Braking (2023-2026 Pre-Collision Braking Defect, Hall v. Subaru) and Thermo Control Valve Failure Causing Check Engine Light and Overheating Risk and Windshield Wiper Motor Overheating / Bottom-Cover Melt — Crash and Fire Risk (Recall 16V694 / WTK-71) and Takata Passenger Airbag Inflator Explosion Risk (Recall TKB-20) and CVT Valve Body / Internal Failure (10yr-100k Warranty Extension) and Denso Fuel Pump Impeller Failure Leading to Stalling or No-Start. 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.
Repair costs for known Subaru Outback issues range from $0 to $4,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Head Gasket Failure, typically costs $1,500-$2,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
Reliability varies across model years of the Subaru Outback. Based on documented issues, problems are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 1999-2026 Subaru Outback with 40 documented issues documented across 11,661+ owner reports.
The 2.5L non-turbo engine is known for external head gasket leaks. Oil seeps past the gasket and can contaminate the coolant. Subaru extended warranties and improved gasket design in later years. Repairs typically run $1,500-$2,500. Severity: high.
On certain 2023 Outback (and Legacy, Ascent, Impreza) vehicles, mounting surfaces for the propeller-shaft center support brace bolts may have been inadvertently painted during the supplier's manufacturing process. The paint prevents the bolts from retaining specified torque; with… Repairs typically run $0-$0. Severity: high.
Certain 2020-2022 Outback (and Legacy) vehicles have defective Aisin Occupant Detection System sensors in the front passenger seat. A defect in the ODS sensor printed circuit board can crack a capacitor; moisture entering the capacitor causes a short circuit. This illuminates the… Repairs typically run $0-$0. Severity: high.
Owners of recent EyeSight-equipped Outbacks report unintended, sudden full-force automatic emergency braking ('phantom braking') with no obstacle present — at highway speed, in fog, in construction zones (mistaking cones for vehicles), and even reverse AEB while backing up. A 202… Repairs typically run $0-$0. Severity: high.
Multiple 2020-2023 Outback owners with the 2.5L FB25 engine report failure of the thermo control valve assembly, which can trigger a check engine light, disable normal coolant flow control, and in some cases lead to overheating or poor heater performance. Subaru issued a warranty… Repairs typically run $900-$1,800. Severity: high.
On 2010-2014 Legacy and Outback models, contamination inside the windshield wiper motor bottom cover can cause internal components to interfere. If an obstruction such as snow or ice prevents the wiper arms from returning to the park position, the motor can overheat: the wipers m… Repairs typically run $0-$150. Severity: high.
Older Outbacks (part of the 2003-2014 Subaru population) are covered by the industry-wide Takata airbag recall for the FRONT PASSENGER airbag inflator. The ammonium-nitrate propellant can degrade after years of exposure to heat, humidity, and temperature cycling, causing the infl… Repairs typically run $0-$0. Severity: high.
Early Lineartronic CVT Outbacks (2010-2015) have documented internal CVT failures — most commonly valve-body faults, but also chain/pulley and pressure-control problems — that can cause harsh or delayed engagement, RPM flare, jerking, limp mode, or complete loss of drive. Subaru… Repairs typically run $0-$4,500. Severity: high.
Certain 2020 Outback vehicles were included in the large Denso low-pressure fuel pump recall affecting many manufacturers. The impeller can deform, causing the pump to seize or lose output, which may result in hard starting, rough running, engine stall, or a no-start condition. T… Repairs typically run $0-$900. Severity: high.
The FB25 2.5L engine is known for excessive oil consumption, sometimes using 1 quart every 1,000-2,000 miles. Subaru extended warranty coverage and offered piston ring replacement for affected vehicles. Most common on 2011-2014 models. Repairs typically run $0-$4,000. Severity: medium.
The Lineartronic CVT can develop shudder, hesitation, or jerky operation, especially during light acceleration at low speeds. Subaru has updated CVT software multiple times to address these concerns. Repairs typically run $0-$4,000. Severity: medium.
While the FB25 has improved head gasket reliability compared to older EJ engines, some vehicles still experience head gasket failures. External oil leaks and coolant leaks can develop, particularly at higher mileage. Repairs typically run $1,200-$2,500. Severity: medium.
The A/C compressor can fail, particularly on vehicles in hot climates with heavy A/C usage. Internal compressor failure can contaminate the A/C system with debris. Repairs typically run $600-$1,500. Severity: medium.
An insufficient weld between the switch stator and cover of the transmission inhibitor (park/neutral start interlock) switch allows water intrusion over time, causing the switch to become inoperative. When it fails, the reverse lights do not illuminate and the rearview/backup cam… Repairs typically run $0-$0. Severity: medium.
P0455 indicates a large (gross) EVAP leak — the system can't hold pressure/vacuum at all during the self-test. Across the Subaru lineup (Outback, Forester, Impreza, Crosstrek) the standout pattern is the purge control solenoid valve failing due to internal seal degradation, which… Repairs typically run $30-$700. Severity: medium.
P0016 means the ECM sees the Bank 1 (passenger-side) intake camshaft out of sync with the crankshaft. Subaru's variable valve timing (AVCS) is oil-pressure driven, so on the FB-series Outback (FB25/FB20) this code is highly sensitive to oil level and condition. The common Subaru-… Repairs typically run $70-$2,500. Severity: medium.
The forward-mounted A/C condenser and its connecting refrigerant lines are vulnerable to leaks - sometimes from road-debris/stone damage to the thin condenser, sometimes from a damaged line or failed O-ring at a hose connection. The system slowly loses refrigerant and cooling fad… Repairs typically run $500-$1,100. Severity: medium.
Owners have reported front seat heaters that stop working, heat unevenly, or become excessively hot in localized areas. Complaints and forum reports point to failures in the seat heater element, thermostat/control logic, or seat cushion wiring within this generation. The issue is… Repairs typically run $300-$1,200. Severity: medium.
Owners of 2020-2024 Outbacks frequently report power rear gate problems including failure to open or close, repeated beeping, stopping mid-travel, or reversing unexpectedly. Subaru issued service information for rear gate control module logic and initialization issues, and owner… Repairs typically run $150-$1,800. Severity: medium.
The turbocharged FA24 (FA24F/FA24DIT) 2.4L boxer in Outback XT, Onyx Edition XT, and Wilderness trims uses port-less direct injection only, so fuel never washes the back of the intake valves. Carbon sludge accumulates on the intake ports/valves, typically becoming noticeable arou… Repairs typically run $400-$1,200. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
