2004 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026
2004 · All trims · All engines
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2004 Subaru Forester has 7 documented known issues, with 2 rated critical. The most serious are EJ25 Head Gasket Failure (External Leak) ($1,800-$3,500 repair) and EJ255 Turbo Piston Ringland Cracking and Engine Failure (Forester XT) ($4,000-$8,000 repair). Across all issues with published estimates, repair costs range from $50 to $8,000. DIY maintenance guides at au7o.io.
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2018 Forester, 2018-2020 Impreza, Legacy, Outback, 2018-2019 BRZ, WRX, and Toyota 86 vehicles. The low-pressure fuel pump inside the fuel tank may fail.
AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION
Subaru of America, Inc. (Subaru) is recalling certain 2015-2018 Forester vehicles equipped with heated seats. An electrical connection in the front passenger seat for the Occupant Detection System (ODS) may loosen.
TIRES
Subaru of America, Inc. (Subaru) is recalling certain 2018 Subaru Forester vehicles. The Certification Label may indicate the incorrect wheel size, tire size, and air pressure. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 110, "Tire Selection and Rims."
Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2004 Subaru Forester has 7 documented issues. The most frequently reported are: EJ25 Head Gasket Failure (External Leak), EJ255 Turbo Piston Ringland Cracking and Engine Failure (Forester XT), Oil Pump Backing-Plate Screws Loosening — Front Crank Seal Push-Out and Low Oil Pressure. Of these, 2 are rated critical and should be addressed promptly.
The 2004 Subaru Forester has 7 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: EJ25 Head Gasket Failure (External Leak) and EJ255 Turbo Piston Ringland Cracking and Engine Failure (Forester XT). 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 Forester issues range from $50 to $8,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, EJ25 Head Gasket Failure (External Leak), typically costs $1,800-$3,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
The EJ25 2.5L horizontally-opposed engine in 1998-2010 Foresters is notorious for external head gasket failure. Unlike typical blown head gaskets that cause overheating, the Subaru EJ25 gaskets fail externally, leaking coolant and oil down the sides of the engine. The failure is… Repairs typically run $1,800-$3,500. Severity: high.
The turbocharged EJ255 has thin, cast-piston ringlands that crack under detonation. The large bore, high cylinder temperatures and a flat oil pan that lets oil slosh away from the pickup under cornering make the engine vulnerable: a single knock event (low-octane fuel, poor tune,… Repairs typically run $4,000-$8,000. Severity: high.
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.
EXTERIOR LIGHTING:BRAKE LIGHTS:SWITCH
Subaru of America, Inc. (Subaru) is recalling certain 2014-2016 Forester, 2008-2016 Impreza sedans, 2012-2016 Impreza station wagons, 2008-2014 WRX sedans (including STI), and 2013-2017 Crosstrek vehicles. Exposure to certain contaminants may cause the brake light switch to malfunction, preventing the brake lights from illuminating and also preventing keyless ignition vehicles from starting and CVT/automatic transmissions from being able to be shifted out of Park.
ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
Subaru of America, Inc. (Subaru) is recalling certain model year 2015-2016 WRX vehicles manufactured April 10, 2015, to October 21, 2015, and Forester 2.0XT vehicles manufactured April 10, 2015, to October 20, 2015. The turbocharger air intake duct may crack and possibly result in an engine stall.
+ 1 more recalls. Check all on NHTSA.gov
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The EJ-series front-mounted oil pump has a rotor cover (backing plate) held on by five small screws installed without thread locker at the factory. On high-mileage engines these screws routinely work loose. Pressurized oil then escapes past the rotor cover into the pump body behi… Repairs typically run $150-$900. Severity: medium.
On automatic-transmission Foresters with the 4EAT gearbox, all-wheel drive is managed by an electronically controlled multi-plate transfer (MPT) clutch on the tail of the transmission, modulated by the 'Duty C' solenoid. When the solenoid sticks or the clutch pack glazes, the clu… Repairs typically run $250-$1,800. Severity: medium.
The single knock sensor bolted to the top of the EJ block on SF- and early SG-generation Foresters has a brittle plastic/resin housing that cracks after years of heat cycling directly on the block. Once cracked, the piezo element's circuit reads out of range and the ECU sets P032… Repairs typically run $80-$250. Severity: low.
The wiring that feeds the tailgate runs through a flexible rubber boot between the body and the gate on the passenger side. Every open and close flexes those conductors, and over years the copper work-hardens and fractures inside the insulation, so the wire looks intact from outs… Repairs typically run $50-$450. Severity: low.
The rear differential on SF and SG Foresters hangs on rubber bushings — a large front mount bushing plus rear outrigger bushings tying the diff nose and carrier to the body. The rubber dry-rots and cracks with age, letting the differential rotate and move vertically before it tra… Repairs typically run $150-$700. Severity: low.
