The is a compact crossover SUV that has been manufactured by Subaru since 1997. The first generation was built on the platform of the Impreza in the style of a taller station wagon, a style that continued to the second generation, while the third-generation model onwards moved towards a crossover SUV design. A performance model was available for the second-generation Forester in Japan as the Forester STi.

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First generation (SF; 1997)

The Forester was first introduced as the Streega concept at the 1995 Tokyo Motor Show and became available for sale in Japan in February 1997, reaching the U.S. market later that year for the 1998 model year. As one of the first crossover SUVs, it was reportedly inspired by Volkswagen. Built in the style of a station wagon, the Forester featured a taller stance, higher H-point seating, and a standard all-wheel drive drivetrain. Subaru marketed it with the slogan "SUV tough, Car Easy". It utilized the Impreza platform but was powered by the larger 2.5-liter DOHC EJ25D engine from the Subaru Outback, producing 123 kW (165 hp) at 5,600 rpm and 220 Nm (162 lb-ft) of torque at 4,000 rpm.

Japan In its domestic market, the Forester replaced the Impreza Gravel Express, known in the US as the Subaru Outback Sport. However, the Outback Sport remained in production for the U.S. market. The Forester appeared after the introduction of the Nissan Rasheen in Japan with a similar appearance, and the Forester's Japanese competitors include the Toyota RAV4, Mitsubishi RVR, and the Suzuki Grand Vitara. Because of the Forester's low center of gravity, it meets the United States federal safety standards for passenger vehicles and does not require a "risk of rollover" warning label on the driver's visor. Size- and price-wise, it fits between the shared Impreza platform and the larger Legacy.

The automatic transmissions used on AWD-equipped vehicles will normally send 60% of the engine's torque to the front wheels and 40% to the rear wheels, using a computer-controlled, continuously variable, multi-plate transfer clutch. When the transmission detects a speed difference between the front and rear axle sets, the transmission progressively sends power to the rear wheels. Under slip conditions, it can achieve an equal split in front and rear axle speeds.

When accelerating or driving uphill, the vehicle's weight shifts rearward, reducing front-wheel traction, causing the transmission to automatically send torque to the rear wheels to compensate. When braking or driving downhill, the vehicle's weight shifts towards the front, reducing rear-wheel traction. The transmission again compensates by sending torque to the front wheels for better steering control and braking performance. If the automatic is placed in reverse or first gear, the transmission divides the torque 50/50 to both front and rear wheels. The manual transmission cars are set up with a near 50/50 torque split as a base setting, and it varies from there. Essentially, manual cars are set up with more bias towards the rear than automatic cars.

Australia There was a change in body styling for all 2001–2002 models, and the 2001/2002 GT spec also had a change in engine management and power output was increased from 125 to .

United States The U.S. market first got the car starting in late 1997 as a 1998 model. The 1998 had the 2.5-liter DOHC (EJ25D) engine, and in 1999+ models changed to a 2.5-liter SOHC naturally aspirated engine (no turbocharged engines). In 2000, for MY2001, Subaru updated the exterior with a modest facelift to the front, rear, sides, and the interior's dashboard.

The trim levels were the basic model "L" and the fully equipped "S" for the USA versions.

Forester L came with a high level of standard equipment, including ABS, air conditioning, power windows, power locks, cruise control, digital temperature gauge, multi-reflector halogen headlights, fog lights, roof rack, rear window defogger, trailer harness connector, reclining front bucket seats with adjustable lumbar support, tilt steering, tinted glass, AM/FM/cassette stereo with its antenna laminated in the left-rear quarter window. Notably new in 2001 were the three-point seatbelts for all five seating positions, including force limiters in front and height-adjustable shoulder belt anchors for front and rear outboard positions, plus rear seat headrests for all three seating positions.

Forester S adds a viscous limited-slip differential for the 2000 Model Year, rear disc brakes, 16 × 6.5-inch alloy wheels with 215/60R16 tires (the L uses 15 × 6-inch steel wheels), upgraded moquette upholstery, heated front seats with net storage pockets in back, dual vanity mirrors, heated side-view mirrors, heated windshield wipers, and keyless entry. New equipment for 2001 included Titanium pearl paint for the bumpers and cladding; six-disc in-dash CD sound system; leather-wrapped steering wheel, shift knob, and handbrake handle; variable intermittent wipers with de-icers and driver's side fin; and the five-spoke alloy wheels. Some models were equipped with the optional premium package on the Forester S, including monotone paint (Sedona Red Pearl), power moonroof, front side-impact airbags, and gold accent wheels. Other options were the automatic transmission, chrome tailpipe cover, and auto-dimming rear-view mirror with compass.

Second generation (SG; 2002)

The second generation was introduced as a 2003 model at the 2002 Chicago Auto Show, based on the new Impreza platform, featuring several fine-tune improvements over the past model. The 2003 Forester features weight-saving refinements such as an aluminum hood, perforated rails, and a hydro-formed front sub-frame. The most noticeable change was the offering of 2.5 L versions (normally aspirated and turbocharged) and in the U.S. the introduction of the turbocharged 2.5-liter model.

In the United States, the naturally aspirated X (previously L) and XS (previously S) were released in 2003. In 2004, the turbocharged XT trim was released in the USA. However, a turbocharged version was available since the late 1990s elsewhere in the world. The X and XS models feature a 2.5 L SOHC EJ253 engine, while the XT model features a 2.5 L turbocharged DOHC engine. However, the pre-facelift, naturally aspirated, models featured an EJ251 single overhead cam engine. One of the only differences between the two engines is that the EJ251 is connected via a throttle cable. Whereas the EJ253, introduced in the facelift, used a drive by wire system. Both engines have timing belt (camshaft). The XT model uses the same Mitsubishi Motors TD04 turbocharger used in the Subaru Impreza WRX.SubaruForester.org, "Turbocharger Specifications for 2nd Gen Forester XT," https://www.subaruforester.org, Accessed June 2024. All Forester 2.5 L engines are of the interference engine type. The flat engine can be mounted lower in the car and gives the Forester a lower center of gravity than other 4x4s or soft roaders. The two-liter gasoline boxer-four engined version is reported to do of fuel in town.

Starting with the 2004 XT, the turbocharged version had Active valve control system cylinder heads. The i-AVLS (active valve lift system) became standard on the naturally aspirated version of the Forester in 2006. This increased horsepower and torque figures to 173 HP and 166 ft-lbs. The 2006 XT received a higher compression ratio to 8.4:1 from 8.2:1. This increased the XT's power to 230 HP and 235 ft-lbs.

For the 2006 model year, Subaru gave the SG Forester a facelift, using redesigned headlights, tail lights, hood, grille, front bumper, and side mouldings.

Safety MY03-04 Models has a 4-Star ANCAP safety rating. MY05 Forester Model had a mid-life update, which increased its ANCAP safety rating to 5 Stars.

In 2006, the turbocharged engine (powering the Forester XT) was awarded International Engine of the Year. This engine is also used in the Subaru Impreza WRX, as well as the re-badged Saab 9-2X Aero.

Maintenance All of the 2.5-liter 4-cylinder engines for this generation have a timing belt made of rubber and cord. A belt must be replaced at . These engines are interference engines, meaning that if the timing belt breaks or stretches, the pistons will hit the valves, requiring an engine teardown, and a likely rebuild. Also, if this belt is replaced around 105,000 miles, it is a good idea to change the water pump, thermostat, belt tensioner and all the idler pulleys for this belt. The water pump and thermostat are behind this belt. In Australia for the Series II (MY06) cars, Subaru changed the recommended service interval for the timing belt replacement from 100,000 kilometers to 125,000 kilometers. The 2.5-liter 4-cylinder engine in the first-generation Foresters featured head gaskets which were prone to premature failure. For 2003 and later, this problem was addressed with a revised, higher performing design, but it remained a problem.

United States

For the U.S. market, the car was offered with either the 2.5 SOHC naturally aspirated engine, or the 2.5 DOHC turbocharged version added in 2004. In 2005, the L.L. Bean edition was added. In 2006, the styling was updated, Active valve lift system was added to non-turbo engines to improve power and efficiency, the XS model was deleted, and the Premium model was added. In 2007, a bottle holder was added to front door panels, the 'Sports' trim level was added, which changed some interior and exterior features and added the VDT/VDC transmission to the XT Sports turbo Automatic model. In 2008, TPMS was added, the L.L. Bean model deleted rear load-leveling suspension but gained a radio upgrade, and the XT Turbo Limited models got the VDT/VDC Auto transmission.

Australia

The Forester had three main models available in Australia until July 2005, which are X, XS and XT. Both the X and XS are equipped with the naturally aspirated 2.5 L engine producing , while the XT received the turbo engine with a higher output of . From the Series II which was released in August 2005, the engine was upgraded to for the X and XS and for the XT grade.

Following a General Motors (GM) and Subaru tie-up in 1999, GM considered rebadging the Forester as a Holden in the Australian market as the brand lacked an SUV offering. In exchange, GM would provide Subaru the Holden VY Ute. Subaru considered naming the rebadged Ute the Subaru Brumby. According to former Subaru Australia managing director Nick Senior, the plan was called off due to objection from Subaru Australia.

India The Forester was sold in India by General Motors India as the Chevrolet Forester. Introduced in 2003, it was the first Chevrolet-badged model released in India, as previous GM models are badged as Opels. Sales of the Chevrolet Forester ended in 2007 since General Motors no longer holds an ownership stake in Subaru's parent company, Fuji Heavy Industries.

China A look-alike was produced by Yema Auto and known as the Yema F99 in China. It was a similar design to the pre-facelifted model. Production ran from 2012 to 2014. The engine was a 1.5l 4 cylinder mated to a 5-speed manual gearbox. The car was not related to the Forester even though they look very similar. The Forester was imported to China from 2004 until 2007 in the following models:

2004 Version sold in China: 2.0XT Automatic

2006 Version (Facelift) sold in China: 2.0X Manual 2.0X Automatic 2.5XT Automatic

2007 Version (Facelift) sold in China: 2.0X Manual 2.0X Automatic 2.5XT Automatic

Forester STi (SF and SG; 2004)

In 2004, Subaru launched the Forester STi for the Japanese market only. A "sportier" version of the standard second-gen (SG) Forester, the Forester STi incorporated most of the running components from the WRX STi, with several other changes. It was never sold outside of Japan.