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In its third generation, from 2008 to 2011, the Subaru Impreza marked a significant step forward for the model in terms of design, technology, and safety features. Available in sedan and hatchback body styles, it offered a choice for many buyers. The exterior was modern and sleek, showcasing Subaru’s commitment to improving aesthetics. Inside, the cabin was more refined and spacious, featuring higher-quality materials and advanced technology, including an available touchscreen infotainment system. Safety was improved by introducing the Subaru Vehicle Dynamics Control (VDC) system as standard on most trims, enhancing stability and control. Additionally, Subaru continued to offer its signature symmetrical all-wheel-drive system, providing excellent traction and handling in various road conditions. While the Impreza maintained its reputation for practicality and reliability, this generation also catered to driving enthusiasts by introducing performance-oriented WRX variants featuring sport-tuned suspensions and turbocharged engines. Overall, the third-generation Subaru Impreza from 2008 to 2011 improved on its predecessors in numerous ways, combining style, technology, and safety in a well-rounded package.



Subaru Impreza specification, engine oil capacity, spark plug gap, safety rating, fuel consumption, transmission, and light bulb sizes.


  • Type: 3rd gen  GE/GH/GR

Engine 2.5L 4-Cylinder  DOHC

  • Recommended Oil viscosity: 5W-30
  • Recommended Engine Oil: API
  • Drain Plug Torque: 32.5FT-LBS
  • Oil capacity: 4.5 qt

Spark Plug Gap

  • 2.5L 4-Cylinder: 0.030”

Engine 2.5L 4-Cylinder SOHC

  • Recommended Oil viscosity: 5W-30
  • Recommended Engine Oil: API
  • Oil capacity: 4.4 qt

Spark Plug Gap:

  • 2.5L 4-Cylinder: 0.044”


  • Capacity: 16.9 US gal (64 liters, 14.1 Imp gal)

Front differential (AT models)

  • Capacity: 1.3 US qt (1.2 liters, 1.1 Imp qt)

Rear differential gear oil

Type: API classification GL-5

  • Capacity:
    • STI: 1.1 US qt (1.0 liters, 0.9 Imp qt)
    • Others: 0.8 US qt (0.8 liters, 0.7 Imp qt)

Automatic transmission fluid (AT models)

  • Type: 
  • Capacity: 9.8 US qt (9.3 liters, 8.2 Imp qt)

Power steering fluid

  • Type: 
    • “Dexron III” Type Automatic Transmission Fluid
  • Capacity: 0.7 US qt (0.7 liter, 0.6 Imp qt)

Brake fluid

  • Type: Genuine SUBARU brake fluid  FMVSS No. 116, DOT 3 or DOT 4 brake fluid

Clutch fluid (MT models)

  • Type: Genuine SUBARU brake fluid  FMVSS No. 116, fresh DOT 3 or DOT 4 brake fluid



  • 1.5 L EL15 H4 (gasoline)
  • 2.0 L EJ20 H4 (gasoline)
  • 2.0 L EJ20 H4-T (gasoline)
  • 2.0 L EE20 H4-T (diesel)
  • 2.5 L EJ25 H4 (gasoline)
  • 2.5 L EJ25 H4-T (gasoline)


  • 4-speed automatic
  • 5-speed automatic
  • 5-speed manual
  • 6-speed TY856UB1KA manual

Fuel Consumption


Safety Ratings



Front Lights

  • Front Fog Light Bulb: 9006
  • Front Sidemarker Light Bulb: 1157NA
  • Front Turn Signal Light Bulb: 1157NA
  • High Beam Headlight Bulb: 9005
  • Low Beam Headlight Bulb:
    • H11-55W
    • HID-D2S

Rear Lights

  • Back Up Light Bulb:
    • 921
    • 7440
  • Brake Light Bulb:
    • 7443-SCK
    • 7443
    • LED
  • Center High Mount Stop Light Bulb:
    • 7506
    • LED
  • License Plate Light Bulb: 168
  • Parking Light Bulb: 1157NA
  • Rear Sidemarker Light Bulb:
    • 7443-SCK
    • 7443
    • 168
  • Rear Turn Signal Light Bulb: 7440NA
  • Tail Light Bulb:
    • 7443-SCK
    • 7443
    • LED

Interior Lights

  • Dome Light Bulb: DE3175
  • Luggage Compartment Light Bulb: DE3022
  • Map Light Bulb: DE3175
  • Trunk Light Bulb:
    • 2825
    • 168