Subaru Impreza

The Subaru Impreza is one of the most popular all-wheel drive (AWD) vehicles ever made, and in fact one of the better-made vehicles in general, typically receiving high ratings for reliability and safety. The WRX model of Impreza is one of the most powerful and capable Japanese imports of all time, and the Impreza has been used to win the World Rally Championship (WRC) multiple times.

Although the Subaru Outback now has its own chassis, the Impreza was the basis of the Outback Sport, which came only in wagon form. Like other Subarus, the Impreza is excellent off-road, but the Impreza may be the first model truly credible and worthwhile on the street. While it does have some shortcomings (such as having an excessive percentage of the weight over the front axle) it is still one of the best-engineered machines on the road today.

1993 Subaru Impreza Information

Models Available:

  • Impreza: base model available as a front wheel drive, manual transmission sedan only
  • Impreza L: sedan or Sport Wagon, AWD or FWD, automatic or manual
  • Impreza LS: Sedan or Sport wagon, AWD or FWD, automatic only

Engine

The SOHC EJ Subaru boxer engines were non-interference engines through 1996, run by a single timing belt driving both cams (both sides of the engine) and the water pump. If the timing belt fails, the engine of the models up to 1996 will not be destroyed but re-timing is necessary, because they are non-interference engines. The oil pump is driven directly from the crank shaft and the waterpump by the timing belt."Subaru EJ engine.1

  • Model: EJ18S (1.8 liter; MY1993 and MY1994 only)
    • Type: 4 cylinder 16 valve SOHC Boxer
    • Fuel: Gasoline (87 aki)
    • Fuel Delivery: Multiport Fuel Injection (MPFI)
    • Material: Aluminum Alloy
    • Displacement: 111.1in3/1,820cc
    • Bore: 3.46in/87.9mm
    • Stroke: 2.95in/75.0mm
    • Max Horsepower: 110 @ 5600 rpm
    • Max Torque: 110 @ 4400 rpm
    • Compression Ratio: 9.5:1
    • Firing Order: 1-3-2-4

Electrical

  • Battery:
    • Manual Trans:
      Part: 55D32L-MF
      Reserve Capacity: 99 minutes
      Cold Cranking Amps: 356 A
    • Automatic Trans:
      Part: 75D32L-MF
      Reserve Capacity: 118 minutes
      Cold Cranking Amps: 520 A
  • Alternator: 12V, 75A
  • Ignition System: Distributorless (DIS/Waste Spark)
  • Spark Plugs: NGK BKR6E-11
  • Spark Plug Gap: 0.039 to 0.043 in. (1-1.1mm)

Body

  • Type: 4 door sedan or 5 door wagon
  • Cd: 0.32 (Sedan)
  • Construction: Full-Unibody, high strength steel
  • Dimensions (all models):
    • wheelbase: 99.2"
    • Length: 172.0"
    • Width: 67.1"
    • Height: 55.1"
  • Curb Weight: 2728 lb/1237 kg

Suspension

  • Front: MacPherson Strut
  • Rear: Modified MacPherson Strut
  • Steering: Rack and Pinion, engine rpm sensing variable power assist
  • Brakes:
    • Base and L models:
      9.4" ventilated front discs, 9.0" rear drums
    • LS model:
      4-channel ABS with 10.4" ventilated front discs, 10.3" rear discs
  • Wheels:
    • Pattern: 5 x 100mm

Capacities

  • Fuel Capacity: 15.9 US gallons/60 liters
  • Engine Oil: 4.2 US quarts/4 liters
  • Transmission Oil
    • AWD: 3.7 qt/3.5 l
    • FWD: 2.8 qt/2.6 l
  • Automatic Transmission Fluid: 8.3 qt/7.9 l
  • AT differential gear oil: 1.3 qt/1.2 l
  • AWD rear differential gear oil: 0.8 qt/0.8 l
  • Power Steering Fluid: 0.7 qt/0.7 l
  • Engine Coolant: 6.2 qt/5.9 l

Safety Features

  • Driver's Air bag
  • Front, rear crumple zones
  • height adjustable front shoulder belts, rear outboard shoulder belts
  • Child-proof rear door locks
  • 5 MPH impact bumpers
  • Side-impact door guard reinforcing beams
My 1993 Subaru Impreza LS (Amethyst/Grey)

Broader Information

The Subaru Impreza was introduced in the US as a 1993 model, which began selling in November of 1992. It was available in three trim levels; Base, L, and LS. Without going into too much detail here (this all changes with year) the base model in '93 was offered only as a no-frills vehicle with front wheel drive and a manual five-speed transmissions. The L is offered as AWD or FWD, manual or automatic, and both comes standard with and optionally offers more doodads. The LS comes only with an automatic transmission and is the only model to offer ABS; It, too, was available as FWD or AWD. 1994 models are not substantially changed from 1993.

The first-generation Impreza is, surprisingly, an amazingly well-engineered vehicle. It has been given an A+ reliability rating (specifically the 1993 model) and it is, in general, a highly agreeable vehicle to drive. The AWD model does offer new drivers one surprise; it is heavy for its size, as typical for AWD. The added weight of the center differential, rear differential, and connecting shafts is significant. However, it more than makes up for this added weight by being all-wheel drive; it dramatically improves handling, even in the best conditions, while in inclement weather it is nearly a necessity. The 1.8 liter engine is surprisingly punchy for its size and low horsepower output, and has that markedly odd Boxer exhaust note.

Later models (such as the Subaru Impreza WRX STi) are offered with more than 280 horsepower, limited slip differentials front and rear, and a computer-controlled variable center differential, as well as traction control and yaw control. Subaru's ABS system is considered to be among the best, as is their all-wheel drive system - first in reliability, and second only to Nissan's ATESSA-IV AWD system used on (for example) the Nissan Skyline R34.


2007 Subaru Impreza STiSecond Generation Impreza: 2002-present

VIN Decoding

1.(JFI) 2.(G) 3.(D/G) 4.(2/6) 5.(5/7/8/9) 6.(5/6) 7.(--) 8.(2/3) 9.(G/H) 10.(500001/800001)

How to decipher:

  1. Manufacturer: J=Japan, FI=Fuji passenger car
  2. Model: G=Impreza
  3. Body: D=sedan, G=wagon
  4. Displacement: 2=2.0, 6=2.5l
  5. Trim Level: 5=TS, 6=RS, 8=Outback, 9=WRX
  6. Supplemental Restraint System (SRS): 5=front airbags, 6=front, side airbags
  7. (check digit)
  8. Model Year: 2=02, 3=03 etc.
  9. Transmission: G=5 speed, H=automatic
  10. Serial number: 5xx=sedan, 8xx=wagon

Engines

All DOHC and MY1997+ engines are interference designs, meaning if the timing belt fails, the engine will be destroyed (pistons crash into valves, with predictably destructive effects.)

  • Model:
  • Type: 4 cylinder 16 valve SOHC Boxer
  • Fuel: Gasoline
  • Fuel Delivery: Multiport Fuel Injection (MPFI)
  • Material: Aluminum Alloy
  • Displacement: 2.5l/150ci
  • Bore:
  • Stroke:
  • Max Horsepower: 165 HP @ 5600 RPM
  • Max Torque: 166 ft-lb @4000 RPM
  • Compression Ratio:
  • Firing Order:
  • 2.0l DOHC H-4 Turbo
    • Model: EJ20
    • Type: 4 cylinder 16 valve SOHC Boxer
    • Fuel: Gasoline
    • Fuel Delivery: Multiport Fuel Injection (MPFI)
    • Material: Aluminum Alloy
    • Displacement: 2.0l/122ci
    • Bore:
    • Stroke:
    • Max Horsepower: 227 HP @ 6000 RPM
    • Max Torque: 217 ft-lb @ 4000 RPM
    • Compression Ratio: 8.0:1
    • Maximum Boost: 13.5 PSI
    • Firing Order:
  • 2.5l DOHC H-4 Turbo
    • Model:
    • Type: 4 cylinder 16 valve SOHC Boxer
    • Fuel: Gasoline
    • Fuel Delivery: Multiport Fuel Injection (MPFI)
    • Material: Aluminum Alloy
    • Displacement: 2.5l/150ci
    • Bore:
    • Stroke:
    • Max Horsepower: 300 HP
    • Max Torque: 300 ft-lb
    • Compression Ratio:
    • Firing Order:
  • Transmissions

    1. 5-Speed Manual
      • Gear Ratios
        • 3.454:1
        • 1.947:1
        • 1.366:1
        • 0.972:1
        • 0.738:1
        Final: 3.9:1
    2. 4-Speed Automatic
      • Gear Ratios
        Final: 4.11:1

    Body

    • RS 4 door sedan
      • Type: 4 door sedan
      • Construction: Full-Unibody, high strength steel
      • Dimensions:
        • Wheelbase: 99.4"
        • Length: 173.4"
        • Width: 68.1"
        • Height: 56.7"
      • Curb Weight:
        • Manual: 2965 lb
        • Auto: 3020 lb
    • TS sport wagon
      • Type: 5 door wagon
      • Construction: Full-Unibody, high strength steel
      • Dimensions:
        • Wheelbase:
        • Length: 173.4"
        • Width: 66.7"
        • Height: 58.5"
      • Curb Weight:
        • Manual: 2965 lb
        • Auto: 3020 lb
    • Outback sport wagon
      • Type: 5 door wagon
      • Construction: Full-Unibody, high strength steel
      • Dimensions:
        • Wheelbase:
        • Length: 173.4"
        • Width: 67.3"
        • Height: 60.2"
      • Curb Weight:
        • Manual: 3050
        • Auto: 3105
    • WRX 4 door sedan
      • Type: 4 door sedan
      • Cd:
      • Construction: Full-Unibody, high strength steel
      • Dimensions:
        • Wheelbase: 99.4"
        • Length: 173.4"
        • Width: 68.1"
        • Height: 56.7"
      • Curb Weight:
        • Manual: 3085 lb
        • Auto: 3140 lb
    • WRX 5 door wagon
      • Type: 5 door wagon
      • Cd:
      • Construction: Full-Unibody, high strength steel
      • Dimensions:
        • Wheelbase: 99.4"
        • Length: 173.4"
        • Width: 66.7"
        • Height: 58.5"
      • Curb Weight:
        • Manual: 3165 lb
        • Auto: 3220 lb
    • Suspension

      • Front: MacPherson Strut
      • Rear: Modified MacPherson Strut
      • Steering: Rack and Pinion, engine rpm sensing variable power assist
      • Wheels:
        • TS sport wagon
          • Size: 15"
          • Design: Steel w/ hubcap
          • Stud pattern: 5x100mm
          • Offset:
          • Tire size: 195/60R15
        • RS Sedan, Outback Sport Wagon, WRX model
          • Size: 16x6.5"
          • Design: 5 spoke alloy
          • Stud pattern: 5x100mm
          • Offset: 55mm
          • Tire size: 205/55R16
      • Brakes:
        • RS sedan
          • Front: 10.7" vented two-piston disc
          • Rear: 10.3" solid disc

        • TS sport wagon, Outback sport wagon
          • Front:10.7" vented twin-piston disc
          • Rear: 9.0" drums

        • WRX (both models)
          • Front: 11.4" vented two-piston
          • Rear: 10.3" solid disc

      Safety

      • Front de-powered airbags
      • Side front airbags, seat-mounted: WRX only
      • 3-point lap and shoulder belts with Height Adjustable outboard shoulder harness for all (5) occupants.
      • Internal Trunk Release (sedans), emergency inside-trunk release handle
      • Child seat Tethers, and Uniform Mounting Clips
      • Childproof rear door locks and windows
      • Daytime running lights
      • Crumple zones: front and rear
      • Drop-down motor mounts
      • Dual front, single rear door re-inforcements
      • Anti-lock brakes
    1. 2.5l SOHC H-42002-05 Subaru Impreza Specs & Safety. Consumer Guide Automotive, 2006. (http://auto.consumerguide.com/Auto/Used/reviews/full/index.cfm/id/2548/Act/usedcarreviewspecs/)
      Spitz, Joe. Everything Subaru Impreza 2002 Archives: options, price/cost, colors, specs. Cars101, 2006. (http://www.cars101.com/subaru/impreza/impreza2002.html

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