1999 SUBARU Impreza EJ15/EJ16 (GC/GF)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Head gasket leaks especially in higher mileage EJ20 engines
• Timing belt wear
• Rust in some climates

First checks

• Verify timing belt condition and replacement history
• Check for head gasket leaks
• Inspect suspension and wheel bearings

Vor dem Teiletausch

• Save fault codes and freeze-frame data before clearing anything.
• Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
• Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.

Important notes

• Engine and specification vary significantly by market; North American versions usually have EJ25 variants starting from late 1999 model year but primarily EJ22/EJ20 before that.
• Transmission and feature availability differ between sedan, hatchback, and wagon body styles.