Gas Subaru Impreza maintenance (all generations)
All Subaru Impreza generations covered here use gas engines, spanning naturally aspirated and turbocharged options such as FB20 and EJ-series engines (EJ18, EJ22, EJ25 variants). Routine oil and filter changes are the foundation of the schedule, but the best interval can vary by model year and engine, so it’s worth confirming against the plan for your exact selection. Turbo models (for example WRX/WRX STI engines like EJ205, EJ255, and EJ257) typically benefit from extra attention to oil condition and any signs of intake or boost leaks between services. Across the range, also keep an eye on fluid levels and under-hood rubber hoses, as age and heat cycles can affect seals and lines over time.