2021 Subaru Ascent
30,000 mile service checklist
Here's exactly what your factory maintenance schedule calls for at this mileage — and what each item typically costs.
30,000 mile service
- Engine oil and filter change (0W-20 full synthetic)
- Tire rotation
- Replace engine air filter
- Replace cabin air filter
- Inspect spark plugs — factory-spec iridium; turbocharged FA24 typically calls for earlier plug service than naturally-aspirated FB engines due to higher cylinder pressures — inspect at 30k, plan to replace by 60k
- CVT fluid (HP CVTF) change recommended under severe-duty conditions (towing, mountain driving, frequent stop-and-go); inspect-only under normal use
- Replace rear differential gear oil
- Inspect brake fluid — replace if moisture-contaminated
- Inspect coolant condition — Subaru Super Coolant (long-life)
- Inspect turbocharger wastegate actuator and boost control solenoid operation