Subaru WRX, VA (USA / CAN)

Differential fluid capacity & service interval

Subaru WRX, VA (USA / CAN) differential fluid capacity ranges from 0,8 to 1,4 liters. Service intervals include checks every 30000 miles or 30 months and changes every 15000 miles or 15 months. The data covers 8 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
  • WRX STI 2.5T (2018-2021)
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Check 30000 miles/ 30 months
  • WRX STI 2.5T (2018-2021)
  • Rear
  • Use: Severe
  • Capacity 1 liter
  • Change 15000 miles/ 15 months
  • WRX 2.0T (2014-2021)
  • From CVT
  • Use: Normal
  • Capacity 1,4 liter
  • Check 30000 miles/ 30 months
  • WRX 2.0T (2014-2021)
  • From CVT
  • Use: Severe
  • Capacity 1,4 liter
  • Change 15000 miles/ 15 months
  • WRX 2.0T (2014-2021)
  • Rear
  • Use: Normal
  • Capacity 0,8 liter
  • Check 30000 miles/ 30 months
  • WRX 2.0T (2014-2021)
  • Rear
  • Use: Severe
  • Capacity 0,8 liter
  • Change 15000 miles/ 15 months
  • WRX STI 2.5T (2014-2018)
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Check 30000 miles/ 30 months
  • WRX STI 2.5T (2014-2018)
  • Rear
  • Use: Severe
  • Capacity 1 liter
  • Change 15000 miles/ 15 months

Additional Notes

  • The Subaru WRX VA (USA/CAN) 2.0T carries a front differential fluid capacity of 1.4 liters in the unit sourced from the CVT assembly, while the rear differential on the same engine holds a smaller 0.8 liters, reflecting the differing physical sizes of the two housings.
  • Under normal use conditions, both the CVT-sourced front differential and the rear differential on the 2.0T are scheduled for a fluid check at 30,000 miles or 30 months, whichever comes first, rather than a mandatory change.
  • Under severe use conditions, the interval shifts from a check to an actual fluid change, with both the front CVT differential and the rear differential on the 2.0T requiring service at 15,000 miles or 15 months.
  • The rear differential on the WRX STI 2.5T holds 1.0 liter of fluid, which is 0.2 liters more than the rear differential capacity on the 2.0T, indicating a physically larger or differently designed differential unit in the STI variant.
  • The WRX STI 2.5T rear differential follows the same interval structure as the 2.0T rear differential, with a check at 30,000 miles or 30 months under normal conditions and a change at 15,000 miles or 15 months under severe conditions.
  • The 2014-2018 and 2018-2021 WRX STI 2.5T rear differential specifications share identical capacity and interval values at 1.0 liter, 30,000 miles or 30 months for normal use, and 15,000 miles or 15 months for severe use.

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