Subaru WRX, VA (USA / CAN)

Coolant capacity & service interval

Subaru WRX, VA (USA / CAN) coolant capacity ranges from 7,7 to 8,4 liters. Service intervals include checks at 30000 miles or 30 months, and changes at 75000 miles or 72 months and 137500 miles or 132 months. The data covers 6 configurations.

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

TypeSpecifications
WRX STI 2.5T (2018-2021)
  • Use: Subsequently
  • Capacity 7,7 liter
  • Check 30000 miles/ 30 months
  • Change 75000 miles/ 72 months
WRX STI 2.5T (2018-2021)
  • Use: First change only
  • Capacity 7,7 liter
  • Check 30000 miles/ 30 months
  • Change 137500 miles/ 132 months
WRX 2.0T (2014-2021)
  • Use: Subsequently
  • Capacity 8,1-8,4 liter
  • Check 30000 miles/ 30 months
  • Change 75000 miles/ 72 months
WRX 2.0T (2014-2021)
  • Use: First change only
  • Capacity 8,1-8,4 liter
  • Check 30000 miles/ 30 months
  • Change 137500 miles/ 132 months
WRX STI 2.5T (2014-2018)
  • Use: Subsequently
  • Capacity 7,7 liter
  • Check 30000 miles/ 30 months
  • Change 75000 miles/ 72 months
WRX STI 2.5T (2014-2018)
  • Use: First change only
  • Capacity 7,7 liter
  • Check 30000 miles/ 30 months
  • Change 137500 miles/ 132 months

Additional Notes

  • The Subaru WRX VA cooling system capacity differs between engine variants. The 2.0T holds 8.1-8.4 liters, while the STI 2.5T holds a fixed 7.7 liters, reflecting the different engine displacements and their respective cooling circuit volumes.
  • The 8.1-8.4 liter capacity range listed for the 2.0T cooling system represents a service fill tolerance rather than a single fixed volume, which is common when air pockets or residual fluid affect the total amount accepted during a refill.
  • Both the 2.0T and the STI 2.5T share an identical coolant check interval of every 30,000 miles or 30 months, regardless of engine type or model year.
  • The first change only interval for both engine variants extends to 137,500 miles or 132 months. A first change interval of this length typically reflects factory-fill coolant formulated for extended initial service life before the standard recurring schedule takes effect.
  • After the first change, the subsequent change interval drops to 75,000 miles or 72 months for both the 2.0T and the STI 2.5T. The gap between the first change interval and all subsequent ones is roughly 62,500 miles or 60 months.
  • The STI 2.5T cooling system capacity of 7.7 liters remains consistent across both the 2014-2018 and 2018-2021 model year groupings, indicating no change in cooling circuit volume between those two specification entries.

Other Systems