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DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Subaru WrxOil Type & Capacity
OEM spec from the factory service manual for the Base variant.
Quick Answer
Oil Type
$API SN or SM, ILSAC GF-5 or GF-4 SAE 5W-30 Synthetic Oil Specified
Capacity (w/ Filter)
5.40 QTS.
5.11 L
Variant
Base
Note: If 5W-30 synthetic oil is not available, 5W-40 conventional oil may be used if replenishment is needed but should be changed to 5W-30 synthetic oil at the next oil change.
This vehicle's factory manual
2021 Subaru Wrx: confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Sister site: See this spec on WhatTypeOfOil.com — our quick oil type & capacity lookup for every vehicle.
What You'll Need
Related for Your 2021 Subaru Wrx
Frequently Asked Questions
- What type of oil does a 2021 Subaru Wrx take?
- The 2021 Subaru Wrx requires API SN or SM, ILSAC GF-5 or GF-4 SAE 5W-30 Synthetic Oil Specified. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Base configuration.
- How much oil does a 2021 Subaru Wrx need?
- The 2021 Subaru Wrx takes 5.40 QTS. (5.11 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 2021 Subaru Wrx?
- Yes — synthetic oil that meets the API SN or SM, ILSAC GF-5 or GF-4 SAE 5W-30 Synthetic Oil Specified specification is acceptable and often preferred for better protection and longer change intervals.
- What happens if I use the wrong oil in my 2021 Subaru Wrx?
- Using oil that does not meet the API SN or SM, ILSAC GF-5 or GF-4 SAE 5W-30 Synthetic Oil Specified specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.