Subaru WRX STI Maintenance & Service Specifications
Your vehicle
2021 Subaru WRX STI. Values below are stored catalog specifications. This catalog does not include a manufacturer service interval.
Engine EJ257 Turbo
Available for 2021
- Oil specifications
- Battery specifications
- Wiper sizes
- Tire sizes
Stored catalog coverage: 4 of 4 categories.
Engine oil
Capacity and grade are stored per engine. They are not a mileage interval, and viscosity is not inferred from capacity.
| Engine | Capacity | Grade | Coolant | Drain plug |
|---|---|---|---|---|
| EJ257 Turbo | 4.5 qt | 5W-30 | 8.1 qt | 34 ft-lb |
Oil filter identity is not stored in this catalog.
Catalog engine oil for this year
No catalog oil title matches 5W-30.
Battery
Group, CCA, and stored dimensions are listed per engine. A matching group is not a complete fitment proof.
| Engine | Group | CCA | Stored size |
|---|---|---|---|
| EJ257 Turbo | 26R-3 | 575 | 8.19 × 6.8 × 7.75 |
| EJ257 Turbo | 35-2 | 640 | 9.06 × 6.875 × 8.875 |
| EJ257 Turbo | 35-AGM | 650 | 9.06 × 6.875 × 8.875 |
Catalog batteries for this year
No catalog battery title matches group 26R-3.
Wiper blades
- Driver
- 26 in
- Passenger
- 16 in
- Rear
- Not stored
- Attachment
- Hook (9x3)
Catalog wiper blades for this year
No catalog blade title lists the stored driver size.
Tire sizes
Tire pressure is not stored. Use the placard on the vehicle.
- 245/35R19
- 245/40R18
- 255/30R20 · load 96 · speed Y
Service timing
Exact service intervals are not stored for the Subaru WRX STI. Do not read an oil capacity or battery group as a mileage schedule. Confirm timing in the owner's manual or the vehicle maintenance monitor.
What each year stores
| Year | Oil | Battery | Wipers | Tires |
|---|---|---|---|---|
| 2021 | Stored | Stored | Stored | Stored |
| 2020 | Stored | Stored | Stored | Stored |
| 2019 | Stored | Stored | Stored | Stored |
| 2018 | Stored | Stored | Stored | Stored |
| 2017 | Stored | Stored | Stored | Stored |
| 2016 | Stored | Stored | Stored | Stored |
| 2015 | Stored | Stored | Stored | Stored |
Frequently asked questions
What maintenance information is available for this Subaru WRX STI?
Catalog records for the 2021 Subaru WRX STI include engine oil, battery, wiper blades, and tire sizes. These are stored specifications, not a manufacturer service interval.
What is the oil capacity on a 2021 Subaru WRX STI?
Catalog records list 4.5 qt of 5W-30 for the EJ257 Turbo.
What oil grade is stored for a 2021 Subaru WRX STI?
Catalog records list 5W-30. Grade can differ by engine, and this catalog does not turn a grade into a change interval.
What coolant capacity is stored for a 2021 Subaru WRX STI?
Catalog records list 8.1 qt for the EJ257 Turbo. Coolant type is not stored here.
What battery size does a 2021 Subaru WRX STI use?
Catalog records list battery group 26R-3, 35-2, and 35-AGM.
What are the wiper sizes on a 2021 Subaru WRX STI?
Catalog records list driver 26 in, passenger 16 in. A rear blade size is not stored for this year.
What tire sizes are stored for a 2021 Subaru WRX STI?
Catalog records list 245/35R19, 245/40R18, and 255/30R20. Tire pressure is not stored. Use the placard on the vehicle.
Does maintenance data change by model year on a Subaru WRX STI?
Yes. This page keeps one model URL and loads the stored specifications for the year you select. The default year is the latest catalog year that has maintenance specifications.
How do I match engine oil for a 2021 Subaru WRX STI?
Select the engine, because capacity and grade are stored separately. A catalog oil product is shown when it is mapped to this model year and its title contains that engine's stored viscosity. Manufacturer oil-approval specifications are not stored, so a title match is not an approval.
What is the maintenance interval for a Subaru WRX STI?
This catalog does not store a manufacturer maintenance interval for the Subaru WRX STI. Confirm service timing in the owner's manual or the vehicle maintenance monitor. Capacities and sizes on this page are not a mileage schedule.
What should I verify before buying parts for a Subaru WRX STI?
Match the model year and, when the catalog lists more than one engine, the engine. Oil grade, battery group, and wiper position are separate values. A catalog product mapped to the vehicle is not a claim that every engine uses that product.