Subaru WRX STi Specs, Engines & Dimensions (2017–2021) — First Generation Restyling
The restyled first-generation Subaru WRX STi sedan sharpens a rally-bred formula: a turbocharged boxer engine, permanent all-wheel drive and a driver-focused cabin, wrapped in a four-door body that still works for everyday use.
The Subaru WRX STi engine is a turbocharged flat-four, represented here by the 2.5 MT sedan running on gasoline. Its powertrain pairs a manual gearbox with all-wheel drive, so the low-mounted boxer layout keeps the centre of gravity down while the drivetrain spreads torque across all four wheels.
Subaru WRX STi trim levels sit on top of that mechanical package rather than changing it. The 2.5 MT version is offered as Standart and Premium, with the higher grade typically adding comfort and interior equipment. Check the specification cards for each car, since equipment varied by market and build year.