The 2021 WRX STI range consists of two models: the base STI, and the STI Limited. Both of them are powered by a turbocharged 2.5-liter flat-four engine with 310 hp and 290 lb-ft. A six-speed manual gearbox is the only transmission option, and Subaru's symmetrical all-wheel-drive is standard fitment. The base STI has 19-inch alloy wheels, daytime running lights, and LED headlights. On the inside, it has manually-adjustable Ultrasuede/leather sports seats, dual-zone climate control, STI gauges, and keyless entry with push-button start. The standard infotainment system has a seven-inch touchscreen with HD Radio, Apple CarPlay, and Android Auto. The STI Limited adds Recaro front seats with eight-way power adjustment for the driver, navigation, a nine-speaker Harman Kardon premium sound system, a power moonroof, blind-spot detection, lane-change assist, and rear cross-traffic alert.
On the base STI, there is one optional package which retails for $2,250. It only adds the Recaro performance front seats with eight-way power adjustment for the driver. There's only one optional package for the STI Limited and it's the low profile trunk spoiler. It's a no-cost option, and one you should tick if you like seeing out of the rear window. There are a few standalone options you can spec, including an Ultrasuede steering wheel ($499), an STI-branded shift knob ($185), and an auto-dimming mirror with a compass and Homelink ($359).