Subaru Impreza WRX Type RA STi Ver.VI

Mechanically the GC8F was virtually the same as its predecessor. The torque was increased a little from 242 to 250 lb⋅ft (328 to 339 N⋅m) at 4000 rpm. The weight also continues to increase and is set at 1,300 kg (2,800 lb).

To celebrate the return of British driver Richard Burns to the rally team, a limited edition of 444 Turbo 2000 "RB5" models in gray were created in 1999 for the UK. The basic model had little more than cosmetic differences, but most had the WR Sport Performance Pack, an option consisting of a new ECU and exhaust for 240 PS (177 kW; 237 hp) and 350 N⋅m (258 lb⋅ft) torque. There was also an optional Prodrive suspension pack.

The standard UK Impreza Turbo 2000 was also tuned and partly restyled by Prodrive in 1999 to create the "Prodrive WR Sport". It featured a unique interior, suspension upgrade, new bodykit and wheels, plus WR Sport decals and an optional ECU upgrade.

For the STI, the power stayed the same as the previous version but the engine layout and design was made cleaner and was dubbed as the "Boxer Phase 2" engine. The facelift the rest of the Impreza line had was also applied to the STI. The WRX STI weighed 1,270 kg (2,800 lb). There were 1000 WRX Type RA STI Version 5 Limited cars and each had a four-month waiting period. The interior was also changed slightly, including seats and steering. This model was also produced as a 555 limited edition.