This is Subaru's ultimate incarnation of the road-going Impreza, fettled by Cosworth to produce 395bhp and offer supercar-rivalling acceleration.
The Cosworth Impreza STi CS400 can get from 0-62mph in just 3.7sec, matching a Lamborghini Gallardo LP560-4 and beating the Ford Focus RS’s time by more than two seconds. Top speed is limited to 155mph.
The standard STi’s 2.5-litre turbo engine gets high-performance pistons, high-strength steel conrods, Cosworth-spec engine bearings, a redesigned head gasket and a high-pressure oil pump. The turbocharger has also been modified, with a new compressor design and wastegate actuator.
A Cosworth-designed exhaust system and a remapped ECU complete the revisions, which also boost torque to 398lb ft.
The chassis is a joint effort between Cosworth, Bilstein and Eibach. The Impreza gets new coil springs and its ride height is 10mm lower. The front brakes are larger (355mm) AP
Styling tweaks include a new front bumper, foglights, mesh grilles and rear spoiler, and new 18in alloy wheels that help to widen the tracks by 12mm.
Inside, there’s a piano black centre console, privacy glass and new Recaro front seats.
Just 75 examples of the car will be made, all in right-hand drive and purely for the UK market. It
’s available in just three colours: silver, dark grey and red.
The car will also be comfortably the most expensive road-going Impreza yet, at ú49,995.