Subaru Cosworth Impreza STI CS400 (2010): more details

Subaru has revealed more details (and more teaser pictures) of its Cosworth-tuned Impreza. Called the Cosworth Impreza STI CS400, Subaru promises its four-wheel drive hot hatch will have ‘supercar-humbling pace’ and, presumably, be quick enough to match the Mitsubishi Evo X FQ-400 too.

Near enough – this Cosworth-tweaked Impreza has 400PS. That translates to 395bhp (produced at 5750rpm), a significant increase over a regular WRX STi’s 296bhp (at 6000rpm). The extra power also means the standard car’s 5.2sec 0-62mph is slashed: Cosworth is claiming an incredible 3.7 seconds for the benchmark sprint.

The rest of the Subaru Impreza WRX STi has been upgraded too, and top of the list is a bespoke brake conversion from AP Racing offering 355mm discs with six-pot callipers up front. Cosworth promises that ‘a wide range of further upgrades have been made to the suspension, exhaust and to the donor Impreza's exterior and interior styling’ so the CS400 won’t be all about the extra power.

The Subaru Cosworth Impreza STI CS400 was originally set to go on sale this month but it’s been delayed until June. Just 75 cars will be produced and prices should start around £40k.

By Ben Pulman