2010 Subaru Impreza Cosworth WRX STi CS400

The third-generation Subaru Impreza was launched at the New York Motor Show in April 2007 followed almost three years later by the infamous, limited-edition CS400. The performance of the CS400 was 'headline-grabbing' and it was the fastest road-going model ever offered in the UK with a recorded 0-60 time of 3.7 seconds, a standing quarter-mile in only 12.75 seconds and a limited top speed of 155mph, only half a second slower to 60 than the mighty 572bhp Audi RS6.

The CS400 featured a Cosworth-built engine with forged pistons, connecting rods and bearings, heavy-duty cylinder heads, uprated head gaskets and studs, a custom exhaust system and an uprated clutch and carbon synchros, resulting in an output of a very impressive 400bhp. From there, they turned their attention to the car's brakes and handling, fitting Eibach springs, specially-tuned Bilstein dampers all-round, improved chassis bushings, AP 355mm ventilated front brakes with six-piston calipers and lightweight Racing Dynamics Pro-Race 18" alloy wheels. Additional features included Zunsport mesh grilles, Xenon headlights and a leather interior with Cosworth-embroidered logos.

The WRX STi Cosworth CS400, to give it its full title, was the result of one of the most eagerly anticipated automotive collaborations in recent times and was the first genuine Cosworth-developed road car since the Escorts of 1996. They offered spectacular performance combined with exclusivity as only 75 cars were built and the example offered here, number 30 of those 75, is in amazing condition having covered just 12,296 patently cossetted miles. Only three colours were available (Spark Silver, Dark Grey and San Remo Red) and number 30 is finished in Dark Grey, a rather muted hue for a 400bhp Impreza, but pleasingly matches the colour in the original sales brochure in the history file. Also in the file are all the MOT Certificates and the CS400-specific service book which displays nine stamps. The car remains in virtually 'as new' condition, with the interior looking showroom-fresh with plenty of Cosworth branding, the original protective film on the centre console, a set of unused Cosworth mats and even the Cosworth-embossed callipers look brand new, without having experienced a full heat-cycle.

Silverstone Auctions have a record of achieving special prices for rare Imprezas and this true 'collectors quality' example, with its low-mileage and immaculate condition, surely looks irresistible at this guide.