The automotive division of Fuji Heavy Industries Ltd, Subaru displayed the new performance versions of the Impreza, at the 2008 British International Motor Show in ExCel, London. Targetted mainly at a sporting audience, all models receive engine and styling upgrades from Prodrive, which runs Subaru's World Championship-winning rally team.
The new Impreza WRX-S model has been re-designed with modifications in the 2.5 litre 'boxer' engine's ECU (electronic control unit) and the exhaust system system. This enables power leap from 230 PS at 5,200 rpm to 255 PS at 5,400 rpm while the torque improvement is even greater, growing from 107kg - ft at 2,800 rpm to 130.4 kg -ft at 3,000 rpm - a staggering 23kg - ft more.
The improvement is reflected in the speed as the the 0-60 mph time drops from 6.1 seconds to 5.5 seconds, though maximum speed remains at 130 mph. Naturally, in-gear flexibility is greatly enhanced.
The new Impreza WRX-S also boasts 18x7.5 inch anthracite GT1 alloy wheels with 225/40 tyres, an STI front grille, STI front lip spoiler and STI rear wing and body-colour tailgate moulding.
The second Subaru model on display at the show is the Impreza WRX STI 330S, which is fitted with a modified ECU and a 90mm stainless steel exhaust tips. Power is up from 298 to 325 hp, and 157kg - ft of torque is available from 3,400 rpm. The package cuts-out four-tenths of a second from the 0-60 time, bring the sprint down to 4.4 seconds, and includes five-spoke 18x8.5-inch wheels coated in 245/40 rubber.
The luxurious interiors sport front seats from German based manufacturer Recaro, with standard features such as satellite navigation and push-button start.
The WRX STI 380S concept with a 375 hp, is expected to go on sale within six months, according to the carmaker. Subaru has not released any hard details on the concept.
Also showcased is the new diesel version of Subaru's Legacy, making its UK debut at the Show. Subaru's first ever diesel passenger car is rather special, built in Boxer form with the two banks of cylinders facing each other. This produces a very compact, lightweight unit that can be placed very low in the car, aiding both handling and fuel economy.
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