English tuner Cosworth has given the Subaru
Impreza STi CS400 a tuning only for the UK market. The end result is a much faster overall performance over the standard STi. Under the hood, the Impreza STi CS400 will generate its power from the familiar 2.5-liter turbo engine that has been increased to produce an output of 395hp and 398 lb-ft of torque. The STi CS400 can accelerate from 0-62 mph in just 3.7 seconds and has a top speed of 155 mph.