Ian Royle gives us a review of a 2003 model Subaru Impreza STi, as he'll be finding out if it's the ultimate in performance and practicality. The Impreza STi's official figures state that it produces around 260bhp, but some tests have shown that it's closer to 300bhp, nevertheless it is capable of doing over 150mph, and a 0-60 time of just 5 seconds.