Boy racer' and 'accountant' aren't generally words that sit comfortably together. But for KPMG audit partner John Leech, being a bit of a petrol head certainly hasn't done his career any harm. As head of automotive at KPMG, being able to wax lyrical about the four Subaru Impreza turbos he has owned over the years offers some relief from navigating the complex accounting issues plaguing the sector and advising some of the biggest names across both car manufacturing and dealerships in the UK.