According to the Haynes manual the Manual Transmission needs an oil change every 48,000 miles or 4 years, the handbook I got with the car says 75,000 miles or 6 years (Except EU), and the service book that came with the car (the one with the dealer stamps in it) says 75,000 miles or 8 years. It says the same for AT, so as I assume that is the i-shift, as it also gives numbers for the CVT.