Got my car in January on 32k miles, now it's sitting on 41k. Normally I would be thinking about an oil change after this sort of mileage (car gets worked quite hard, I might add) but the car reckons it's another 10k miles away! Just seems wrong that the car should go 20k miles without an oil change. Would be interested to know how often you should actually do an oil change on an N18 car because 20k seems to long for me.