It was a fair bit of work but was done over months and months of salivating over internet ads, comparing this car with that car, deciding whether to buy cheap and high mileage or expensive and low mileage, and so on and so forth, just waiting for the money to come in (stock options!). So it was hardly a chore! In fact, I really enjoyed getting a grip on 550 ownership costs (and particularly finding out I could afford it!! ) - it was a little bit like I owned the car already. Onno BTW - if anyone has better estimates on costs, or changes it to US units, update it and post it here!