74K, or there abouts on my 16v

A slight deviation here, at work, we regulary serviced a Peugeot 607 HDi, used by a Taxi firm, for airport runs, about 4yrs ago, the mileage went back to zero, after completeing 500K!!! three months ago, the same car was written off, after someone pulled out on the driver, the mileage was 480K!! grand total, 980K, all that ever went wrong with the car in that time, was a blown up turbo, due to the catalyst being blocked, (apart from usual service items)
Tom