My A4 has full audi service history, ALL the right toys and bar a thermostat has never gone wrong.. However, the mileage is now approaching 88k and although I think she has many more trouble free miles in her - the value drops off massively after the clock turns 100k.. So should I sell it soon and maximize my return to put towards another car with less miles, or, enjoy the trouble free running of a car I very much like for another couple of years? However, in 2-years from now the car will have approx 110k miles on the clock and only be worth maybe 3k. I know all cars depreciate - but the biggest hit is usually taken by the owner who carries the car over 100k.. Or, should I just stop worrying and keep driving a good, reliable, car?