
Bad driving habits can damage a car in a couple of months, not 6 years.

If that were not the case, everyone would be driving fleet rental re-solds...

And while you are considering things (factors in stat terms), how about
city vs. highway driving ratios, owner vs. dealer service, extreme weather
or environment, adherence (sp?) to maintenance schedules, whether the car
has ever been in an accident, number of different drivers of the same car
in a family, whether the car is garaged, warmed up, ...

Spiros