Well after looking, there aren't any good reliable sources for an easy number. But comparing what state data I could find, it seems like 12 years and 200k milea

Well after looking, there aren't any good reliable sources for an easy number. But comparing what state data I could find, it seems like 12 years and 200k mileage is the median. So I maintain my original statement. 8 years and 150k miles for a car that is sold as a simpler (mechanically) and more reliable because of that mechanical simplicity is kind of crappy.