1996 Honda Civic - 10 years
Only money I put into that car besides standard maintenance was for new tires, repaired CV joints, and some new piping in the exhaust system where it rusted out. I would still be driving it if my mom's car didn't break down recently.
Hopefully the new 330i I ordered (currently sitting at the port of Bremerhaven) will be as troublefree. I plan on owning it for the next 10 years.