Graduate school, the Audi died of rust, what's a guy to do?
Besides, other than being a cheapo (mine was an 82, the later ones were much nicer) it wasn't a bad car. 36+ mpg on the highway, 167,000 miles before the floor fell out (those three years in Canada were pretty rough on it!), went everywhere and the only work I did on it was the carb (vacuum line for the brake booster wouldn's stay in), the AC condesner perforated in Canada, the radiator fins corroded off (also in Canda), a fuel pump, a brake booster, three manifold pressure sensors, a starter, a timing belt, and brakes. Not bad for 5 years of ownership and 97,000 on it when I bought it.
Seats were for sh..., the doors leaked and and I nearly froze to death on a winter trip, but it ran and ran and ran. Made with any quality to the parts and decent seats, and I would still be driving it!
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!