'72 Mercedes sedan. I was clueless about cars and had no idea how to maintain them. I don't recall if I ever put oil into it, and it gave up the ghost after a trip to the Adirondacks about two years into my ownership. I imagine the engine was one fused chunk of metal the next morning when I tried to start it and it said, "Click," very feebly.
First car I bought myself was a used '86 Toyota Tercel wagon, 4-wheel drive, from a small private dealer in Ithaca. Wanted to learn to drive a stick so I bought one. That car was a tank. Drove it with reckless abandon up unplowed access roads into the high peaks trailhead lots and never once got stuck. Great for sleeping on hiking trips, too, with the rear seats folded down.