My 61 Rambler Classic. Bought from the original owner who bought it when he was 71.
Had only 25k miles on her when I bought her in 1976. Included receipts for 25 oil change/lube/tire rotations, all done by the same guy.
I put over 100k miles on 'er in just over two years. Had to replace the head (aluminum!) and re-attach the manual tranny (every bolt had managed to vibrate loose

). That was it repair wise.
Got over 30mpg, had enough room inside to carry 6 dining room chairs, and the trunk was big enough to carry a disassembled dining room table. With the trunk lid closed. Front seat was a full bench that was split - both halves reclined to damn near flat. For sleeping.
Sold it for $300; $70 more than I'd paid for it. Have regretted it ever since.
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1961 220b: first project car - sold.
2000 CLK 430: first modern Benz - sold.
2001 CLK 55: OMG the torque!!! - sold
1972 280SE 4.5: Baby Gustav
1991 300TE 4Matic: Gretel the Snow Bunny - sold
1978 300SD: Katz the Free Man - given away
1980 Redhead: Darling Wife