Old cars. The problem is the lack of modern safety features which really makes me do a double take before considering them. I wish cannibalizing a new car and ripping out all of the useless electronics was common enough for there to be tutorials for some brands
Late 90's saab 9000's have TCS, ABS, Dual Air Bag, so your standard set of 2000's features, and are also very safe.
Unfortunately there seems to be a lack of good crash test data publically on older (older than 2004) cars.
I drive a 2007 base model Porsche 911. No GPS, manual transmission, built to crash with ABS, traction, airbags, cage.
Otherwise the rocker panels just rot out so quickly, and they are wicked expensive to get replaced. I was quoted almost $4000 to fix mine on my last vehicle (only 100k miles, otherwise near perfect condition), so I could get an inspection sticker. So I traded it and put that money down on a new one instead...