Definitely Second the Volare/Aspen. I owned one, and hated the fershlugginer thing. I'd also nominate the first generation Cadillac Northstar V-8. They have a fault where if the engine loses coolant, the heads crack because the material is too thin around the head bolts. Sadly, the material was so thin as a safety feature to allow the engine to cool IN CASE OF coolant loss. It was meant to act as air cooling. Had a Deville Concours. Phenomenal car, otherwise, but once the water pump blew it was junk. It still ran great, but it wouldn't hold coolant anymore.