“It’s not the Pinto or Mustang II. Not by a long shot. That’s just feeding urban legends.
“Controversial choice is the Model T.
“Yes... it’s an important car, established production lines, and brought the car to the masses cheaply. But it was also difficult to use and they were meant to be maintained and fixed regularly. You could do it....it’s not like fixing a car today. If you had the knowledge and tools to do so. You were generally on the hook for re-manufacturing replacement parts on your own, or having a shop do it. Flat tires were common - like every 50 miles common - but comparatively speaking, you were still going WAY farther than you did previously. Some will also argue that it was what set the mentality of ‘I need to go anywhere!’ that’s a problem for adoption of other transportation methods in North America.
“Less controversial choice is any late 70's, early 80's GM with the Oldsmobile 5.7 diesel.
“GM’s interior/exterior ‘quality’ paired with one of the worst engines of all time? Yeah, that’s WAY worse than the Pinto (which sold well, raced well, and wasn’t anywhere near as fire-y as people think). Quickly converting a gas engine to diesel simply didn’t work. Couldn’t handle the compression, and it failed. A LOT. I’m shocked that it was in cars as long as it was really. The best quote on this was from a GM engineer: ‘In test after test, we had broken crank shafts, broken blocks, leaking head gaskets and fuel pump problems.’ But GM forced it out because they had to lower fleet fuel economy.”
Ouch, I burned myself on this hot take.