I'm coming out of NPOCP retirement for this one; sure, Graverobber's being doing a helluva job, but after reading The Rise And Fall Of The Worst Car In History, I feel compelled to put this dilemma to a vote.

As author Jason Vuic points out in The Yugo's introduction, the Yugo wasn't really the worst car in history. How did it capture the role of Worst Car Ever in the mind of most Americans? This excellent book explains all!