Just joking, but me it was the 2002 Ford Explorer and its endless problems with the transmission, the wheels, the windows and everything else that could go wrong.
Just looking at carcomplaints can show you the size of the problem, with 1,500 reports of transmission problems alone.
I see your Ford Explorer and raise you one GM J-Body (Chevrolet Cavalier, Pontiac Sunfire, Cadillac Cimarron).