"The entire car has all these curves, circles and arches, and then the rear end just stops. Abruptly. With no explanation." There's also the fact that it resembles a snail, with a name that sounds suspiciously like "escargot." We see what you did there, Nissan.
Isuzu Vehicross (1999-2001)
About a decade before it decided to leave the U.S. market, Isuzu tried to give buyers an SUV that looked distinctive, fun, and a touch futuristic. The result was the VehiCross, a limited-edition vehicle that inspired both cheers and jeers. While it snagged a decent enough review from Motor Trend (though they do call the VehiCross "a Toyota RAV4 on high-potency steroids," others pulled few punches. "No one wants a three-door SUV that looks like an escapee from the set of 'Battlestar Galactica,' " deadpans Car and Driver.
Cadillac Seville (1981-1985)
The redesigned Cadillac Seville was supposed to help GM mark the start of the '80s in head-turning style. It certainly got people to look, if only to do a double-take when they realized just how ugly a Caddy could be. Designed with a retro "bustle back," the new Seville notched disappointing sales, likely because the engine was just as bad as the design. "A near-perfect synthesis of wretched design and ruinous engineering," Curbside Classic concludes. Tell us how you really feel.
Citroen AMI 6 (1961-1970)
French automaker Citroen desperately needed a midrange car that would hold its own against competitors like Renault in the '60s. Instead, it churned out the Ami, with an oddly raked back window that didn't exactly appeal to buyers. According to Motor Trend, this was actually a cost-cutting move because the trunk lid could be attached up there to stay open, no prop rod or counter springs necessary. Whatever the case, the result was "the most ungainly design ever."