Yes, different strokes, for sure. The BMW i3 is growing on me, but the first time I saw one it was a shock. The next time, less of a shock, and now I accept it is a design that works - for me, I must qualify.
But at first glance it was a shock. See here, of the two, what is uglier?
They look good if you understand the underlying aerodynamics. It’s a truncated teardrop shape, aka Kammback. The moderate slope creates a converging air flow, and the air keeps moving as if there were a solid tail. It’s more streamlined than a conventional sedan or a more sharply tapered back end. Which is why cars optimized for fuel efficiency (Toyota Prius, Honda Insight, etc) have the same design.
Two manufacturers that spring to mind are SsangYong, who made a succession of odd-looking vehicles like the Rodius, Musso, and Korando, and Skoda, whose Fabia is the frumpiest thing on wheels, while the Roomster just looks like a miniature hearse.
Well, since I got multiple-ninja’d on the actual ugliest vehicle (PT Cruiser), I’ll take you on a trip down memory lane and submit for a dishonorable mention the AMC Pacer.
Actually, vehicle weight has steadily increased since about 1980, while fuel economy and HP have improved. Cars have improved in nearly every way over the past 30-40 years.
Any Ford sedan right before they introduced the Taurus. I envision a room full of designers sitting around saying, “I got nothing. Nothing at all…you?” Then they just grabbed design elements at random, threw them together, and went to the bar.