17. Original Smart Fortwo
Smart Cars is a subdivision of Daimler, so one could assume that they know what they’re doing and while they may not get it right every time, they’ll at least deliver a passable product with good engineering and solid construction. You’d think that, until you ran into the Smart Fortwo. The obvious problems are obvious: the rear-mounted engine and fore-mounted cooling system means that a lot of heat passes under the passenger cabin. On a warm day, this can effectively cook the folks riding inside—not a recipe for comfort. Despite its ultra low emissions and gigantic fuel efficiency—this is the first car on the list to offer a hybrid variant—the problems with the first round of Fortwos were legion and nearly killed the Smart brand altogether.