As one of the most enduring and best-selling cars in history, the Volkswagen Beetle has been through a world war, several redesigns and an identity crisis since its 1938 debut. The German automaker revived the model in the late 1990s with the name New Beetle. Since a 2012 redesign, however, it is known simply as the Beetle.
Just a year later, more advancements arrived in the form of a convertible and turbo-diesel TDI models. The latter uses the same engine offered in the Beetle's well-established siblings—the Jetta and Golf—and offers the best gas mileage in the three-Beetle lineup: 41 mpg on the highway.