1938 · 🇩🇪 Germany · 30 hp
The late-1950s Volkswagen Beetle used a rear-mounted air-cooled 1192cc flat-four producing around 30 hp. Built under Ferdinand Porsche's original pre-war KdF-Wagen concept, the oval-window era transitioned to a larger rear screen by 1958, making this a highly sought split/oval-successor variant.