1938 · 🇩🇪 Germany · 46 hp
By 1973, the Type 1 Beetle ran a 1.6-litre air-cooled flat-four producing around 46 hp, with a torsion-bar suspension and rear-engine layout unchanged in concept since Ferdinand Porsche's original KdF-Wagen. The most-produced car in history, it defined affordable post-war motoring globally.