A V5 engine is a five-cylinder piston engine where the cylinders share a common crankshaft and are arranged in a V configuration.
Even compared to the fairly rare straight-five engine, V5 engine designs are very uncommon. The first production V5 was the 1997–2007 Volkswagen Group VR5 engine. It is arguably not a true V5 engine, as all the cylinders share a single cylinder head. However, Honda produced a true V5 motorcycle racing engine, used in the RC211V.