The displacement of an engine is the total volume of all of the cylinders in the engine. Measured in cubic centimetres (cc)✕

ICE engines have one or more cylinders. More cylinders typically mean more smoothness and more power, but it also means more moving parts and less fuel efficiency.✕

The number of intake and exhaust valves in each engine cylinder. More valves per cylinder means better engine breathing and better performance but it also adds to cost.✕