How much displacement does a cylinder of a benzine burning, 4 stroke otto engine need to function? Many engines with large number of cylinders are big engines. But not all are. For example, the early, 1950s Ferraris have just 2 l displacement for V12. Just 166 ccm per cylinder. How would the performance of a 2 l Ferrari V12 compare against a 2 l ordinary straight-six or flat-four? And how would the space taken up by the engine compare? BRM built a V16 racing car with under 1,5 l displacement. Just 93 ccm per engine. Would you prefer a 1,5 l V16 or a 1,5 l inline four?