Is a V12 bigger than a V8?
However, the V12 engine is usually longer than V6 and V8 engines. The added length often makes it difficult to fit a V12 engine into a passenger car, but the length is not typically a problem for trucks and stationary applications. If “faster” means capable of running at a higher RPM, it would be almost categorically true to say that all V12 engines are “faster” then any V8s. If referring to top speed of the cars the engines are installed in, again it would be nearly true to say that all V12 cars are faster than V8s.