So far we are using internal combustion engines where combustion of fuel and air produces useful mechanical energy. This kind of engines usually has several drawbacks mainly the compression ratio is unique so the pickup of the engine cannot be improved. The revolution in car engine has finally arrived. This engine is turbocharged with directly injected gasoline/E85 that provides variable compression ratio. Hence the variations in the performance have been achieved. This engine is just like the delivery truck fitted with some hybrid hydraulic system so fuel efficiency can be attained. Also this engine represents the state-of-art engine for fuel efficiency.