The Hybrid Synergy Drive developed by Toyota integrates the desirable elements of a petrol engine and an electric motor. It uses the spontaneous high torque from the electric motor from rest for starting. For cruising in the high-speed range, it utilizes the efficient power of the petrol engine. The management system carefully selects the optimum combination of the petrol engine and electric motor in order to maximise fuel efficiency and reduce emissions. Image shown for illustration purposes only.