2013 Mercedes-Benz E400 Hybrid system is an evolution of the larger S400’s setup (as opposed to the more complex unit in the last-gen ML450 hybrid). The S-class pairs a 275-hp, 3.5-liter V-6 with a 20-hp electric motor, while the 2013 Mercedes-Benz E400 Hybrid gets a 302-hp, direct-injection, 3.5-liter V-6 and a 27-hp electric motor.
