Mercedes-Benz S400 Hybrid is a luxury hybrid sedan that is powered by a 3.5-liter V6 engine, an electric motor, and a lithium-ion battery pack. The car combines performance, luxury, and fuel efficiency. It produces a total of 328 horsepower and can accelerate from 0-60 mph in 6.2 seconds. The car also has a fuel economy rating of 30 mpg combined. The S400 Hybrid provides a smooth, comfortable ride with a quiet, luxurious interior.