Seeing the official pictures and reading thought the details on the S400 BluHYBRID is one thing, but seeing the S400 in action is another. Check out the trailer and see how the 3.5-liter gasoline engine, which develops an output of 279 hp / 205 kW, and the electric motor, which generates 20 hp / 15 kW and a starting torque of 160 Nm, work together in harmony.