A lot of work has been done on achieving low consumption and emissions for the V-Class. The savings of the top-specification V 250 d engine compared to the V6 engine of the Viano are impressive: Through downsizing, the 4-cylinder engine uses around 2 litres less per 100 km, but with comparable torque.
The V-Class has the following BlueEFFICIENCY measures on board as standard:
The standard BlueEFFICIENCY package measures implemented on the drive system and the aerodynamics have improved the consumption figures and CO2 emissions for the vehicle. The ECO start/stop function, the Fuel Efficiency alternator and aerodynamically-shaped underfloor panelling all increase the efficiency of the vehicle.
The measures to reduce consumption and emissions in detail:
 Dependent on the specification and engine.
 The BlueEFFICIENCY package comes as standard with all vehicles fitted with 7G-TRONIC PLUS and as an optional extra for vehicles with 6-speed manual transmission.