Mercedes-Benz is now offering, with immediate effect worldwide, a stop-start system—ECO-Start—for all Sprinter vans with diesel engines and manual transmissions.
In some cases, depending on application and traffic density, drivers will be able to cut fuel consumption by as much as 20%, according to Mercedes, although on average, the amount saved will probably be somewhere between five and eight percent.
If the vehicle starts to move, the engine starts to ensure that servo assistance for the steering and brakes is maintained. In all other cases the engine does not re-start until the clutch pedal is fully depressed. If the battery voltage is low or if an attempt by the system to start the engine has failed, the ECO-Start function is deactivated.
The driver can also deactivate the system by means of a button on the instrument panel.
To avoid cold starts on the one hand and overheating on the other, the system only operates at coolant temperatures of between 40°C and 100°C. When the outside temperature is below freezing point, the engine is not switched off.