See also:

The concept
The automatic engine start-stop function helps save fuel. The system switches off the engine during a stop, e. g., in a traffic congestion or at traffic lights. The ignition remains switched on. ...

Remove attached partsfollowing use
Remove auxiliary mirrors, roof or rear luggage racks which are no longer required following use. Attached parts on the vehicle impair the aerodynamics and increase the fuel consumption. ...

Starting aid terminals
Connecting order Connect the jumper cables in the correct order; otherwise, there is the danger of injury from sparking. The so-called starting aid terminal in the engine compartment acts a ...