See also:

Socket for OBD Onboard Diagnosis
Socket for OBD Onboard Diagnosis On the driver's side is an OBD socket for checking the primary components in the vehicle emissions. ...

Tachometer
Never force the engine speed up into the red warning field, see arrow. In this range, the fuel supply is interrupted to protect the engine. ...

Close the windows and glass sunroof
Driving with the glass sunroof and windows open results in increased air resistance and raises fuel consumption. ...