See also:

Gear shift indicator
The concept The system recommends the most fuel efficient gear in the current driving situation. Displays Indicators to shift up or down are displayed in the instrument cluster. ...

Switching on/off manually
Press the button. ...

Fuel tank capacity
Gasoline engine Fuel tank capacity: approx. 21.6 US gal/82 liters. Refuel promptly Refuel below a range of 30 miles/50 km; otherwise, engine functions are not ensured and damage may occur. ...