Mercedes-Benz GL-Class: Important safety notes - Fuel - Service products and capacities - Technical data - Mercedes-Benz GL-Class Owner's ManualMercedes-Benz GL-Class: Important safety notes

WARNING Gasoline and diesel fuels are highly flammable 
Gasoline and diesel fuels are highly flammable and poisonous. They burn violently and can cause serious injury.
Never allow sparks, flames or smoking materials near gasoline or diesel fuelTurn off the engine before refueling.
Turn off the engine before refueling.
Whenever you are around gasoline or diesel fuel, avoid inhaling fumes and any skin or clothing contact. Extinguish all smoking materials.
Direct skin contact with fuels and the inhalation of fuel vapors are damaging your health.

    Fuel
    ...

    Premium-grade unleaded gasoline
    To ensure the longevity and full performance of the engine, only premiumgrade unleaded gasoline must be used. If no premium-grade unleaded gasoline is available and regular unleaded gasoline mu ...

    See also:

    High-beam headlamps
    ► Switch off the lights. ► Open the hood. ► Turn housing cover 1 counter-clockwise and pull it out. ► Turn bulb holder 2 counter-clockwise and pull it out. ► ...

    Controls (front touch screen)
    WARNING Do not adjust the touch screen controls, or allow the system to distract the driver, while the vehicle is moving. Driver distraction can lead to accidents, causing serious injury o ...

    Recommended Fuel
    Use premium unleaded gasoline with a posted octane rating of 91 or higher. You can also use regular unleaded gasoline rated at 87 octane or higher, but the vehicle's acceleration could be slight ...