See also:

Closing
•► Replace the fuel filler cap and turn it clockwise. The fuel filler cap audibly engages. •► Press the fuel filler flap closed until it engages audibly. If you drive with the fuel ...

Cargo & Towing
When properly equipped with the optional trailer hitch, the GLK350 is rated to tow up to 3,500 pounds. ...

Useful information
This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's Manual. Country-specific differences ...