Volvo XC90: Specifications / Fuel tank volume
The fuel tank's refillable volume is shown in the table below.

The medium in the hydraulic brake system is called brake fluid and is used
to transfer pressure from e.g. a brake pedal via a master brake cylinder, which
in turn actuates the brake calipers...
The climate system in the vehicle uses a freon-free R1234yf refrigerant. For
information regarding the refrigerant, refer to the decal located on the inside
of the hood...
Other information:
City Safety1 is always active, but the function's warning distance
can be adjusted.
NOTE
The City Safety function cannot be deactivated. It is activated automatically
each time the engine/electric motor is started.
The alert distance determines the sensitivity of the system and regulates the
distance at which the light, sound and brake pulsations will be activated...
The fuel tank is equipped with a fuel filling system without a cover.
Refueling the vehicle at a service station
It is important to insert the pump's nozzle past both of the
two flaps in the fuel filler pipe before beginning fueling.
Instructions for fueling:
Turn off the engine and open the fuel filler door...