It indicates the car speed.
See also:
Introduction
The radio has been designed according to the specifications of the passenger
compartment, with a personalized design to match the style of the dashboard.
If the radio has BLUE&ME™, refer to the ...
Engine
...
Checking fluid levels
IMPORTANT When topping up take care not to confuse the various types of fluids:
they are all incompatible with one another and could seriously damage the car.
IMPORTANT Never smoke while working in ...