See also:

Current speed in km/h (U.S. models only)
This function provides the driver with an instantaneous conversion of the car's current speed from mph to km/h. ...

Seat belt maintenance
Check periodically that the seat belts are in good condition. Use water and a mild detergent for cleaning. Check seat belt mechanism function as follows: attach the seat belt and pull rapidly on t ...

Driving dynamics: engines
The Volvo S80 is the best handling, most agile, and best-performing big Volvo saloon ever. New versions of Volvo's renowned five-cylinder common-rail diesel engines produce excellent fuel economy ...