Thanks for the replies,
I figured the computer should be reasonably accurate otherwise why bother with it! I have no previous experience of trip computers so didn't know if I was expecting too much of it.
I'm definately going to be writing to Volvo about this as I was stranded on a very busy A46* at rushhour with huge lorries bearing down on me and the service guy's reaction just astonished me. Good job I had my RAC card on me at the time otherwise I'd have had a long/dangerous walk to a garage.
* Near the '
Tollbar' island in '
Coventry':
