In Reply to: Y2K owners - is your speedometer accurate? posted by Tired of getting passed by Escorts! on January 15, 2000 at 16:50:51:
I tried to match the speedo to my GPS, and it shows that the speedo was about 8% off as well. My Z3 is a 99, but according to many posts here on the board, it's a common problem with all the Z3s.