Probably not, but there are plenty of drive gears available to correct any error it might have. A good speedo shop can also set up a speed-correcting gearbox if necessary. Drive the vehicle over a measured mile at an indicated 60 MPH and time the mile. 60 seconds = 60 MPH. Faster or slower can be converted into a percentage of correction necessary that can be converted into the number of teeth to add or subtract from the drive gear it has now.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!