I just looked up the {current} european legislation on speedometers:
- It should never read lower than the actual speed
- It should read at most actual speed + 10% + 4km/hour
May be VW does a better job, but a brand new one can read 114km/hr
when you're driving 100. So you are lucky when yours is accurate :-)

Jaap
'87 Caravelle diesel

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