Bit disappointed to find my new FR over-stating speed by 5% relative to GPS.
I’ve been in a few Audi’s recently and they were all spot on, so I am surprised to find this in the Leon.
Given the Tech Pack as well it would be nice to see some automated calibration (curious that the SatNav does not even show GPS speed).
Yes the tyres are correctly inflated and brand new. As they wear the speed measurement will therefore get worse.