Years ago when we lived in Torquay Vic there was a speedo check across the Geelong road and gave you a readout of your actual speed vs speedo - You sat on exactly 100kph per your speedo between two lines on the road and a digital readout gave the true speed. We had two cars one registered 2kph under (Lazer) and one 5kph over (Fairmont)

I have checked the current Avalon with the GPS and at 110kph per GPS the speedo reads 108kph yet at 100kph it is spot on
So what I'm saying is a little bit of variation appears to be the norm

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David L
My greatest fear in life is that when I die my wife will sell my Mini and tools for the price I told her I paid for them!