Android auto and vehicle speed

[Tony 13]

I think I posted on this ages ago, but can't find it now.
Android auto is not showing the correct vehicle speed. It shows 5-7 mph whatever speed I am doing. I think just using the Navigation app on the phone the speed dispay was correct.
Is there a fix for this?

[Leike Lodiers]

Same here on my chigee the speed is 4/6KM lower in the MRA app than on the chigee. the speed indicator from my chige is the same as the speed on my bike. Anyone the same problem.