I've encountered the same issue and noticed it particularly because I play on a 4K monitor, which might be harder to detect on an FHD display.
To make it easier to verify, I've attached some screenshots that also support his report:
Close-up screenshot:
You can see the speedometer has two scales: the outer in MPH and the inner in KPH.
Second screenshot:
The virtual HUD shows 107 in KPH, while the speedometer in the vehicle indicates about 107 in MPH.
These images clearly illustrate what his report describes.
I understand that developers are grappling with complex specifications for different vehicles' speed units in a limited amount of time. It's no surprise such errors can happen.
Thank you for your attention to this issue.
Good catch, and thanks for reporting. I totally missed the inner km/h scale in FHD while driving, so it easily confirms this small animation bug.
Still broken as of 1.9.
