The average car speedometer may be off by a few mph There are several GPS and 3rd party apps that show your actual speed The speedometer, of course, tells you how fast or slow your car is moving when ...
Fast Lane Only on MSN
Your speedometer is lying, but is GPS accuracy actually any better?
Modern cars surround drivers with digital certainty, yet one of the most basic numbers on the dashboard is quietly biased in ...
Yes, it does! Though not as much as speedometer fudging by your car manufacturer. Your car can only measure rotations of the axle, with expectations of tyre circumference based on its standard tyres.
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