I drive a SsangYong Musso, and the speedometer consistently reads a few miles per hour above my satnav. I have always believed that the satnav would be the most accurate and reliable, but I recently ...

The inaccuracy of the speedometers used by most vehicles, even those in cars with the coolest gauge clusters, is well known. The good news is that most speedometers report speeds higher than the ...

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 ...