The conversation between human and AI assistant.
Why are speedometers inaccurate?
What can I do if I want to make sure my car's speedometer is accurate?
The best way to ensure the accuracy of your car's speedometer is to compare it to a GPS device or a speed radar gun. You can also check the accuracy of your speedometer by using a stopwatch and measuring the time it takes for your car to cover a certain distance. If your speedometer is consistently inaccurate, it may need to be recalibrated by a mechanic.