Why Would Odometer Stop Working?

If both your odometer and speedometer are not working, then it's likely your speed sensor needs to be replaced. These are easily installed and located near the back of your transmission. If only your odometer is busted, then it's likely the gears that turn the odometer have broken.

Is it illegal for your odometer not to work?

According to the National Highway Traffic Safety Administration, the federal odometer law prohibits the disconnection, resetting, or alteration of a motor vehicle's odometer with intent to change the number of miles indicated thereon. This law applies to a vehicle of any age, no matter who is selling it.

Can you drive a car with a broken odometer?

You may drive a car with a broken odometer in most states. If you sell the car, you must inform the buyer that the odometer does not work. Car dealers are subject to strict laws to prevent odometer tampering.