If your speedometer stopped working and stays at 0 MPH, you should have your car checked ASAP. The most common causes of a speedometer that stopped working include are a faulty speed sensor, a broken gear on the speedometer, damaged wiring, or a faulty engine control unit.

Can I still drive my car if speedometer doesn't work?

Can You Still Drive Your Car If the Speedometer Doesn't Work? Technically speaking, it is possible to drive a vehicle with an inoperable speedometer. However, doing so is not recommended. ... Simply put, you are highly unlikely to get out of a speeding ticket just because your speedometer is not working.

What would cause a speedometer to malfunction?

there are many possible reasons behind a faulty speedometer. the most common involve the vehicle speed sensor or an electrical issue. both problems can have impact in areas of your vehicle outside the speedometer.