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The speedometer is required by law.

The Tachometer is a good idea as it indicated the engine speed in RPM (revolutions per minute) and allows you to monitor the engine in a very quiet car or over modern stereos.

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15y ago

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Why would 2000 Chrysler Sebring both tachometer and speedometer stop at same time. The tachometer shows rpm of 5-6 and will not shift?

check the fuses.


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Use a GPS ^ posted by someone else What you want to do is drive with traffic and watch your tachometer. That is the RPM gauge, if your car has one. By marking the tach you can tell your approximate speed at any given time. You need to watch what RPM's you shift at, if you are in fifth gear cruising at 55mph then look at where your RPM's are... they will always be really close that in 5th gear at 55mph. You can then use that as an easy way to tell your speed with a broken speedometer.


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