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What RPM should a car idle at?

My car has been revving lately while I’m parked or sitting at stoplights. I can’t tell if it’s normal or not. What RPM should a car idle at?

avatar
Melanie Mergen · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
While there’s some variance depending on the kind of car you’re driving and its engine, most modern cars should comfortably idle somewhere between 600 and 1000 RPMs. If you notice your car idling outside this range, you might want to have it looked at by a mechanic.
The
temperature
outside can affect your idling RPMs, too—cold weather can make your car work a little harder to keep up with its typical processes when you start it up, making the RPM a little higher, but it should fall back to a normal range as your car gradually warms up.
If your car idles at too high of an RPM, or if it idles rough (and it sounds like you’re saying that yours does), you should have a trusted mechanic take a look to avoid unwanted
damage
.
Hope this helps! While you’re taking care of your car, make sure your car insurance policy is, too.
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