How long should spark plugs last?

How long should a set of spark plugs last?

Asked on 26 November 2021 by Keith Grumbley

Answered by Dan Powell
Depending on the car model and type of spark plug, between every 20,000 - 30,000 miles. Like many parts of your car, spark plugs are subject to wear and tear (especially the electrode).

Rough engine idling is the most common sign of spark plug wear. But you can also experience poor fuel economy, lumpy power delivery and even a misfire.
Tags: spark plugs
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