How often should you replace spark plugs in a car?

+1 vote
asked Jan 25, 2018 in Repairs/Maintenance by tshaw898 (300 points)
How often should you replace spark plugs in a car?

How many miles can you go before replacing your vehicles spark plugs?

1 Answer

0 votes
answered Jan 25, 2018 by Mechanic21 (29,150 points)
Spark plugs should be good for at least 100,000 miles before needing replaced.

But it doesn't hurt to take one of the spark plugs out sooner at 50,000 miles and check for any fouling of the plug.

If one of the spark plugs is fouling then you should replace them all.

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