What are spark plugs and how do I know when they need replacing?

Spark plugs are used in car petrol engines to ignite the fuel-air mix in the cylinders. Over time, they will wear out and must be replaced. Misfiring or problems starting the engine can indicate a problem with your car spark plugs, as well as slow acceleration and high fuel consumption.

The right spark plugs for your vehicle will depend on its make, model, and age. You can find the right spark plugs for your vehicle using our vehicle registration lookup tool. If you would like us to fit these for you, just visit your local Halfords Autocentre and one of our team can order the right parts for your car and fit them.

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