How much does it cost to replace spark plugs?
|Spark plugs||£3-£25 each|
|Spark plug wires/HT leads||£20-£50|
How much could I save by replacing my own spark plugs?
Spark plug replacement is a straightforward job, although it can involve having to remove other parts to be able to gain access to the spark plugs. Depending on the number of spark plugs involved, this job should take a home mechanic less than a couple of hours. A main dealer can charge you up to around £150 an hour's labour to fit new spark plugs, so this is a job well worth doing yourself, with a Haynes Manual by your side.