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Want to learn more about Spark Plug changes?
Read our short guide with information on costs, symptoms and more.
What does a spark plug do?
The engine's spark plugs provide the spark in the combustion chamber to detonate the fuel and air mixture in order to force the piston back down and thereby rotate the crankshaft.
What does a spark plug replacement involve?
- Mechanic will read the ECU for possible fault codes related to the ignition system.
- Mechanic will inspect the ignition system and spark plugs.
- If necessary, the mechanic will replace the full set of spark plugs
- Mechanic will advise if any other parts need to be replaced.
- Mechanic will check if the ignition system works correctly again and will test drive the car.
Can I replace spark plugs on my own?
Unless you are a qualified mechanic with the required skills, training and equipment to do the job, we strongly recommend a spark plugs change is only carried out by a professional mechanic. ClickMechanic can help get you a vetted and local mechanic to carry out the work. Just enter your postcode and your car's registration number at the top of this page and select the work needed to get an instant fixed price up front.
What are the symptoms of bad spark plugs?
The main symptoms that can occur when there is a faulty spark plug are;
- When starting the car is problematic.
- When the engine cuts out after starting.
- When the engine does not run smoothly (the engine misfires).
- When the car vibrates excessively.
- When the 'Check Engine' light on the car's dashboard is on.
How long will a spark plugs change take?
On average a spark plugs change will usually take 1 hour, but can take anywhere from under 1 hour to 1.5 hours. The time that the job takes will depend on a range of factors. For example, your vehicle's make and model, year, as well as other factors. Select your car at the top of this page for information on job time and cost for your vehicle through ClickMechanic.
How often should you change spark plugs?
Spark plugs are critical to the smooth running of an engine. Without them, the engine will simply not work as it should, if at all. Therefore as soon as you are advised that the spark plugs need changing, you should do so. Running an engine with a faulty spark plug can also cause additional wear and tear on other items.
Spark plugs are always replaced as a set and not done individually.
How can I extend the life of my spark plugs?
The only thing you can do in reality is to use good fuel as this will improve the combustion and prevent the build up of deposits.
Manufacturers service schedules for spark plug changes should be adhered to all tie to prevent issues from arising with older plugs.
Can you drive with a bad spark plug?
If you suspect there is any issue with a spark plug or if there are concerns about its age or condition, book with a professional mechanic as soon as possible to get it checked and replaced if necessary, driving the vehicle may lead to further complications. Bad spark plugs can cause engine misfires and lead to potential engine damage and overheating of the catalytic converter.
How much does it cost to have your spark plugs changed?
On average a spark plug change costs around £85. Typical prices can range anywhere from £55 to £125. Ultimately, the cost depends on your car and what parts your car's manufacturer recommends using for the replacement. Find out what you could save by having the spark plugs replaced by ClickMechanic by selecting your car at the top of this page!
Want to know how much you'd pay at a franchise dealer or independent garage?
Check out the ClickMechanic price for a Spark Plug change. We use industry standard data & millions of data points so you know what you should be paying
These estimates may include Spark plug.
48 manufacturers for Spark Plug Change
Prices could not be created for 33 models. Show ∨
- Microcar
- Metrocab
- Hummer
- Reva
- Asia
- TVR
- Morgan
- Buick
- Lamborghini
- Pontiac
- Carbodies
- Mitsubishi Fuso
- Moskvich
- LDV
- Ford US
- Aixam
- Austin
- Daimler
- FSO
- Iveco
- Maybach
- Rolls-Royce
- Santana
- Tata
- Great Wall
- Piaggio
- Perodua
- Infiniti
- Isuzu
- Lada
- Lancia
- Lotus
- London Taxi's International
Estimates on repair costs, such as the above results for a spark plug change, are created by combining data from multiple third-party sources. The actual cost of using your local repair providers may be outside of the estimated range. We provide estimates on repair costs for information only and accept no liability for any inaccuracies or errors. If you think an estimate is incorrect, please contact us to let us know.
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Mechanics that undertake spark plug work
- Ac Automotive Wiltshire LTD, Corsham
- Akb, Bristol
- Car & Commercial Services, Kirriemuir
- Mbc Vehicle Solutions, Bexhill
- Niche Motors Limited, Bradford
- Roadside Mobile Mechanics Ltd, Welling
- S P Motors, Dundry
- SW Automotive, Sutton On Sea
- Sammy J Autos, Rushden
- Tg Services, Malmesbury
- Weymouth Motor Services, Weymouth
Recent Spark Plug change quotes
These recent quotes were taken from our quote engine which uses third-party industry standard data on repair times, along with a live parts retailer, and a regional labour rate to build an accurate free quote. We are constantly improving our quote engine, so please let us know if a price seems incorrect.