FREE collection & delivery — Book today and save £20 ✌️

Hassle-free spark plugs replacement
Get an instant quote and save up to 30%

spark plugs replacement
Your postcode
Your registration number
or call us for free on 0800 368 8632

Free pick up and delivery

— anywhere, any time

Top-rated mechanics

and garages across the UK

Upfront, fixed quotes

up to 30% cheaper than average

Manufacturer-equivalent

parts only

axa insuranceIn partnership with AXA™ Insurance
Honest, upfront quotes and savings up to 30%
Car make and modelDealers
average price
Fixter logoexclusive priceInstant savings

* The cost of your brake discs replacement depends on your car make and model and may vary depending on your location.

What do spark plugs do?

Spark plugs convert electric current from the ignition coil into a spark that ignites the fuel and air mix inside the car engine. This combustion is what powers the engine and moves the car. Spark plugs are located in the cylinder head and are connected via external leads attached to the engine.

How often should spark plugs need replacing?

Most manufacturers recommend that spark plugs should be replaced at around every 30k miles; this is only a guideline, as the quality of the component, engine performance and driving habits can affect spark plug lifespan significantly.

The law, vehicle regulations and your MOT

Old or damaged spark plugs can affect engine performance areas that cause an MOT failure, for example, in emissions testing. Poor performing spark plugs or filters that clog up can affect the gasses that are delivered from your exhaust; replacing these faulty parts can often rectify the problem.

What happens when we replace your spark plugs?

  • Our efficient and fully qualified mechanics will check for possible fault codes relating to the ignition system, the operation of the ignition system and the spark plugs themselves.
  • A compression test may be carried out on each of the engine’s cylinders.
  • Wherever required your spark plugs will be replaced and you’ll be advised of any other connected or associated problems arising from their malfunction.
  • You will also be advised of any other affected parts that may need to be replaced for the best operation and health of your vehicle.
  • Once the spark plugs have been replaced, our mechanics will test them thoroughly to ensure their correct operation and make any adjustments required for their optimum performance.

What causes spark plugs to stop working correctly?

Spark plugs can wear out over time, at which point they should be replaced to ensure the correct combustion of fuel. There is also a chance of potential carbon build up on the electrodes; this is known as carbon fouling and will affect the correct operation of the spark plugs. Oil can build up on the spark plugs too, which can be rectified with a simple cleaning.

Spark plugs can occasionally melt due to excessive engine temperatures. This isn’t usually a spark plug fault, but that of the engine or fuel system.

Symptoms of malfunctioning spark plugs

Starting your engine is problematic

If your car struggles or fails to start, it could be down to faulty spark plugs.

Engine cut out or misfiring

If your engine cuts out after starting or during its usual operation, if it fails to run smoothly or it vibrates excessively under normal use, then your spark plugs could be due to worn out spark plugs.

The dashboard engine warning light is illuminated

Any dashboard warning light is due to a sensor detecting fault or incorrect operation of a related component. An engine warning light could relate to a faulty spark plug.

Fuel consumption is higher than normal

Faulty spark plugs can cause your engine to burn fuel in an erratic manner, affecting both vehicle performance and fuel consumption. If you notice a change in your fuel consumption, it could be a spark plug problem.

Here’s what our customers have to say…

  • Michael

    I used fixter for the first time today it is a fantastic service my car was picked up on time and deliverd back to me well before the time slot I was very pleased with the service they provided for me and it was no hassle for me to go out and find a garage for my M O T I sat in my house did things ...

  • Gillian

    "I really can't rate this service high enough. Dan Johnson picked my car up at around 8.30am - he was pleasant and polite. Off it went to the garage, I got a text 20 minutes later to say it had arrived and around an hour later another text to say it was on it's way back - with a nice shiny ""Pass"...

  • Sharon

    Wow picked car up for mot half hour early and back 2 hours after excellent service and exceptionally good priced so pleased I accidently found this company and daniel the young man is courteous and polite thank you will be telling all my friends

  • Craig

    A good company to work with, the only negative is invoice has to be done in a particular way! But they are rolling out automatic invoicing,So the negative feedback will become positive feedback.Good work guys.

  • Amanda

    Easy to book a MOT. Quick and efficient - great to have the car picked up and dropped off. Payment easily sorted online. Will recommend! Thanks

  • Padraig

    Good service and very good value!

Book your next spark plugs replacement in less than 5 minutes.

Step 1Select the services your car needs.
Step 2Schedule your FREE collection and delivery slots.
Step 3Book with confidence and pay later.

Try Fixter today

Your postcode
Your registration number
or call us for free on 0800 368 8632

Upfront fixed prices

Get a straightforward quote for hundreds of services and car repairs.

Trustworthy mechanics

Access the best local garages in the UK, and mechanics with 10+ years experience.

12-month warranty

Insure every service. Both parts and labour are covered by Axa within 12 months.

Secured payment

Book now and only pay after your car has been serviced.

💬

We’re here to help you with every aspect of your booking!

Our customer service team are available Monday to Friday, 7am to 7pm.