Advertising Disclosure Spark Plugs Comparison - August 2025
6 Best Spark Plugs In the UK
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you9.7
1Bosch AutomotiveBosch 0242230806 (N40), Spark Plug Set of 4 - for a Reliable Gasoline Engine Start and Long Service Life - with Robust Design
Main highlights- We are here to help: In case further information about this product is needed, please reach out via the Amazon Customer Questions and Answers section, and our dedicated team will assist you
- Tech specs: 4 nickel alloy spark plugs - Electrode gap: 0.9 mm - Thread length and size: 19 mm, 14 mm - Spark position: 5 mm - Prescribed tightening torque: 28 Nm
- Steady acceleration and operation: Bosch standard spark plugs feature ground electrodes with a nickel alloy and copper core for high heat conduction, ensuring your engine runs smoothly and efficiently
- Heroes under the hood: With more then 120 years of ignition expertise, Bosch spark plugs have original equipment quality and are trusted by many well-known manufacturers worldwide
- Easy to replace: No adjustment necessary as the electrode gap is pre-set - It's advised not to lubricate the thread and to use a torque wrench - Refer to the instruction manual for guidance
- Compatibility matters: Use the parts' search function at the top of this page to find the correct spark plug for your vehicle, the engine requirements define the spark plug design needed for each car
9.4
2Bosch AutomotiveBosch HR7MEV (N44) - Spark Plugs Nickel - Set of 4
Main highlights- Supports an optimum engine performance: smooth engine operation and steady acceleration
- Plugs easy to replace: factory-pre-set electrode gap, no adjustment necessary; Bosch advices not to lubricate the thread, Requested tightening torque or angle see on package
- Please use the vehicle identification to confirm compatibility with your vehicle, All restrictions must be observed
- Please note that the specified OE reference numbers do not constitute an exhaustive list, Use the parts search tools at the top of this page to find out the correct spark plug for your vehicle
- High wear resistance and robustness: special ceramic material with high dielectric and mechanical strength
- High reliabilty: excellent cold start behaviour
- Corrosion protection: outstanding engine protection due to anti-seize nickel-plated housing and thread
9.2
3Bosch Automotive17% OffBosch Super 4 0242232802 (N50), Spark Plug Set of 4 - for a Reliable Gasoline Engine Start and Long Service - with Robust Design
Why we love it
Boosts engine efficiency significantly.
Improves acceleration noticeably.
Enhances driving comfort.
Main highlights- We are here to help: In case further information about this product is needed, please reach out via the Amazon Customer Questions and Answers section, and our dedicated team will assist you
- Tech specs: 4 spark plugs with 4 ground electrodes - Electrode gap: 1.1 mm - Thread length and size: 19 mm, 14 mm - Spark position: 5 mm - Prescribed tightening torque: 28 Nm
- Highly reliable: Outstanding protection against carbon fouling thanks to the advanced surface air-gap technology
- Heroes under the hood: With more then 120 years of ignition expertise, Bosch spark plugs have original equipment quality and are trusted by many well-known manufacturers worldwide
- Easy to replace: No adjustment necessary as the electrode gap is pre-set - It's advised not to lubricate the thread and to use a torque wrench - Refer to the instruction manual for guidance
- Compatibility matters: Use the parts' search function at the top of this page to find the correct spark plug for your vehicle, the engine requirements define the spark plug design needed for each car
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Features
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We ensure an evaluation of the ratings using references all over the internet for each product. With the help of our AI technology and professional review teams, we give weight to the worth of individual user experiences.Popularity
Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.