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Fuel Systems Comparison - September 2025

7 Best Fuel Systems In the UK

1
Best Choice
9.6Exceptional
2
9.3Excellent
3
9.2Excellent
4
Best Value
9.1Excellent
5
9.0Excellent
6
8.7Very Good
7
8.6Very Good
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Model

REDEX Petrol Fuel System Cleaner 4 x 500ML
Model
STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml , Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK
Model
STP Ultra 5 in 1 Petrol System Cleaner 400ml, Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK
Model
Redex Petrol System Cleaner 250ml, Petrol Injector Cleaner To Remove Harmful Deposits, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Petrol Engines, Suitable For Hybrids
Model
LIQUI MOLY Fuel System Treatment | 300 ml | Petroladititive | SKU: 8365
Model
STP Diesel Fuel Additive Treatment Bundle, Includes Diesel Injector Cleaner and Ultra 5-in-1 Diesel System Cleaner, Cleans Injectors and Restores Performance For A Smoother Engine, Made in the UK
Model
Redex Diesel Fuel System Cleaner 500ml, Diesel Additives To Remove Harmful Emissions, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Diesel Engines, Suitable For Hybrids

Brand

Redex
Brand
STP
Brand
STP
Brand
Redex
Brand
Liqui Moly
Brand
STP
Brand
Redex

Reviews

984 reviews
Reviews
9,120 reviews
Reviews
4,176 reviews
Reviews
17,169 reviews
Reviews
1,464 reviews
Reviews
282 reviews
Reviews
9,120 reviews

Features

Worth the money

9.8
Worth the money
9.4
Worth the money
9.4
Worth the money
9.4
Worth the money
9.4
Worth the money
8.9
Worth the money
8.6

Simple to use

9.9
Simple to use
9.9
Simple to use
9.9
Simple to use
9.9
Simple to use
9.8
Simple to use
9.1
Simple to use
9.1

Distance

9.8
Distance
9.1
Distance
9.1
Distance
9.1
Distance
9.1
Distance
8.6
Distance
8.4

Tech Specs

manufacturer part number

Redex
manufacturer part number
-
manufacturer part number
-
manufacturer part number
RADD1101A
manufacturer part number
8365
manufacturer part number
-
manufacturer part number
LOYRADD1601A

item weight

1.94 kg
item weight
-
item weight
-
item weight
227 g
item weight
300 g
item weight
-
item weight
440 g

customer reviews

4.7 4.7 out of 5 stars 328 ratings 4.7 out of 5 stars
customer reviews
-
customer reviews
-
customer reviews
4.6 4.6 out of 5 stars 5, 723 ratings 4.6 out of 5 stars
customer reviews
4.6 4.6 out of 5 stars 488 ratings 4.6 out of 5 stars
customer reviews
-
customer reviews
4.6 4.6 out of 5 stars 3, 040 ratings 4.6 out of 5 stars

package dimensions

34.8 x 28.6 x 5.4 cm 1.94 kg
package dimensions
23.2 x 10.4 x 4.5 cm 399.16 g
package dimensions
-
package dimensions
-
package dimensions
-
package dimensions
24.8 x 10.4 x 9.6 cm 660 g
package dimensions
24.8 x 8.4 x 5 cm 440 g

product dimensions

-
product dimensions
-
product dimensions
6 x 3 x 15 cm 400 g
product dimensions
7 x 4.3 x 176 cm 226.8 g
product dimensions
30 x 25 x 32 cm 300 g
product dimensions
-
product dimensions
-

Available On

Available On
Available On
Available On
Available On
Available On
Available On

Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you
  • 9.6
    1
    REDEX Petrol Fuel System Cleaner 4 x 500ML
    Redex

    REDEX Petrol Fuel System Cleaner 4 x 500ML

    9.9 Simple to use
    9.8 worth the money
    9.8 distance

    Why we love it

    Easy to use; add directly to fuel.
    Improves fuel efficiency noticeably.
    Reduces harmful emissions effectively.
  • 9.3
    2
    STP

    STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml , Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK

    9.9 Simple to use
    9.4 worth the money
    9.1 distance

    Why we love it

    Enhances engine performance efficiently.
    Improves fuel economy noticeably.
    Protects engine from wear and tear.
  • 9.2
    3
    STP

    STP Ultra 5 in 1 Petrol System Cleaner 400ml, Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK

    9.9 Simple to use
    9.4 worth the money
    9.1 distance

    Why we love it

    Boosts engine performance effectively.
    Improves fuel economy noticeably.
    Protects engine components reliably.

Our ranking system

The TopChoice.co.uk Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria.We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. TopChoice.co.uk requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.

Features

Our team of experts analyzes key attributes, capabilities, significance, and many more depending on the type of product to determine its effectiveness.
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Consumer Reviews

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.
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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.
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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.

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