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Petrol Cleaner Additive Comparison - October 2025

7 Best Petrol Cleaner Additive In the UK

Last Updated - 19/10/2025

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Our Score

To Amazon

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Model

Wynn's Formula Gold High-Performance Petrol System Treatment - Enhances Engine Efficiency - Improves Acceleration & Reduces Noise - Cleans & Protects Fuel Injection System - 500ml

Model

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

STP Petrol Injector Cleaner 200 ml, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Mechanical Car Cleaning Products, Made in the UK

Model

Wynn's Total Action Petrol Injector & Fuel System Cleaner Additive Treatment 325ml

Model

Wynn's Xtreme Petrol System Cleaner - Complete Fuel System Cleaner - Restores Fuel Economy & Engine Performance - Prevents Turbo, EGR & Catalytic Converter Issues - 325ml

Brand

Wynn's

Brand

Cataclean

Brand

STP

Brand

Redex

Brand

STP

Brand

Wynn's

Brand

Wynn's

Reviews

1,212 reviews

Reviews

46,016 reviews

Reviews

5,568 reviews

Reviews

22,892 reviews

Reviews

4,780 reviews

Reviews

932 reviews

Reviews

692 reviews

Features

Worth the money

9.9

Worth the money

9.1

Worth the money

9.4

Worth the money

9.4

Worth the money

9.3

Worth the money

8.6

Worth the money

9.1

Simple to use

9.9

Simple to use

9.8

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

8.4

Distance

9.1

Tech Specs

product dimensions

5 x 9 x 24 cm 0.5 g

product dimensions

6.8 x 6.8 x 23 cm 431 g

product dimensions

6 x 3 x 15 cm 400 g

product dimensions

7 x 4.3 x 176 cm 226.8 g

product dimensions

23 x 8 x 23 cm 199.58 g

product dimensions

7 x 7 x 16 cm 320 g

product dimensions

manufacturer part number

70701

manufacturer part number

120007

manufacturer part number

RADD1101A

manufacturer part number

GST53200EN

manufacturer part number

36064

manufacturer part number

29764

customer reviews

4.5 4.5 out of 5 stars 303 ratings 4.5 out of 5 stars

customer reviews

4.5 4.5 out of 5 stars 11, 504 ratings 4.5 out of 5 stars

customer reviews

4.6 4.6 out of 5 stars 5, 723 ratings 4.6 out of 5 stars

customer reviews

4.5 4.5 out of 5 stars 1, 195 ratings 4.5 out of 5 stars

customer reviews

4.5 4.5 out of 5 stars 233 ratings 4.5 out of 5 stars

customer reviews

4.5 4.5 out of 5 stars 173 ratings 4.5 out of 5 stars

model

Wynn's 70701, Formula Gold Petrol, 500 ml

model

CAT001

model

LOYRADD1101A

model

ST53200EN

model

Total Action Petrol Treatment

model

Wynn's 29764, Xtreme Petrol System Clean, 325 ml

item weight

431 g

item weight

227 g

item weight

200 g

item weight

320 g

item weight

300 g

Available On

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Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you

9.7
1

Wynn's
Wynn's Formula Gold High-Performance Petrol System Treatment - Enhances Engine Efficiency - Improves Acceleration & Reduces Noise - Cleans & Protects Fuel Injection System - 500ml

9.9 worth the money

9.9 Simple to use

9.8 distance

Why we love it

Boosts engine performance instantly.

Improves fuel efficiency significantly.

Reduces harmful emissions effectively.
Main highlights

SAFE FOR CATALYTIC CONVERTERS & ALL PETROL ENGINES: Wynn's Formula Gold Petrol System Treatment is formulated to be completely safe for use in all petrol engines, including those equipped with catalytic converters and modern exhaust after-treatment systems. Unlike harsh additives that can damage sensitive engine components, this treatment is carefully engineered to enhance performance without causing harm. Suitable for both older and newer vehicles, it provides a versatile solution for maintaining engine efficiency. For optimal performance, it is recommended to use this treatment in every third tank of fuel to continuously benefit from its cleaning and protective properties.
REDUCTION OF HARMFUL EMISSIONS: Designed to contribute to a cleaner environment, this treatment significantly reduces harmful exhaust emissions such as carbon monoxide (CO) and hydrocarbons (HC). By promoting more complete combustion, the formula helps decrease the production of toxic gases, making it an ideal solution for those aiming to meet stringent emissions regulations. Regular use can assist in passing MOT emissions tests by lowering pollution levels and ensuring the engine operates within regulatory standards. A cleaner exhaust system means less impact on the environment and improved air quality.
INJECTION SYSTEM CLEANING & PROTECTION: A clean fuel system is essential for maintaining vehicle performance and efficiency. Wynn's Formula Gold Petrol System Treatment actively cleans and protects the entire fuel injection system, preventing deposits from forming on critical components such as injectors, intake valves, and combustion chambers. A well-maintained injection system allows for smoother fuel delivery, preventing engine hesitation and misfires. By continuously safeguarding these components, the treatment ensures that the vehicle maintains optimal power output while extending the life of the fuel system.
HIGH-PERFORMANCE PETROL ENGINE BOOSTER: Wynn's Formula Gold High-Performance Petrol System Treatment is designed to enhance engine performance by improving combustion immediately. A more efficient combustion process results in better acceleration, smoother engine operation, and reduced engine noise. By optimising fuel burn, the treatment contributes to a more responsive driving experience and minimises power loss over time. Ensuring a cleaner and more effective fuel burn not only improves engine longevity but also helps maintain optimal performance levels, making it an ideal addition to any vehicle maintenance routine.
FUEL EFFICIENCY & CONSUMPTION REDUCTION: This advanced formula actively works to lower petrol consumption by optimising the fuel system's efficiency. By cleaning and maintaining fuel injectors, the treatment ensures a precise air-fuel mixture, which directly leads to improved mileage and reduced fuel wastage. The result is a more cost-effective driving experience with fewer trips to the petrol pumps. Over time, continuous use helps prevent build-up in the injection system, allowing the engine to operate with maximum efficiency, reducing the strain on fuel components and prolonging their lifespan.
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9.4
2

Cataclean
Cataclean Petrol | Complete Fuel & Exhaust Cleaner | Catalytic Converter, Valve & Injector Cleaner | Fuel Additive Formulated for Performance & Fuel Efficiency | Pre MOT Emissions Reducer | 500ml

9.8 Simple to use

9.1 worth the money

9.1 distance

Why we love it

Boosts fuel efficiency significantly.

Reduces harmful emissions effectively.

Enhances engine performance reliably.
Main highlights

VEHICLE MAINTENANCE > Safe for all engines, Cataclean original 8-in-1 engine cleaning system has been scientifically formulated to help your vehicle engine run better and last longer. Adding Cataclean as part of your regular vehicle maintenance routine to remove carbon build up improves fuel economy, reduce emissions, restores performance and protects catalytic converters
USAGE > Add 500ml of Cataclean fuel additive per 15 litres of fuel every three months for optimum results
REDUCE EMISSIONS > Regular use of Cataclean engine cleaning system can reduce emissions by up to 60% which can help prevent to MOT emissions failures and reduce air pollution
ENGINE PERFORMANCE > Using Cataclean fuel system cleaner restores engine performance, reduces vehicle maintenance costs and reduces fuel consumption, improving MPG fuel efficiency
CLEANS & PROTECTS > Cataclean cleans, restores & protects the fuel tank and lines, fuel injectors, catalytic convertors, diesel particulate filters (DPF), exhaust gas recirculation valves, oxygen sensors, combustion chambers & intake and exhaust valves
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9.3
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.
Main highlights

Restores Power and Performance - Recovers peak engine performance by removing harmful deposits
Reduces Petrol consumption and exhaust emissions - promotes better fuel economy
Protects Your Engine - Reduces friction and protects key engine parts from wear and corrosion
Packaging may vary
For capless fuel tanks, please use manufacturer supplied funnel to pour STP additive in
Concentrated Cleaning Power - Cleans and conditions the entire fuel delivery system in one tank
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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.

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.

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.

7 Best Petrol Cleaner Additive In the UK

Our Score

To Amazon

Model

Brand

Reviews

Features

Worth the money

Simple to use

Distance

Tech Specs

product dimensions

manufacturer part number

customer reviews

model

item weight

Available On

Our Top 3 Picks

Wynn's Formula Gold High-Performance Petrol System Treatment - Enhances Engine Efficiency - Improves Acceleration & Reduces Noise - Cleans & Protects Fuel Injection System - 500ml

Why we love it

Cataclean Petrol | Complete Fuel & Exhaust Cleaner | Catalytic Converter, Valve & Injector Cleaner | Fuel Additive Formulated for Performance & Fuel Efficiency | Pre MOT Emissions Reducer | 500ml

Why we love it

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

Why we love it

Our ranking system

Features

Consumer Reviews

Popularity

Value for money

Value for money

Related deals you might like for petrol cleaner additive

Wynn's Catalytic Converter & Lambda Sensor Cleaner - Optimises Efficiency, Reduces Emissions & Restores Engine Performance - Ideal for Petrol & Hybrid Engines - 325ml

LIQUI MOLY Speed Tec Gasoline | 250 ml | Petroladititive | SKU: 3720

Fastcar 2 x Redex Petrol System Cleaner (500ml For The Price Of 250ml)

7 Best Petrol Cleaner Additive In the UK

petrol cleaner additive comparison

Our Score

To Amazon

Model

Brand

Reviews

Features

Worth the money

Simple to use

Distance

Tech Specs

product dimensions

manufacturer part number

customer reviews

model

item weight

Available On

Our Top 3 Picks

Wynn's Formula Gold High-Performance Petrol System Treatment - Enhances Engine Efficiency - Improves Acceleration & Reduces Noise - Cleans & Protects Fuel Injection System - 500ml

Why we love it

Cataclean Petrol | Complete Fuel & Exhaust Cleaner | Catalytic Converter, Valve & Injector Cleaner | Fuel Additive Formulated for Performance & Fuel Efficiency | Pre MOT Emissions Reducer | 500ml

Why we love it

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

Why we love it

Our ranking system

Features

Consumer Reviews

Popularity

Value for money

Value for money

Related deals you might like for petrol cleaner additive

Wynn's Catalytic Converter & Lambda Sensor Cleaner - Optimises Efficiency, Reduces Emissions & Restores Engine Performance - Ideal for Petrol & Hybrid Engines - 325ml

LIQUI MOLY Speed Tec Gasoline | 250 ml | Petroladititive | SKU: 3720

Fastcar 2 x Redex Petrol System Cleaner (500ml For The Price Of 250ml)

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