10 Best Fuel Additives For Petrol Engines

10 Best fuel additives for petrol engines - January 2026

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Last Updated: 01-01-2026

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Archoil AR6900-P Max Advanced PETROL Fuel Additive Concentrate, 1L Treats 1,000L of Fuel, Petrol Injector Cleaner, GPF Turbo EGR Valve Cleaner, Super Unleaded Convertor (1Litre)

Archoil

9.8

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3% Off

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

Cataclean

9.6

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Best value

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

Wynn's

9.5

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Archoil AR6900-P Max Advanced PETROL Fuel Additive Concentrate, Treats 500L of Fuel, Petrol Injector Cleaner, GPF Turbo EGR Valve Cleaner, Super Unleaded Convertor (2 x 250ml)

Archoil

9.2

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6% Off

Dipetane 1L Fuel Additive | Improve Fuel Economy | Reduce Emmisions | Helps keep DPF Clean Diesel and Petrol | Flush and clean Engine, Injector, EGR valve and Sensors - Treats 200L of Fuel

DIPETANE

9.1

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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

STP

8.8

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Briggs & Stratton Fuel Fit Additive/Stabiliser. 992381

Briggs & Stratton

8.6

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5% Off

LIQUI MOLY Fuel System Treatment | 300 ml | Petroladititive | SKU: 8365

Liqui Moly

8.4

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STP 50500EN 500ml Complete Fuel System Cleaner for Petrol Engines

STP

8.2

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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

Redex

8.1

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Archoil AR6900-P Max Advanced PETROL Fuel Additive Concentrate, 1L Treats 1,000L of Fuel, Petrol Injector Cleaner, GPF Turbo EGR Valve Cleaner, Super Unleaded Convertor (1Litre)

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

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

Archoil AR6900-P Max Advanced PETROL Fuel Additive Concentrate, Treats 500L of Fuel, Petrol Injector Cleaner, GPF Turbo EGR Valve Cleaner, Super Unleaded Convertor (2 x 250ml)

Dipetane 1L Fuel Additive | Improve Fuel Economy | Reduce Emmisions | Helps keep DPF Clean Diesel and Petrol | Flush and clean Engine, Injector, EGR valve and Sensors - Treats 200L of Fuel

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

Briggs & Stratton Fuel Fit Additive/Stabiliser. 992381

LIQUI MOLY Fuel System Treatment | 300 ml | Petroladititive | SKU: 8365

STP 50500EN 500ml Complete Fuel System Cleaner for Petrol Engines

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

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