10 bestFuel Efficient Carof December 2025
112M consumers helped this year.
5% off
1
GreenChem Adblue 2 x 10L Cans With Spout (20L in total)
GreenChem
9.7
2
Cataclean Petrol | Complete Fuel & Exhaust Cleaner | Catalytic Converter, Valve & Injector Cleaner | Fuel Additive Formulated for Performance & Fuel Efficiency | Pre MOT Emissions Reducer | 500ml
Cataclean
9.4
3
Ladieshow Diesel Transfer Pump 220V, Self Priming Cast Iron Electric Oil Transfer Pump 550W Uk Plug Electric Fuel Transfer Pump 220V With Cooling Fans Efficient Refueling
Ladieshow
9.2
26% off
4
Draper Dual Purpose Air and Fluid Transfer Pump | Syphon Fuel Transfer Hand Pump | Oil Extractor Pump Syringe | 01082, Blue
Draper
8.9
5
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
8.6
OtherUp to 4% off
Forte Lubricants Car Diesel Fuel System Specialist Injector Cleaner - 400ml
Anesty Water Pump Diesel Fuel Transfer Pump DC 12V Φ51mm for Water Oil Liquid Diesel, Stainless Steel Submersible Pump with Cigarette Plug, Filter Removable | 3 Meter Power Cord + Hose, Hose Clamps
Wynn's Formula Gold Petrol System Treatment Performance & Fuel Economy Restoring Additive 500ml
Fuel Funnel with Fine Mesh Filter and Handle for Easy Refilling - Thick Plastic Fuel Funnel for Petrol, Diesel, Oil, Ad-blue, Water, Screen Wash (Blue)
7% off
6
Dipetane DP001 1 ltr Fuel Additive Treatment for Improve Fuel Economy and Reduced Emissions
DIPETANE
8.3
29% off
7
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
8.0
62% off
8
Draper 140mm PVC Flexible Funnel | Gauze Filter | Handle for Efficient Refilling | Multifunctional Funnels | 56141, Black
Draper
7.7
10% off
9
STP Diesel Fuel Additive Twin Pack
STP
7.4
10
Redex Diesel Fuel System Cleaner 250ml, Diesel Additives To Remove Harmful Emissions, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Diesel Engines, Suitable For Hybrids
Redex
7.1
Related Reviews You Might Like
Best Reviews Guide Newsletter
Get exclusive articles, recommendations, shopping tips, and sales alerts
Sign up for our newsletter to receive weekly recommendations about seasonal and trendy products
Thank you for subscribing!
By submitting your email address you agree to our Terms and Conditions and Privacy Policy