Fuel
The Insider's Guide to Finding Cheaper Fuel
Fuel prices can vary by up to 20p a litre between stations just a few miles apart. The days of simply driving to your nearest supermarket to get the best deal are over.
1. Supermarket vs Branded Fuel
While supermarket fuel (Asda, Tesco, Sainsbury's, Morrisons) is often cheaper, branded stations (Shell, BP, Esso) sometimes run localized price wars. All UK fuel meets the same minimum BS EN 228 standard, though premium branded fuels include extra cleaning additives.
2. The Motorway Premium
Never fill up at a motorway service station unless it's an emergency. They almost always charge a massive premium—often 15p to 30p more per litre. Use an app to find a station just a mile or two off a motorway junction instead.
3. E5 vs E10 Petrol
E10 is the standard petrol in the UK, containing up to 10% renewable ethanol. It's cheaper, but older cars (pre-2011) might require E5 (Super Unleaded). Always check your manufacturer handbook. E5 costs more, but some drivers report slightly better fuel economy with it.
4. When to Search Further
Driving 10 miles out of your way to save 2p a litre is a false economy—you'll burn more fuel getting there than you save. Use price comparisons for stations along your existing commute or regular routes for real savings.
Find the cheapest fuel near you
Use Kermo to turn the information in this guide into a practical vehicle or fuel check.
Find the cheapest fuel near you