UK fuel guides: prices, petrol grades and driving costs.
Practical guides to spending less on fuel. Understand petrol grades, compare driving costs and choose fuel stops that make sense for your journey.
Saving on fuel
How to save money on fuel
Three quick wins: use less fuel, drive more smoothly and check whether the cheaper stop is worth it.
Are fuel prices coming down in the UK?
30-day petrol and diesel movement, fill-up impact and why the line is not a forecast.
Supermarket fuel vs branded fuel
Separate fuel standards from additive claims, then compare the actual price and route.
Motorway fuel prices in the UK
Understand the convenience premium, compare nearby alternatives and decide when leaving the motorway is worthwhile.
How to use a fuel finder app
Five checks for fuel grade, price timestamps, station details, extra driving and directions.
Petrol grades
What RON petrol does my car need?
Understand RON 95, 97, 98, 99 and 102, plus how E5 and E10 labels fit into the fuel choice.
Can you mix E5 and E10 petrol?
The official UK answer, compatibility check and accidental-fill guidance.
UK premium petrol: Tesco, Shell, Esso and Texaco
Compare premium petrol products, local E5 prices and the difference between octane ratings and search groups.
Is RON 99 fuel worth it?
See when RON 99 makes sense for performance cars, remapped cars and everyday driving, then compare the extra cost.
Journey costs
Is the cheapest fuel worth the detour?
A practical framework for price difference, fill size and extra miles.
Fuel saving after a detour
The formula behind gross saving, detour fuel and saving after extra driving.
How to find cheaper fuel along your route
Compare fuel grade, pump price, extra road distance and fill amount for the journey you are already making.
Using AA or RAC planners alongside a fuel-stop comparison
Enter matching journey details separately, check both routes and compare suitable fuel stops.
Petrol vs electric car cost per mile UK
Compare petrol and EV energy cost per mile using UK MPG, charging efficiency, home charging and public charging assumptions.
How our calculations work
Route & Fuel savings methodology: the inputs, assumptions and limits behind the estimates.