Compare UK petrol and diesel prices
A clear guide to comparing fuel prices across the UK, understanding the Government data behind them and choosing a station that genuinely saves you money.
Updated 16 August 2026 · Written by the Fuel Finder UK team
Where do UK fuel prices come from?
Fuel Finder UK uses the Competition and Markets Authority (CMA) open fuel price dataset. Major fuel retailers submit station prices to the scheme, making it possible to compare petrol and diesel prices in one place instead of checking each retailer separately.
How often are prices updated?
Prices are refreshed from available retailer feeds every 30 minutes. A price is still a snapshot: the forecourt may change it later, and a station can temporarily run out of a grade. Always check the station details before making a long detour.
Petrol or diesel: what can you compare?
You can compare standard petrol, premium petrol, standard diesel and other grades supported by the CMA data. Filter by fuel type, then sort by price or distance. Brand filters help when you have a loyalty card or prefer a particular retailer.
How to make a fair comparison
- Compare the same fuel grade at each station.
- Include the cost and time of the extra driving.
- Use your tank size or estimated fill amount, not just pence per litre.
- Check the timestamp and any community reports before leaving.
To check current results for your location, open the live UK price comparison.