Home › Guides
Fuel price guides
Each of these answers one question with the current data rather than in general terms. Every figure is computed when the site is built, from the prices retailers are legally required to publish, so a guide says what is true as at 2026-09-25 and not whenever it was written.
Cheapest petrol near me: what the search is actually worth Everyone says shop around. This says how much it saves, town by town, and where it saves nothing at all. Updated 25 September 2026 Petrol prices since 2018, and the rocket-and-feather test 456 weeks of official pump prices charted. We tested whether prices rise faster than they fall and report plainly that this series does not show it. Updated 25 September 2026 What you actually pay for in a litre Duty, VAT, the fuel itself and the retailer, split out of today's average pump price. Nearly half of it is tax. Updated 25 September 2026 Supermarket fuel, and when it is not the cheapest The supermarket saving measured across every forecourt in Britain, plus the towns where an independent undercuts all of them. Updated 25 September 2026 The motorway fuel premium What a motorway service area charges over an ordinary forecourt, measured across every service area in Britain. Updated 25 September 2026 Diesel and petrol: the gap at the same pump The duty is identical, so the whole difference happens before tax. Measured at the forecourts selling both. Updated 25 September 2026 Fuel duty and the rise that is already legislated The 5p cut expires at the end of 2026 and unwinds in two steps. What each step costs a tank, and a year. Updated 25 September 2026
Every guide shows its workings and links to the underlying data. Where a figure would be distorted by one mistyped price, the method says how that is handled. There is nothing here we cannot show you the numbers for.
Data as at 2026-09-25, polled every 30 minutes Download the underlying data (CSV)