UK Petrol and Diesel Prices: Plan Your Autumn Drive

UK drivers can use the government’s weekly petrol and diesel averages as a starting point for estimating a long autumn drive, but the figures are not live prices at any particular forecourt. Check the latest release before travelling, then compare nearby stations and weigh any saving against the extra distance.

The latest UK fuel averages are a benchmark

The Department for Energy Security and Net Zero publishes weekly UK road-fuel price statistics, including average petrol and diesel prices. The supplied source information confirms that these series are available, but does not include the latest publication date or the current average prices. Those figures need to be checked on the official page at publication; no unverified numbers are given here.

See the government’s weekly oil and petroleum statistics for the latest release and its petrol and diesel series. Note the publication date as well as the prices: the weekly figures describe the period covered by that release, so they may not match what a driver sees later.

A national average helps with broad comparisons and trip estimates. It does not promise that a station will charge that amount, or show which forecourt is cheapest on a particular day.

Local pump prices can differ from the weekly average

Prices vary by station, region, fuel grade and time. Two forecourts a short distance apart can display different prices, and a station’s price can change after the weekly data was collected. Check the price for the fuel your vehicle uses and confirm it close to departure where possible.

The average is also not a quote for every driver. A vehicle requiring premium petrol, for example, may not be comparable with a standard petrol series. Use the government figures to set context, then use current local prices for a practical route decision.

Compare the saving with the detour

Start with the stations near your route, including those close to your starting point and any planned stops. For each option, estimate how many litres you expect to buy there and record the displayed price. Then account for the fuel used to reach a station that requires a detour.

A simple calculation is:

• Fuel saving: litres bought × price difference per litre.
• Detour fuel cost: extra miles ÷ vehicle miles per gallon × fuel price per litre, with the gallon converted to litres.
• Net saving: fuel saving minus detour fuel cost.

For a hypothetical example, suppose a driver plans to buy 40 litres. One station is 5 pence per litre cheaper, creating a £2 saving on the purchase. If reaching it adds a 6-mile round trip and the car averages 40 miles per imperial gallon, that detour uses about 0.68 litres. At a hypothetical fuel price of £1.45 per litre, the extra fuel costs about 99 pence, leaving roughly £1.01 before allowing for time or traffic. These are illustrative figures, not current UK prices.

If the cheaper station is already on the route, the detour cost may be negligible. If it means driving across town or leaving a motorway, recalculate using the extra distance and the car’s real-world fuel economy. A small per-litre difference can disappear quickly when the additional journey is long.

Make a useful estimate before setting off

Estimate the litres needed from your route distance and your vehicle’s typical fuel economy, allowing for traffic, cold starts and the load in the car. Then compare the current prices at a few convenient stations. Avoid treating the national weekly average as the price you will pay at the pump.

The government page’s next weekly release can change the national benchmark. For a decision today, the more immediate check is the current price at the stations you could reach without a costly detour.

Source: Department for Energy Security and Net Zero