September marks the turn from summer driving to the autumn fiscal season — the month UK drivers start watching two numbers: the pump price and the Chancellor's plans for fuel duty.
Quick answer: For today's exact averages see UK fuel prices today — updated every 15 minutes from ~8,500 forecourts. This page tracks the month's story: where prices settled after summer, and what the autumn Budget could mean.
Where prices stand after the summer
The summer of 2026 was kind to drivers: from the April–May peak (petrol ~163p, diesel ~187–189p), prices fell through June and July into the low 150s and mid 160s respectively. The monthly history table shows the full trend from our own tracked data, and the UK Fuel Price Report breaks today's picture down by nation, brand and town.
The autumn Budget question
Fuel duty has been frozen at 52.95p per litre since 2011, with the "temporary" 5p cut (from March 2022) still in place. Every autumn fiscal event revives the same question: does the cut survive?
The arithmetic for your wallet:
- If the 5p cut is scrapped: pump prices rise ~6p a litre overnight (5p duty + VAT on top) — about £3 per tank.
- If duty is frozen again: no change at the pump; the freeze itself costs the Treasury roughly £3bn a year, which is why it's never guaranteed.
- An inflation-linked rise (the official baseline assumption) would add roughly 2–3p a litre.
We'll update this page and the live dashboard the moment any change takes effect.
September strategy for drivers
- Check the live map before you fill — the town-level spread (often 10–15p/litre) dwarfs any monthly move: cheapest fuel near you.
- Diesel drivers: watch the premium. It typically widens into autumn as heating demand picks up; the dashboard tracks it daily.
- Fill before Budget day if a duty rise looks likely — it's one of the few times "panic buying" a tank is rational arithmetic.
- Set a free price-drop alert and let the falls come to you.
Live data, always
- UK fuel prices today — live national averages + monthly history
- Prices by nation: England · Scotland · Wales · Northern Ireland
- August's report — how the summer ended
For current figures always use the live pages above — this post frames the month; the site tracks the day.
Frequently Asked Questions
What is the average petrol price in the UK in September 2026?
September opened with petrol (E10) around the levels set over the summer — check Fuel Near You's live UK averages page for today's exact figure, calculated from thousands of live forecourt readings and updated every 15 minutes.
What is the average diesel price in the UK in September 2026?
Diesel (B7) remains several pence above petrol, as it has all year. See the live dashboard for today's precise average and how it compares with the summer months.
Will the autumn Budget change fuel prices?
Fuel duty (52.95p/litre, frozen since 2011 with the temporary 5p cut still in place) is reviewed at fiscal events. Any change feeds through to the pumps almost immediately — a 5p duty rise would add about 6p a litre including VAT.
Where is fuel cheapest in September 2026?
The usual pattern holds: Northern Ireland is the cheapest region, supermarkets undercut oil-brand forecourts by around 5p, and within any town the cheapest-to-dearest spread is often 10p+ a litre. Compare live prices near you before filling up.
Should diesel drivers expect higher prices this autumn?
Historically the diesel premium widens slightly into autumn and winter as heating-oil demand competes for the same refinery output. Watching the weekly trend on the live dashboard is more reliable than any forecast.