UK petrol prices have dropped to 131.6p per litre — the lowest since July 2021. Diesel sits at 140.8p. After years of volatility, record highs, and cost-of-living anxiety, drivers are finally catching a break. But what's behind the fall, and how long will it last?
Where We Are Now
To understand how we got here, it helps to look at how dramatically prices have moved over the past four years.
The Price Journey: 2022 to Now
That's a 60p drop from peak to today. On a 55-litre tank, you're paying roughly £33 less per fill-up than you were in June 2022.
What's Driving the Fall?
Several factors have aligned to push prices down simultaneously:
Cheap Oil
Brent crude fell below $60 per barrel in January 2026 — the first time since 2021. Weaker global demand, increased US production, and OPEC+ members breaking their own output limits have all contributed to an oversupplied market.
Duty Cut Still Active
The 5p fuel duty cut from March 2022 remains in place until August 2026. That's 5p per litre (plus 1p VAT on top) that you're not paying. Without it, petrol would be around 137.6p today.
Mild Winter
A warmer-than-average winter has reduced heating oil demand across Europe, putting downward pressure on the broader energy market. Less demand for refined products means lower wholesale costs for petrol and diesel.
Supermarket Competition
The big four supermarkets — Asda, Tesco, Sainsbury's and Morrisons — have been in a quiet price war, pushing petrol as low as 128p in some areas. Their thin margins force nearby branded stations to compete.
How Oil Price Becomes Pump Price
When crude oil falls by $10 per barrel, wholesale petrol costs drop by roughly 5–6p per litre. But because over half the pump price is fixed tax (duty + VAT), a 15% drop in oil only produces a 5–7% drop at the pump. Prices fall slower than they rise — the "rocket and feather" effect. For more on how this works, see our guide on how UK fuel prices are set.
Will Prices Stay Low?
Enjoy it while it lasts — but don't bank on it. There are several reasons prices could rise again in the second half of 2026:
- Fuel duty is rising from September — The 5p cut expires on 31 August, followed by phased increases of 1p (Sep), 2p (Dec), and 2p (Mar 2027). That adds ~6p per litre including VAT. Read the full timeline.
- Oil markets are unpredictable — OPEC+ could enforce tighter production limits. Geopolitical events — a Middle East escalation, further Russia sanctions — could spike prices overnight.
- Summer driving demand — Fuel consumption typically rises in summer as people take holidays and drive more. Higher demand pushes wholesale prices up.
- Refinery margins — Even when crude is cheap, tight refinery capacity can keep wholesale petrol and diesel prices elevated. This happened in 2022–23 and could happen again.
Mark Your Calendar
1 September 2026 is the key date. That's when the first fuel duty increase hits, and it's likely to coincide with post-summer pricing adjustments. If you're planning any large journeys or want to stock up (for those with storage), late August could be the sweet spot.
How to Make the Most of Low Prices
Low prices don't mean you should stop comparing. Even at 131.6p average, the regional spread is still 20–24p per litre. Here's how to maximise the current dip:
- Compare prices before every fill — Use Fuelwise to find the cheapest station near you. The difference between the best and worst in your area can still be 10–15p.
- Fill up fully when it's cheap — If you spot a particularly good price, fill your tank completely rather than topping up halfway. You're effectively locking in that low price.
- Stick to supermarkets — At 128–133p, supermarket forecourts are 4–8p below average. That's £2–£4 saved on every tank.
- Build good habits now — When duty rises from September, the drivers who already compare prices will barely notice. Those who don't will feel the full impact.
What the Drop Saves You
Compared to the June 2022 peak of 191.5p, today's 131.6p average saves you £32.95 per 55-litre tank. If you fill up weekly, that's £1,713 a year less than the worst of the crisis. Even compared to a year ago (~138p), you're saving around £183 a year.
The Bottom Line
UK fuel prices are at their most affordable level in four years thanks to a combination of cheap oil, a mild winter, supermarket competition, and the government's extended duty cut. It's genuine good news for drivers.
But the window won't stay open forever. Fuel duty increases from September, oil markets can turn on a headline, and summer demand will push prices up. The best thing you can do right now is develop the habit of comparing prices every time you fill up. When costs rise again — and they will — you'll already know where to find the cheapest fuel.