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August 24, 2026

UK Fuel Price Watch: Petrol and Diesel Under Pressure at Forecourts

Summary for busy readers

With Brent crude holding firm and refining margins remaining elevated, UK motorists continue to face high forecourt costs. Petrol averages around 161.1p/l while diesel trades at a significant premium near 181.4p/l. Discover our full market analysis, tax breakdown, and pump price forecast for the weeks ahead.

UK Fuel Price Watch: Petrol and Diesel Under Pressure at Forecourts

Fuel costs remain a major expense for UK households, commuters, and logistics fleets. Driven by volatile global crude markets and persistent refining spreads, retail forecourt prices continue to hover near elevated levels.

Here is a full breakdown of average forecourt prices across the UK and the outlook for the coming weeks.

1. Current UK Forecourt Averages

According to official weekly tracking data (DESNZ / RAC Fuel Watch / PetrolPrices), current UK national pump averages stand as follows:

Fuel TypeUK National AverageSupermarket AverageRecent Trend (14-day)
Unleaded Petrol (E10)161.1p / l~157.5p – 158.3pSteady / Slight Pressure
Standard Diesel (B7)181.4p / l~176.9p – 177.5pFirm / High Premium
Super Unleaded (E5)178.7p / l~172.0p – 174.0pStable
Premium Diesel199.9p / l~192.0p – 194.5pFirm
Autogas (LPG)92.5p / lN/A (limited network)Stable

Key Market Observations:

  • The Diesel-Petrol Spread: Diesel currently commands an average premium of ~20p per litre over standard unleaded, largely reflecting tighter distillate supplies across Europe and heavier seasonal commercial demand.
  • Supermarket vs. Branded Forecourts: Supermarkets (Asda, Tesco, Morrisons, Sainsbury's) continue to offer a 3.5p to 5.0p per litre discount compared to national branded oil company sites, representing a saving of £2.00 to £2.80 on a typical 55-litre tank.

2. Market Drivers: What Shapes the Price at UK Pumps?

Pump prices in the UK are driven by a combination of global commodities, currency exchange, and domestic taxation:

  • Brent Crude Benchmark ($90–$93/barrel): Global oil prices remain underpinned by geopolitical risk premiums in the Middle East and strategic OPEC+ production management.
  • The Sterling/Dollar Exchange Rate (£/$ ): Because crude oil and wholesale refined fuels are traded globally in US dollars, any depreciation of the British pound makes wholesale fuel replenishment more expensive for UK distributors.
  • The UK Tax Burden (Fuel Duty & VAT):
    • Fuel Duty: Levied at a flat rate of 52.95p per litre on both petrol and diesel (maintaining the temporary 5p cut).
    • VAT: Charged at 20% on both the wholesale product cost and the Fuel Duty itself.
    • Combined, taxation accounts for nearly 48% to 50% of the total price paid at the pump.
  • Retail Margins & "Rocket and Feather" Pricing: Scrutiny from the Competition and Markets Authority (CMA) continues regarding the speed at which wholesale price drops are passed on to retail forecourts.

3. Forecast and Market Outlook for the Coming Weeks

Over the next 3 to 6 weeks:

  • Petrol (Unleaded E10): Expected to fluctuate within a range of 159p – 164p per litre, moving in close correlation with international Brent movements and retail margin adjustments.
  • Diesel (B7): Wholesale refining margins for middle distillates remain tight. Unless global supply conditions ease, diesel is likely to remain locked in the 179p – 185p per litre bracket.
  • Consumer Advice: Motorists are advised to utilize local comparison tools and route planners to locate competitive supermarket and independent forecourts before refuelling, avoiding costly motorway service areas where prices typically exceed 180p for petrol and 200p for diesel.
Written by
The Cheapfill.uk Team
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