Cheapest unleaded at Costco
22 forecourts sell unleaded (E10). Cheapest first. "vs UK" is the gap to the national average for E10, in pence per litre.
Cheapest super unleaded at Costco
21 forecourts sell super unleaded (E5). Cheapest first. "vs UK" is the gap to the national average for E5, in pence per litre.
Cheapest diesel at Costco
22 forecourts sell diesel (B7). Cheapest first. "vs UK" is the gap to the national average for B7, in pence per litre.
Prices move most days. Save your stations in the app and get a push alert when your grade drops.
Turn on alertsWhat will a fill‑up cost?
Choose your car and grade. We price a fill at the cheapest Costco forecourt for that grade, or pick your own.
Save your car in the app and see this cost at every station near you.
Save my carHow Costco fuel works in the UK
Costco runs around 22 forecourts beside its UK warehouses. You need a valid membership card to unlock the pump, and it is pay at pump only.
Each warehouse prices against nearby rivals, so prices differ by site. Fuel is used as a loss leader to bring members back.
All UK petrol and diesel meets BS EN 228 and BS EN 590. Standard unleaded has been E10 since September 2021, and super unleaded is usually E5.
Get fuel delivered to your doorstep
Cars · vans · fleetsA licensed tanker fills your vehicle on your drive or at your yard. Unleaded, diesel and HVO, in a two‑hour window.
Common questions
How much is fuel at Costco today?
Across 22 Costco forecourts, unleaded averages 165.3p and diesel 190.0p. The table above lists each site, cheapest first.
Is super unleaded (E5) worth it?
For most cars, no. E10 is approved for almost every petrol car built since 2011. E5 matters for older and classic cars that can't take 10% ethanol, and some performance engines are tuned for its higher octane. At Costco today the cheapest E5 costs 12.0p a litre more than the cheapest E10.
Do you need a membership to buy fuel at Costco?
Yes. The pump needs a valid membership card.
How does Costco set its fuel prices?
Each warehouse prices against nearby rivals, so prices differ by site. Fuel is used as a loss leader to bring members back.
Does Costco have a fuel loyalty scheme?
None for fuel. Executive members get 2% reward on warehouse spend, check whether fuel counts.
Where do these prices come from?
Every forecourt in the UK must report its prices to the government's Fuel Finder scheme within 30 minutes of a change. We read the feed every 15 minutes and rebuild this page each morning.
Costco fuel prices by region
Cities with a Costco forecourt
Where these numbers come from
- Every UK forecourt reports its prices to the government's Fuel Finder scheme, for six grades: E10, E5, B7 standard, B7 premium, B10 and HVO.
- We take every Costco forecourt in the feed and keep the latest price for each grade it sells.
- "vs UK" compares each price with our UK average for the same grade: the mean across every forecourt with a price from the last 30 days.
- Forecourts report a price when it changes, so a price can stay current for days. Ranked prices unchanged for over two days show how long. Prices older than 30 days are shown with their age and left out of the rankings. Stations that don't sell a grade are left out of that grade's list, not shown at zero.
Prices change during the day. Check the pump before you fill.