Costco fuel prices
Costco sells fuel to members only. Costco forecourts charge an average of 166.0p a litre for unleaded today across 22 UK sites, 8.2p below the UK average. Like for like, a typical Costco forecourt is 8.0p cheaper than other brands within 3 miles, and cheaper than them at 100% of sites. Diesel averages 190.2p. Updated UK time.
Median gap to other brands within 3 miles. Ranked 1 of 26 brands.
Of 22 forecourts with rivals nearby. Cheapest locally at 95%.
−8.2p vs UK average (174.2p).
−9.0p vs UK average.
What the figures show
- Price range. Most Costco forecourts charge between 162.9p and 168.8p for unleaded; the full range runs from 161.9p to 170.9p. That’s a tight band, which suggests fairly consistent pricing.
- How often prices change. Half of Costco’s current unleaded prices were set in the last 4 days.
- Cheapest in town. Costco has the lowest unleaded price in 14 towns Tank Prices covers today.
Costco prices over time
Daily average for the same forecourts throughout, against the UK average.
Unleaded 22 forecourts
- Costco 166.0p ±0.0p since 14 Oct
- UK average 174.2p −0.1p since 14 Oct
Show the figures
| Day | Costco | UK average |
|---|---|---|
| Latest | 166.0p | 174.2p |
| 16 Oct | 166.0p | 174.2p |
| 15 Oct | 166.0p | 174.3p |
| 14 Oct | 166.0p | 174.4p |
Diesel 22 forecourts
- Costco 190.2p −0.2p since 14 Oct
- UK average 199.2p −0.2p since 14 Oct
Show the figures
| Day | Costco | UK average |
|---|---|---|
| Latest | 190.2p | 199.2p |
| 16 Oct | 190.2p | 199.2p |
| 15 Oct | 190.5p | 199.3p |
| 14 Oct | 190.5p | 199.4p |
Tank Prices’ price history starts 14 October 2026; earlier prices aren’t estimated.
Cheapest Costco forecourts
Towns where Costco is cheapest
Costco has the lowest reported unleaded price in these towns today.
Compare with similar brands
Brands ranked next to Costco like for like.
- Sainsbury’s−2.8p vs local rivals
- Morrisons−2.2p vs local rivals
- Go−2.0p vs local rivals
- Tesco−1.9p vs local rivals
About these figures
Prices are the latest each Costco forecourt reports to the government’s Fuel Finder scheme; closed sites are excluded. Supermarket forecourts are grouped by retailer, whatever fuel brand is on the canopy. Averages aren’t weighted by sales. Local comparisons use other brands’ forecourts within 3 miles in a straight line. How we compare brands.