How much is petrol at Costco today?

Costco unleaded averages 158.0p per litre across 22 UK stations today, and diesel averages 178.5p. Individual stations range from 153.9p to 161.9p. Updated 10 September 2026.

Is Costco petrol cheaper than average?

Costco unleaded averages 158.0p, which is 9.7p below the UK average of 167.7p — roughly £5.33 saved on a 55-litre tank.

Where is the cheapest Costco petrol station today?

The cheapest Costco station today is Costco Wholesale Watford in Watford at 153.9p per litre for unleaded. Costco forecourts are open to members only.

Home › Costco Petrol Prices

22 Stations · Members Only

Costco Petrol Prices Today

UK average across all brands: unleaded 167.7p · diesel 189.2p

Checked 10 September 2026 · retailer-reported prices, changes filed within 30 minutes

Costco trend: Unleaded ▲ 3.4p · 7d · Diesel ▲ 3.8p · 7d

UNLEADED (AVG)

158.0p

range across 22 Costco stations

DIESEL (AVG)

178.5p

range across 22 Costco stations

Cheaper Than the UK AverageCostco unleaded averages 9.7p below the UK average of 167.7p — about £5.33 saved on a 55-litre tank.

Costco unleaded averages 158.0p per litre across 22 UK stations today, 9.7p below the UK average of 167.7p. Diesel averages 178.5p. The cheapest Costco station today is 153.9p at Costco Wholesale Watford in Watford; the priciest is 161.9p at Costco Wholesale Stevenage in Stevenage — a spread worth £4.40 on a full tank. Costco forecourts are open to members only.

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How Costco Compares

vs UK average (unleaded)−9.7p lower

vs UK average (diesel)−10.7p lower

Cheapest Costco today153.9p

Priciest Costco today161.9p

Costco Prices by Town

Average Costco pump prices by town, cheapest first · checked 10 September 2026
Town	Stations	Unleaded	Diesel
Watford	1	153.9p	172.9p
Edinburgh	1	153.9p	172.9p
Oldham	1	153.9p	174.9p
Liverpool	1	155.9p	175.9p
Birmingham	1	155.9p	176.9p
Leeds	1	155.9p	177.9p
Westhill, Aberdeen	1	156.9p	180.9p
Coventry	1	157.9p	178.9p
Manchester	1	157.9p	176.9p
West Thurrock	1	157.9p	176.9p
Derby	1	158.9p	180.9p
Leicester	1	158.9p	178.9p
Glasgow	1	158.9p	179.9p
Sunbury-on-thames	1	158.9p	179.9p
Southampton	1	159.9p	180.9p
Bristol	1	159.9p	181.9p
Haydock	1	159.9p	178.9p
Reading	1	160.9p	183.9p
Gateshead	1	160.9p	178.9p
Chester	1	161.9p	183.9p
Stevenage	1	161.9p	180.9p