SO postcodes, prices updated 10:00 on 28 August 2026
Cheapest petrol and diesel in Southampton today
Typical petrol across the Southampton postcode area is 163.9p a litre and diesel 185.9p, from 76 forecourts. The cheapest petrol we can see is 155.9p at Costco Wholesale Southampton (members only), SO15 8TA. Southampton ranks 20 of 20 cities for cheap petrol today. Search your own postcode for the exact five miles around you.
Petrol (E10)
The ten cheapest petrol forecourts in the Southampton area
Ranked by the forecourt's own reported price. The spread between the cheapest and the tenth is 4.0p a litre, £2.20 on a 55 litre tank. Each price shows when the forecourt set it.
Diesel (B7)
The ten cheapest diesel forecourts in the Southampton area
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Questions
Southampton fuel prices, answered
How much is petrol in Southampton today?
The typical E10 petrol price across the SO postcode area is 163.9p a litre as of 10:00 on 28 August 2026, with the cheapest forecourt at 155.9p. That is about £90.14 for a 55 litre tank at the typical price.
Where is the cheapest petrol in Southampton?
Right now the lowest E10 price in the area is 155.9p at Costco Wholesale Southampton (members only), SO15 8TA. Supermarket forecourts are usually close behind. Use the search above with your own postcode for the exact five miles around you.
How much is diesel in Southampton?
Typical B7 diesel across the area is 185.9p a litre, and the cheapest diesel we can see is 176.9p at Costco Wholesale Southampton, SO15 8TA.
How current are these prices?
Forecourts have to report a change within 30 minutes and this page is rebuilt twice a day; it was last updated at 10:00 on 28 August 2026. Each price shows when the forecourt set it.
Other cities
Typical petrol elsewhere today
Postcode areas reach beyond the city itself, so each figure is the median of every forecourt in those postcodes. Full ranking on the front page.