Cheapest petrol near SO18
Cheapest petrol in SO18, Southampton
Updated 28 August 2026. Prices from the official Fuel Finder open data, refreshed twice a day.
The cheapest petrol near SO18 right now is 155.9p at Costco Wholesale Southampton, SO15 8TA. Typical petrol across the 35 forecourts within five miles is 162.9p a litre and diesel 184.9p. The spread here is 6.0p a litre, which is £3.30 on a 55 litre tank, so where you fill up matters.
Cheapest petrol near SO18 today
Cheapest diesel near SO18 today
Every price is the forecourt's own submission to the Fuel Finder scheme, ranked green for the cheapest through to red for the dearest within five miles of the district centre. Enter your full postcode on the home page for the exact forecourts around you, or set a free alert for when the price near you drops.
Common questions about petrol in SO18
How much is petrol in SO18 today?
The typical petrol price within five miles of SO18 is 162.9p a litre as of 10:00 on 28 August 2026, and the cheapest we can see is 155.9p at Costco Wholesale Southampton, SO15 8TA. That is about £89.59 for a 55 litre tank at the typical price.
Where is the cheapest petrol near SO18?
Right now the lowest price near SO18 is 155.9p at Costco Wholesale Southampton, SO15 8TA. Supermarket forecourts are usually close behind. Enter your full postcode in the search for the exact forecourts around you.
How much is diesel in SO18?
Typical diesel within five miles of SO18 is 184.9p a litre, and the cheapest is 176.9p at Costco Wholesale Southampton, SO15 8TA.
How current are these prices?
Forecourts must report a change to the official Fuel Finder scheme within 30 minutes, and this page is rebuilt twice a day. It was last updated at 10:00 on 28 August 2026.