Frequently Asked Questions About Fuel in Belfast, Castlereagh, Crossnacreevy, Gilnahirk, Knock
As of 7 August 2026, the cheapest E10 petrol in Belfast, Castlereagh, Crossnacreevy, Gilnahirk, Knock is 145.9p at SAINSBURY'S, 10 RIVERSIDE REGIONAL CENTRE, COLERAINE, NORTHERN IRELAND.
There is currently a 20.0p difference between the cheapest and most expensive stations in Belfast, Castlereagh, Crossnacreevy, Gilnahirk, Knock. For a standard 55-litre family car, that equals a saving of £11.00 per tank.
We update prices daily using data provided directly by fuel stations via the Competition and Markets Authority (CMA) Open Data scheme. This is a UK Government initiative requiring all major retailers to report live prices, ensuring you see the most accurate data for the Belfast area.
Not today. SAINSBURY'S is actually cheaper than local supermarkets in BT5. It's always worth comparing before filling up.
We are currently tracking 43 active fuel stations in the BT5 area, operated by 23 different brands including Maxol, SOLO, Texaco and more.
The cheapest B7 diesel in Belfast, Castlereagh, Crossnacreevy, Gilnahirk, Knock is currently 158.7p at ASDA. You can also use our interactive fuel map to compare diesel prices visually.