Local price scan
Cheapest petrol and diesel prices in Cardiff Bay
1 tracked forecourt in Cardiff Bay, last updated 3 October 2026. Prices are pence per litre.
Unleaded petrol (E10)
172.9p
cheapest · 172.9p average across 1 station
Diesel (B7)
197.9p
cheapest · 197.9p average across 1 station
Super unleaded (E5)
189.9p
cheapest · 189.9p average across 1 station
Cardiff Bay price history
Daily average standard petrol and diesel prices across tracked local stations over the last 90 days.
Cardiff Bay stations ranked by price
| MFG MORRISONS CARDIFF BAYMORRISONS · CF11 0JP | 172.9p | 197.9p | 189.9p |
|---|
Click a column heading to sort by that fuel — click again to flip the order.
Where these stations are
What drivers in Cardiff Bay should know
We are still building a full price picture for Cardiff Bay. As more forecourts report, this page will show the local spread between the cheapest and dearest pumps.
At 172.9p the average unleaded petrol (e10) price in Cardiff Bay is below the UK-wide average of 174.7p that PumpScan is tracking, a difference of 1.8p per litre.
Brands represented locally include MORRISONS. Supermarket forecourts usually undercut motorway services by a wide margin, and prices in and around Cardiff Bay tend to move within a day or two of a change in the wholesale oil price. Filling up mid-week and avoiding a near-empty tank on a motorway trip are the two simplest ways to keep costs down.
Compare Cardiff Bay against the rest of the country on the cheapest petrol in the UK and cheapest diesel in the UK leaderboards.
All filling stations in Cardiff Bay
Looking elsewhere? See all areas covered by PumpScan UK. Area slug: /petrol-prices/cardiff-bay