Local price scan
Cheapest petrol and diesel prices in Llanishen
1 tracked forecourt in Llanishen, last updated 29 September 2026. Prices are pence per litre.
Unleaded petrol (E10)
173.9p
cheapest · 173.9p average across 1 station
Diesel (B7)
199.9p
cheapest · 199.9p average across 1 station
Super unleaded (E5)
189.9p
cheapest · 189.9p average across 1 station
Llanishen price history
Daily average standard petrol and diesel prices across tracked local stations over the last 90 days.
Llanishen stations ranked by price
| MFG MORRISONS CARDIFF TYGLASSMORRISONS · CF14 5EP | 173.9p | 199.9p | 189.9p |
|---|
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Where these stations are
What drivers in Llanishen should know
We are still building a full price picture for Llanishen. As more forecourts report, this page will show the local spread between the cheapest and dearest pumps.
At 173.9p the average unleaded petrol (e10) price in Llanishen is below the UK-wide average of 174.7p that PumpScan is tracking, a difference of 0.8p per litre.
Brands represented locally include MORRISONS. Supermarket forecourts usually undercut motorway services by a wide margin, and prices in and around Llanishen 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 Llanishen against the rest of the country on the cheapest petrol in the UK and cheapest diesel in the UK leaderboards.
All filling stations in Llanishen
Looking elsewhere? See all areas covered by PumpScan UK. Area slug: /petrol-prices/llanishen