Fuel Prices in Llanishen, Cyncoed, Pentwyn, Penylan, Pontpre...
Live comparison for CF23 area. Tracking 7 stations across 26 brands. For a detailed breakdown including 7-day price trends, market competition analysis, and savings tips, and also find Today’s Cheapest Petrol and Diesel in Llanishen, Cyncoed, Pentwyn, Penylan, Pontprennau, Old St Mellons .
Wales
7 Stations
7 Brands
Updated 19 Mar 2026
View Llanishen, Cyncoed, Pentwyn, Penylan, Pontprennau, Old St Mellons on the Fuel Map
Compare all 7 stations visually on our interactive map to find the cheapest fuel near your route.
7-Day Price Movement
Petrol (E10)
139.4p
142.9p
Diesel (B7)
157.2p
163.3p
Cheapest Today
Area Averages vs National
Petrol
144.3p
▲ 0.3p vs UK Avg
Super Unleaded
161.3p
▼ 0.5p vs UK Avg
Diesel
161.6p
▼ 3.7p vs UK Avg
Super Diesel
178.2p
▼ 7.6p vs UK Avg
All Fuel Stations in Llanishen, Cyncoed, Pentwyn, Penylan, Pontprennau, Old St Mellons (CF23)
Frequently Asked Questions About Fuel in Llanishen, Cyncoed, Pentwyn, Penylan, Pontprennau, Old St Mellons
As of 19 March 2026, the cheapest E10 petrol in Llanishen, Cyncoed, Pentwyn, Penylan, Pontprennau, Old St Mellons is 141.9p at ASDA, 8 DERING ROAD, PONTPRENNAU, CARDIFF, WALES.
There is currently a 9.0p difference between the cheapest and most expensive stations in Llanishen, Cyncoed, Pentwyn, Penylan, Pontprennau, Old St Mellons. For a standard 55-litre family car, that equals a saving of £4.95 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 Cardiff area.
Not today. ASDA is actually cheaper than local supermarkets in CF23. It's always worth comparing before filling up.
We are currently tracking 7 active fuel stations in the CF23 area, operated by 7 different brands including ASDA, TEXACO, ESSO and more.
The cheapest B7 diesel in Llanishen, Cyncoed, Pentwyn, Penylan, Pontprennau, Old St Mellons is currently 156.9p at ASDA. You can also use our interactive fuel map to compare diesel prices visually.
Nearby Locations
Rumney, Trowbridge, Llanrumney, St Mellons, Castleton, Marshfield (CF3)
Non-geographic (CF30)
Cardiff (CF2)
Cardiff city centre, Cathays, Roath, Plasnewydd, Splott, Adamsdown (CF24)
Non-geographic (CF95)
Whitchurch, Thornhill, Lisvane, Rhiwbina, Pantmawr, Gabalfa, Heath, Llandaff North (CF14)
Non-geographic (CF99)
Cardiff city centre, Grangetown, Cardiff Bay, Butetown (CF10)
Prices sourced from the UK Government CMA Open Data Scheme, updated every 30 minutes. CheckFuelPrices is editorially independent — read our policy.