St Mellons Service Station, ST. MELLONS SERVICE STATION, NEWPORT ROAD, OLD ST. MELLONS, CARDIFF, CF3 5UG, CARDIFF, CF3 5UG
As an Amazon Associate we earn from qualifying purchases.
CARDIFF
CF3 5UGGet Directions
Protect yourself on the road with a dash cam

Nextbase 322GW Dash Cam with Bluetooth & Emergency SOS
£99.99
Nextbase 222x Front and Rear Dash Cam
£69.99
Nextbase 222x Dash Cam Front and Rear Camera - Full HD 1080p Car Camera with Rear View Module - Intelligent Parking Mode, Night Vision, G-Sensor, 140° Wide Angle, 2.5" IPS Screen, Magnetic Mount
£69.99
VIOFO A119 V3 Dash Cam Front Camera Only - G-sensor Motion Detection GPS HDR Enhanced Night Vision Dash Camera - 140° Wide Angle, Compact 2.0'' LCD Screen In Car Camera for Cars
£89.99
Nextbase 522GW Dash Cam Front and Rear Camera - 2K 1440p Car Camera Dashcam - WiFi, GPS, Bluetooth, Night Vision, Voice Control, Parking Mode, Emergency SOS, IPS Touch Screen - 64GB Micro SD Included
£149.99As an Amazon Associate we earn from qualifying purchases. Prices may vary.
Compare St Mellons Service Station prices with nearby alternatives
| Station | Distance | Petrol | Diesel |
|---|---|---|---|
St Mellons Service Station This station | - | 149.9p | 175.9p |
ST MELLONS SUPERSTORE - PETROL FILLING STATION TESCO, CARDIFF | 0.4 mi | 145.9p | 167.9p |
ASDA PENTWYN SUPERSTORE ASDA, CARDIFF | 1.2 mi | 144.9p | 167.9p |
MFG CASTLETON ESSO, CASTLETON / CARDIFF | 1.3 mi | 149.9p | 175.9p |
WELCOME BREAK CARDIFF WELCOME BREAK, CARDIFF GATE | 1.4 mi | 159.9p | 186.9p |
Pentwyn Service Station Texaco, CARDIFF | 1.6 mi | 151.9p | 187.9p |
MFG MORRISONS CARDIFF NEWPORT ROAD MORRISONS, PEN-Y-LAN | 2.7 mi | 146.9p | 168.9p |
St Mellons Service Station is a St Mellons Service Station petrol station located on ST. MELLONS SERVICE STATION, NEWPORT ROAD, OLD ST. MELLONS, CARDIFF, CF3 5UG in CARDIFF (CF3 5UG).
CARDIFF has multiple fuel stations to choose from. There are 6 other stations within 10 miles of St Mellons Service Station, so it's worth comparing prices before filling up. Prices are sourced from official UK government data and update every 4 minutes.
St Mellons Service Station operates a network of fuel stations across the UK. Prices can vary between locations based on local competition and operating costs. You can compare all St Mellons Service Station prices on our St Mellons Service Station fuel prices page.
How much is petrol at St Mellons Service Station?
Petrol (E10) at St Mellons Service Station is currently 149.9p per litre. This is 0.8p below the UK national average of 150.7p. Prices are updated every 4 minutes from official UK government data.
How much is diesel at St Mellons Service Station?
Diesel at St Mellons Service Station is currently 175.9p per litre. This is 2.9p below the UK national average of 178.8p. Prices are updated every 4 minutes from official UK government data.
Is St Mellons Service Station the cheapest fuel station in CARDIFF?
To compare St Mellons Service Station with other stations in CARDIFF, visit our CARDIFF fuel prices page which ranks all stations by price. There are 6 other petrol stations within 5 miles of St Mellons Service Station.
What fuel types are available at St Mellons Service Station?
St Mellons Service Station sells Super Unleaded (E5), Petrol (E10), Diesel (B7). Prices for all available fuels are shown above and updated every 4 minutes.
What other petrol stations are near St Mellons Service Station?
There are 6 other petrol stations within 10 miles of St Mellons Service Station, including ST MELLONS SUPERSTORE - PETROL FILLING STATION (0.4 mi), ASDA PENTWYN SUPERSTORE (1.2 mi) and MFG CASTLETON (1.3 mi). Compare prices in the table above to find the best deal.
What are the opening hours of St Mellons Service Station?
St Mellons Service Station is open 24 hours a day, 7 days a week.
Where is St Mellons Service Station located?
St Mellons Service Station is located at ST. MELLONS SERVICE STATION, NEWPORT ROAD, OLD ST. MELLONS, CARDIFF, CF3 5UG, CARDIFF CF3 5UG. You can find directions using the "Get Directions" button above, which opens Google Maps navigation.
How often are fuel prices updated?
Fuel prices on Fuel Costs UK are updated every 4 minutes using official data from the UK government's Fuel Finder service. This ensures you always see the most current prices available for St Mellons Service Station.
About St Mellons Service Station Fuel Stations
How do St Mellons Service Station fuel prices compare?
St Mellons Service Station operates a network of fuel stations across the UK. Prices can vary between locations based on local competition and operating costs. Compare all St Mellons Service Station prices on our St Mellons Service Station fuel prices page.
Price Insights for St Mellons Service Station
What is the cheapest day to buy fuel at St Mellons Service Station?
Based on historic price data, Sunday tends to be the cheapest day to fill up at St Mellons Service Station, with an average petrol price of 131.9p per litre. Friday tends to be the most expensive at 145.9p on average.
How often does St Mellons Service Station change its fuel prices?
We have recorded 39 price changes at St Mellons Service Station over the past 48 days. This station changes its prices roughly every 4 days, which is a moderate update frequency indicating reasonable responsiveness to wholesale price movements.
What is the price range at St Mellons Service Station?
Since we started tracking on 7 February 2026, petrol prices at St Mellons Service Station have ranged from 131.9p to 149.9p per litre — a spread of 18.0p. View the full price history chart above to see how prices have changed over time.
Fuel Prices in CARDIFF
CARDIFF (CF3 postcode area) has multiple fuel stations to choose from. There are 6 other petrol stations within 5 miles of St Mellons Service Station, giving drivers plenty of choice for the best fuel prices. Fuel prices in CARDIFF are updated every 4 minutes from official government data. For a full comparison of all stations, visit our CARDIFF fuel prices page.