Unleaded: 171.9p a litre, 0.2p over the national average, filed Thursday 29 October
Unleaded within 5 miles
Commercial Street Service Station: 169.8p a litre, 4.1 miles away. 2.1p a litre cheaper: saves £1.15 a tank, and costs about £1.58 of fuel to get there and back. Not worth the trip.
Mfg Morrisons Newport Rogerstone: 169.9p a litre, 3.7 miles away. 2.0p a litre cheaper: saves £1.10 a tank, and costs about £1.42 of fuel to get there and back. Not worth the trip.
Mfg Morrisons Cardiff Newport Road: 169.9p a litre, 4.0 miles away. 2.0p a litre cheaper: saves £1.10 a tank, and costs about £1.54 of fuel to get there and back. Not worth the trip.
ST Mellons Superstore - Petrol Filling Station: 170.9p a litre, 1.7 miles away. 1.0p a litre cheaper: saves 55p a tank, and costs about 66p of fuel to get there and back. Not worth the trip.
Risca Extra - Petrol Filling Station: 170.9p a litre, 4.1 miles away. 1.0p a litre cheaper: saves 55p a tank, and costs about £1.59 of fuel to get there and back. Not worth the trip.
Cardiff Pengam Extra - Petrol Filling Station: 170.9p a litre, 4.4 miles away. 1.0p a litre cheaper: saves 55p a tank, and costs about £1.70 of fuel to get there and back. Not worth the trip.
On a 55-litre tank at 40mpg. The distance is straight-line rather than by road, so a real trip is longer than the one costed here.