Swansea Service Area, SA4 9GT. A motorway service area, where you have no choice.
What it is charging
Unleaded: 194.9p a litre, 23.2p over the national average, filed Friday 30 October
Diesel: 219.9p a litre, 21.2p over the national average, filed Friday 30 October
Super unleaded: 214.9p a litre, filed Friday 30 October
Super diesel: 239.9p a litre, filed Friday 30 October
Unleaded within 5 miles
Mfg Dunvant: 167.9p a litre, 4.0 miles away. 27.0p a litre cheaper: saves £14.85 a tank, and costs about £1.52 of fuel to get there and back. Worth the trip.
Nts Killay Service Station: 167.9p a litre, 4.0 miles away. 27.0p a litre cheaper: saves £14.85 a tank, and costs about £1.52 of fuel to get there and back. Worth the trip.
Sainsburys Swansea: 167.9p a litre, 4.6 miles away. 27.0p a litre cheaper: saves £14.85 a tank, and costs about £1.75 of fuel to get there and back. Worth the trip.
Swansea Cadle Extra - Petrol Filling Station: 168.9p a litre, 1.8 miles away. 26.0p a litre cheaper: saves £14.30 a tank, and costs about 69p of fuel to get there and back. Worth the trip.
Asda Swansea Superstore: 169.7p a litre, 3.6 miles away. 25.2p a litre cheaper: saves £13.86 a tank, and costs about £1.38 of fuel to get there and back. Worth the trip.
Tgc - Eagle: 169.9p a litre, 2.4 miles away. 25.0p a litre cheaper: saves £13.75 a tank, and costs about 92p of fuel to get there and back. 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.