Exeter Service Area, EX2 7HF. 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
Redlands Service Station: 168.9p a litre, 1.5 miles away. 26.0p a litre cheaper: saves £14.30 a tank, and costs about 57p of fuel to get there and back. Worth the trip.
Ascona Exton Service Station: 169.7p a litre, 3.1 miles away. 25.2p a litre cheaper: saves £13.86 a tank, and costs about £1.19 of fuel to get there and back. Worth the trip.
Mfg Oaklands Sidmouth: 172.9p a litre, 4.4 miles away. 22.0p a litre cheaper: saves £12.10 a tank, and costs about £1.72 of fuel to get there and back. Worth the trip.
Mfg Birchy Barton: 174.9p a litre, 1.2 miles away. 20.0p a litre cheaper: saves £11.00 a tank, and costs about 47p of fuel to get there and back. Worth the trip.
Mfg Morrisons Exeter: 174.9p a litre, 2.2 miles away. 20.0p a litre cheaper: saves £11.00 a tank, and costs about 87p of fuel to get there and back. Worth the trip.
Exeter Vale Extra - Petrol Filling Station: 175.9p a litre, 1.0 miles away. 19.0p a litre cheaper: saves £10.45 a tank, and costs about 39p 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.