Grantham Service Area, NG32 2AB. 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
Sainsburys Grantham: 168.9p a litre, 4.0 miles away. 26.0p a litre cheaper: saves £14.30 a tank, and costs about £1.53 of fuel to get there and back. Worth the trip.
Asda Grantham Superstore: 169.7p a litre, 3.4 miles away. 25.2p a litre cheaper: saves £13.86 a tank, and costs about £1.31 of fuel to get there and back. Worth the trip.
Mfg Archways: 169.9p a litre, 3.8 miles away. 25.0p a litre cheaper: saves £13.75 a tank, and costs about £1.46 of fuel to get there and back. Worth the trip.
Mfg Somerby Hill: 169.9p a litre, 4.5 miles away. 25.0p a litre cheaper: saves £13.75 a tank, and costs about £1.73 of fuel to get there and back. Worth the trip.
EG Grantham Pfs: 171.9p a litre, 3.4 miles away. 23.0p a litre cheaper: saves £12.65 a tank, and costs about £1.32 of fuel to get there and back. Worth the trip.
Rontec ST Leonards: 172.9p a litre, 4.3 miles away. 22.0p a litre cheaper: saves £12.10 a tank, and costs about £1.68 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.