Petrol and diesel prices at East Port Service Station

East Port Service Station, KY14 6HA.

What it is charging

• Unleaded: 176.9p a litre, 5.2p over the national average, filed Saturday 24 October

Unleaded within 5 miles

• Inchmichael Forecourt: 170.9p a litre, 4.5 miles away. 6.0p a litre cheaper: saves £3.30 a tank, and costs about £1.74 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.