Petrol and diesel prices at Ascona Crossways Service Station

Ascona Crossways Service Station, SA73 1QZ.

What it is charging

Unleaded: 168.7p a litre, 3.0p under the national average, filed Thursday 29 October
Diesel: 193.7p a litre, 5.0p under the national average, filed Saturday 24 October
Super diesel: 209.9p a litre, filed Monday 19 October

Victoria Filling Station: 164.7p a litre, 2.7 miles away. 4.0p a litre cheaper: saves £2.20 a tank, and costs about £1.01 of fuel to get there and back. Worth the trip.
Asda Pembroke Dock Supermarket: 167.7p a litre, 2.1 miles away. 1.0p a litre cheaper: saves 55p a tank, and costs about 80p of fuel to get there and back. Not worth the trip.
Ascona Green Garage Service Station: 168.7p a litre, 3.5 miles away
Pembroke Dock Superstore - Petrol Filling Station: 169.9p a litre, 2.3 miles away
Rontec Haverfordwest: 169.9p a litre, 2.8 miles away

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.