Petrol and diesel prices at CKs Supermarket

CKs Supermarket, SA71 5NW.

What it is charging

Unleaded: 170.1p a litre, 1.6p under the national average, filed Thursday 22 October

Asda Pembroke Dock Supermarket: 167.7p a litre, 3.6 miles away. 2.4p a litre cheaper: saves £1.32 a tank, and costs about £1.37 of fuel to get there and back. Not worth the trip.
Ascona Green Garage Service Station: 168.7p a litre, 2.2 miles away. 1.4p a litre cheaper: saves 77p a tank, and costs about 84p of fuel to get there and back. Not worth the trip.
Pembroke Dock Superstore - Petrol Filling Station: 169.9p a litre, 3.3 miles away. 0.2p a litre cheaper: saves 11p a tank, and costs about £1.27 of fuel to get there and back. Not 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.