Petrol and diesel prices at Asda Harworth Supermarket

Asda Harworth Supermarket, DN11 8AB.

What it is charging

• Unleaded: 171.9p a litre, 0.2p over the national average, filed Tuesday 27 October

Unleaded within 5 miles

• Asda Rossington Supermarket: 170.7p a litre, 4.2 miles away. 1.2p a litre cheaper: saves 66p a tank, and costs about £1.62 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.