Petrol and diesel prices at Asda Derby Supercentre

Asda Derby Supercentre, DE21 7LW.

What it is charging

Unleaded: 168.7p a litre, 3.0p under the national average, filed Thursday 29 October

Costco Wholesale Derby: 164.9p a litre, 1.1 miles away. 3.8p a litre cheaper: saves £2.09 a tank, and costs about 41p of fuel to get there and back. Worth the trip.
Asda Kirk Hallam Express Petrol: 166.9p a litre, 4.8 miles away. 1.8p a litre cheaper: saves 99p a tank, and costs about £1.82 of fuel to get there and back. Not worth the trip.
Sainsburys Chaddesden: 168.9p a litre, 0.7 miles away
Mfg Morrisons Derby: 168.9p a litre, 2.7 miles away
Chaddesden Esso Express: 169.9p a litre, 1.2 miles away
Mfg Traffic: 169.9p a litre, 2.3 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.