Petrol and diesel prices at Asda Norwich Superstore

Asda Norwich Superstore, NR6 5DT.

What it is charging

Unleaded: 169.7p a litre, 2.0p under the national average, filed Thursday 29 October

Enoch Fuels UK Ltd: 167.9p a litre, 2.2 miles away. 1.8p a litre cheaper: saves 99p a tank, and costs about 83p of fuel to get there and back. Worth the trip.
Progress Fuels Ltd: 168.7p 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.
Mfg Morrisons Norwich: 168.9p a litre, 2.7 miles away. 0.8p a litre cheaper: saves 44p a tank, and costs about £1.03 of fuel to get there and back. Not worth the trip.
Asda Norwich Hall Road Superstore: 169.7p a litre, 3.4 miles away
Earlham RD Express: 169.9p a litre, 1.8 miles away
Sainsburys Queens Road: 169.9p a litre, 2.6 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.