Petrol and diesel prices at Asda Stevenage Supercentre

Asda Stevenage Supercentre, SG1 1LA.

What it is charging

Unleaded: 169.7p a litre, 2.0p under the national average, filed Monday 26 October
Diesel: 192.7p a litre, 6.0p under the national average, filed Sunday 18 October

Costco Wholesale Stevenage: 166.9p a litre, 1.0 miles away. 2.8p a litre cheaper: saves £1.54 a tank, and costs about 37p of fuel to get there and back. Worth the trip.
Mfg Stevenage: 169.9p a litre, 0.7 miles away
Sainsburys Coreys Mill: 169.9p a litre, 2.0 miles away
Stevenage Extra - Petrol Filling Station: 170.9p a litre, 0.4 miles away
Asda Stevenage Express Petrol: 170.9p a litre, 0.7 miles away
Asda Broadwater Express Petrol: 171.9p a litre, 0.9 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.