Petrol and diesel prices at Lemar Service Station

Lemar Service Station, GL1 3PX.

What it is charging

Unleaded: 165.9p a litre, 5.8p under the national average, filed Monday 19 October
Diesel: 190.9p a litre, 7.8p under the national average, filed Monday 19 October

Asda Gloucester Supercentre: 165.7p a litre, 0.3 miles away. 0.2p a litre cheaper: saves 11p a tank, and costs about 11p of fuel to get there and back. Not worth the trip.
Asda Quedgeley Supermarket: 165.7p a litre, 3.5 miles away. 0.2p a litre cheaper: saves 11p a tank, and costs about £1.31 of fuel to get there and back. Not worth the trip.
Mfg Morrisons Gloucester Metz Way: 165.9p a litre, 0.3 miles away
Bristol Road: 165.9p a litre, 1.6 miles away
Mfg Longlevens: 166.9p a litre, 1.0 miles away
Sainsburys Barnwood: 166.9p a litre, 1.2 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.