Alan and Tina Valkeith who transport their pet St Bernard, Harley, in the sidecar of their motorbike, had ridden from Turves to fill up.
Alan said: “This is the best price we have found. We have to travel past here on the way into Peterborough, but it does make a difference when filling cheap jerseys up.”
He said: “It is very good value here. I do look out for the best prices when I am driving, so I come here quite often. It is worthwhile because it is cheap.”
A spokesman for the AA, Luke Bodset, said he was not surprised motorists were getting a better deal with independent firms.