From an article in La Nouvelle République yesterday on variations in the price of fuel and three sites that help you to find the cheapest fuel in a locality. For instance a litre of diesel at Super U in Montrichard is 1.179€, at Carrefour in Faverolles-sur-Cher it is 1.182€ while at the Total garage (Relais des Carrières on the D976) it is 1.306€.
www.prix-carburants.gouv.fr
www.zagaz.com
www.carbu.fr (Carbeo.com)