Total seem to be cheaper than the supermarkets again, according to Fuel Flash. I filled up at the Total in Toul (near Nancy) this morning at €2.09 per litre.
A bizarre system though, the pumps weren't pay at pump, you had to get to the punp, then go into the shop and get the card pre-authorised for an amount you specify. This, combined with being the cheapest in the arwa, resulted in a slow queue!