Supermarkets are prompting customers to spend more in-store and receive money-saving offers that can be reclaimed at their fuel pumps.
Shoppers at Sainsbury's are being offered 10p off every litre of fuel when they spend £60 or more in store and via their store's website.
Mike Coupe, commercial director of Sainsbury's Group, said: "Customers tell us that they are already starting to stock up for Christmas so we are sure that this fantastic promotion will be welcome news for families at what can be an expensive time of year."
Morrisons followed Sainsbury's footsteps by launching Fuel Britannia, an offer which gives customers who spend £40 in store 6p off every litre.
The offer is available for a week and must be claimed within two weeks.
Tesco made the first move in this round price cutting last Friday when it announced shoppers spending £50 or more are eligible for a 5p discount voucher on fuel.
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