Morrisons shoppers can get 5p off every litre of petrol or diesel they purchase at the supermarket this April.
But to get the deal, customers need to spend £35 in store or online between today (April 13) and April 23.
After spending this amount, drivers will receive a coupon giving them 5p off every litre of fuel, which will be redeemable until May 1.
The coupon can be used at all Morrisons supermarket petrol stations, apart from those which are franchised.
Morrisons has 340 filling stations across the UK.
Rachel Eyre, chief customer and marketing officer at Morrisons, said: “We know that fuel remains a significant cost for many households and so this offer aims to help budgets go a little further.
“It is the third time we have run it this year and alongside our in store price cuts demonstrates our commitment to helping our customers with their household bills.”
The required £35 customer spend excludes the following items: fuel, tobacco, lottery products, café items, gift vouchers and cards, infant/formula milk, cash back, dry cleaning, fireworks, online games and instant tickets, photo printing, saver stamps, postage stamps, “top-up” mobile phone cards, delivery charges/pass, garden centre and pharmacy items.
For the full terms and conditions please visit: www.my.morrisons.com/fuel-offer.
The average price of unleaded petrol is currently 146.69p per litre, and 161.69p per litre for diesel, according to latest RAC figures.
Earlier this month, the RAC warned diesel is still "seriously overpriced" and said its wholesale price was "very similar" to petrol in March.
"In fact, diesel became cheaper than petrol on the wholesale market on March 23," said the RAC.
The motoring group calculates the average retailer margin on a litre of diesel at the end of March was 21p – three times the long-term average of 7p.
RAC fuel spokesman Simon Williams said: "While retailers are free to charge what they like for fuel we feel there should be an obligation on the those which sell the most, and therefore buy most frequently, to closely reflect what’s happening on the wholesale market.
"If this had been the case then the forecourt price of diesel would have been down to around 152p a litre, even with an above-average margin."