Supermarket petrol prices drop in June… but which came out the cheapest?

In June, the big four supermarkets—Asda, Morrisons, Sainsbury’s, and Tesco—reduced their petrol and diesel prices by an average of 4p per litre. This brought the average cost down to 142p for petrol and 147p for diesel.

The price differences across these supermarkets' sites are notable. At Tesco, the variation is just 6p for petrol, whereas Morrisons sees a 10p difference. Sainsbury’s shows a 13p disparity, while Asda's gap is the widest at 35p, influenced by its acquisition of the 350 Euro Garages forecourts, bringing its total to 665 sites.

Diesel price differences are even more pronounced. Tesco again has the smallest range at 9p. Morrisons and Sainsbury’s have differences of 15p and 16p, respectively. Asda, however, has a significant 38p variation between its cheapest and most expensive sites.

Price of petrol

Asda, while offering the lowest minimum price, also has the highest average and maximum prices, suggesting a significant fluctuation in pricing.

Morrisons, Sainsbury's, and Tesco exhibit much tighter pricing ranges, with Tesco showing the least variation, indicating a more stable pricing strategy.

Customers looking for the cheapest fuel might gravitate towards Asda for potential savings, but should be wary of the potential for higher prices as well. Those preferring price stability might choose Tesco.