Tesco, which is Britain's biggest grocer and supermarket chain, has more than 4,000 stores and is rivalled by the likes of Sainsbury's, Asda, Morrisons, Lidl, Aldi and more.
Drivers who fill up at Asda are being warned by the RAC that the average is now 147.9p, with the lowest 139p and highest 175p - a whopping 36p difference.
Tesco is one of the biggest supermarket brands in the UK, with millions of people shopping in its stores every day - but few know the meaning behind the name