Want to know where to pay less on fuel? Here are the cheapest prices for petrol and diesel in Ipswich today Morrisons in Sproughton Road, and the ASDA supermarkets in Stoke Park Drive and Goddard Road have the best price on unleaded petrol in Ipswich today at 1.167 per litre. If you are thinking of filling up today, here’s a list of the best prices in the Ipswich area according to online price index Petrol Prices.