Tesco, Asda, Morrisons, and Sainsbury's drivers advised to avoid using car AC to reduce fuel consumption.

Tesco, Asda, Morrisons, and Sainsbury's drivers have been warned to avoid using car air conditioning, as it increases fuel consumption. Air conditioning and heating systems use engine power, leading to higher fuel bills. A study found that air conditioning on hybrid cars reduces fuel efficiency by 6.1% on average. Other tips to save on fuel include reducing car weight, finding cheaper petrol stations, and avoiding idling.