Asger Risom
With another heatwave set to bring temperatures above 30°C, motorists are being urged to use their car’s air conditioning more efficiently to stay cool without wasting fuel. Experts warn that common mistakes could increase fuel consumption by up to 10%.
With another heatwave set to bring temperatures above 30°C, motorists are being urged to use their car’s air conditioning more efficiently to stay cool without wasting fuel. Experts warn that common mistakes could increase fuel consumption by up to 10%.
Fourth UK Heatwave of the Year Approaches
The Met Office forecasts scorching conditions for central and southern England, with temperatures expected to top 30°C for several days.
Air Con Can Increase Fuel Use on Short Trips
Experts say using air conditioning on short journeys can raise fuel consumption by around 10%, as the system works harder to cool the air.
Why Blasting Air Con Wastes Energy
Air conditioning systems take time to chill the refrigerant and replace warm air, especially if the car has been parked in direct sunlight.
Parking Smart Can Help Keep Cars Cooler
Drivers are advised to park in the shade or use sunshades to reduce cabin heat, making it easier for the air con to cool the car quickly.
Open Windows for Low-Speed Cooling
On short trips or at speeds under 40mph, opening windows is more efficient than using air con, saving fuel and reducing strain on the system.
When to Switch to Air Con
At higher speeds, open windows create drag, forcing the engine to work harder. In these cases, using air con is the more efficient choice.
Air Out the Cabin Before Cooling
Rolling down windows or opening doors before turning on air con can help release hot air, allowing the system to work faster and more effectively.
Keep Windows Closed When AC Is On
Driving with windows open while the air con is running allows cool air to escape, making the system less effective and increasing fuel use.
