AC vs. Open Windows: The Surprising Truth About Car Fuel Consumption

• Driving with windows open on the highway can consume more petrol than using the AC due to aerodynamic drag.
• At high speeds (over 60-80 km/h), open windows create drag, forcing the engine to work harder.
• In city traffic at low speeds (under 40 km/h), keeping windows open might save petrol compared to using AC.
• A study by the Society of Automotive Engineers (SAE) confirms AC use on highways is more fuel-efficient.
• Tips to save petrol include parking in shade, airing out the car first, regular AC servicing, and setting AC to 24°C.