Overview
- A driving instructor named Dave from Red Driving School posted a TikTok tip on Wednesday urging drivers to turn off their car air conditioning and open windows to save fuel.
- He says avoiding air con reduces the engine load that drives higher summer fuel consumption caused by extra cooling demand and heat stress on vehicles.
- Experts and a 2004 Society of Automotive Engineers study caution that open windows increase aerodynamic drag and are generally more efficient only at about 45mph or below, while using air conditioning is usually better at higher speeds.
- The advice comes as UK forecourt prices remain well above pre‑February 28 levels because of tanker restrictions through the Strait of Hormuz and the government has extended a 5p per litre duty cut for the year.
- Motorists can get more economy by combining this tip with steady driving habits because harsh acceleration and heavy braking make the engine work harder and burn more fuel.