What is the most fuel-efficient temperature to set the car air conditioning at?

1 Answers
LondynRose
07/30/25 5:50am
The most fuel-efficient cabin temperature is 26°C. Proper air conditioning usage tips: 1. Optimal timing for turning on AC: First action after entering the car should be opening windows and activating the AC's external circulation to expel hot air. Switch to internal circulation after cabin temperature drops. 2. Turn off AC during prolonged parking: When cabin temperature becomes comfortable, temporarily turn off AC and open windows for ventilation. 3. Never turn off engine before AC: Several minutes before reaching destination, turn off AC while activating natural air flow to normalize AC pipeline temperature and eliminate temperature differentials, maintaining system dryness. 4. Alternate between internal/external circulation: Internal circulation can be used but not continuously. Initially use external circulation when starting AC, switch to internal after cooling, then periodically alternate between both modes.
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