Does Running AC in a Car Reduce Mileage? Here’s What Experts Say

As winter fades and the weather starts to improve, the rising temperatures will soon make air conditioning (AC) a necessity for car travelers. While switching on the AC makes every journey more comfortable, one common question that often crosses people’s minds is—Does running the AC reduce a car’s mileage? Let’s find out.

How Does a Car’s AC System Work?

When the AC is turned on, the compressor pressurizes the refrigerant gas, converting it into liquid. This liquid absorbs heat from the cabin air and releases it outside, cooling down the air inside the vehicle. The receiver-dryer removes moisture, making the air even cooler. Since the AC compressor is powered by the car’s engine, its operation requires additional energy, which can slightly impact fuel consumption.

Does Turning on the AC Reduce Fuel Efficiency?

The simple answer is yes, but not significantly. According to auto expert Tootu Dhawan, using the AC does increase fuel consumption, but the impact varies based on travel distance and duration.

  • For short distances, the mileage drop is negligible.
  • For long trips (3-4 hours of continuous AC use), fuel efficiency can decrease by 5-7%.

How to Use Car AC Smartly to Maintain Mileage?

Experts suggest a few smart practices to balance comfort and fuel efficiency:

Use AC to cool the cabin, then switch it off intermittently to maintain a comfortable temperature.
Avoid running the AC at full blast, as it increases fuel consumption and can also affect health.
Open windows occasionally to allow fresh air circulation, reducing the need for continuous AC usage.
Get your AC serviced and cleaned regularly to improve efficiency and cooling performance.

By following these simple tips, you can enjoy a comfortable ride without significantly compromising your car’s mileage. 🚗💨

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