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Does air con use more fuel?

Despite many believing this is a common misconception, air con does in fact increase your fuel consumption. Research has found that by using your air conditioning to control the climate of your vehicle, you can actually increase your fuel consumption by around 8-10%.

Air con vs open windows

Although air conditioning increases your fuel consumption, driving with your windows open can also lead to a reduce in fuel efficiency. This is because the air from the window creates a 'drag' for the vehicle, meaning the engine must work harder to pull the vehicle due to the resistance created by the open window.

So, which is more fuel efficient - opening your windows, or using your air conditioning? Research suggests that you should base it on the speed you're travelling. For example:

Other ways to improve fuel consumption

Looking for more ways to improve your fuel consumption? As well as following the above guidelines when it comes to using your air conditioning and opening your windows, some other tips to improve fuel efficiency include:

For more information on how air conditioning uses more fuel, get in touch with our experts here at PTA Garages. Alternatively, ensure your air conditioning is in the best condition it can be is important - so make sure you familiarise yourself with our air conditioning services.