In the middle of a hot summer day, many motorists wonder if the ambient temperature can affect the gasoline consumption of their vehicles. Let’s take a closer look at this issue to determine if there is a direct relationship between hot weather and increased fuel economy.
The impact of heat on the engine
Although it may seem counterintuitive, high ambient temperatures can affect the operation of a car engine. When it’s hot, the engine tends to warm up faster, which requires more energy to run properly and can translate into increased gas mileage.
Aerodynamic resistance and hot weather
Another aspect to consider is aerodynamic resistance in hot conditions. Warm air creates less resistance to vehicle movement than cold air. This implies that at higher speeds, the car may encounter less aerodynamic drag, resulting in higher fuel consumption.
The role of air conditioning and open windows
It is common to use the air conditioning or roll down the windows to combat the heat inside the vehicle. However, both actions can affect gas mileage. Specifically, the use of air conditioning has a significant impact on fuel consumption, especially when the outside temperature is high. In addition, humidity and the intensity of the sun can also influence its effectiveness. According to several studies, heavy use of air conditioning coupled with high temperatures can increase gasoline consumption by up to 25 percent.
Hybrid and electric vehicles in hot climates
It is important to note that hybrid, plug-in hybrid and fully electric vehicles are not exempt from the effects of heat on their energy efficiency. High temperatures can negatively affect the performance of lithium-ion batteries, reducing vehicle range and efficiency.
Tips to optimize fuel consumption in hot climates
If you want to maximize fuel efficiency in hot conditions, here are some practical recommendations:
- – Use the air conditioning sparingly and avoid settings colder than necessary.
- – When driving at low speeds, consider rolling down the windows instead of using the air conditioning to reduce drag.
- – Park the vehicle in shady areas or use sunscreens to prevent the interior from getting too hot.
- – Before turning on the air conditioning, allow hot air to escape from the vehicle by opening the windows for a few minutes.