Utilizing the window trick, especially on long journeys, can lead to substantial savings. Tests have shown that you can save up to 35 euros per tank of fuel on a long-distance trip by using this method.
Conclusion:
The window trick is a simple, yet effective way to reduce fuel consumption without sacrificing comfort. By managing your window and air conditioning usage based on your driving speed, and following additional fuel-saving practices, you can minimize fuel costs significantly, which is particularly beneficial given the current high fuel prices.