Is Fuel Consumption Related to Driving Speed?

1 Answers
DeQuinn
07/30/25 12:32am
The fuel consumption of a car is indeed related to speed. Driving too slowly consumes more fuel, and driving too fast also consumes more fuel. Different vehicles have an optimal fuel efficiency speed, generally between 80-120 km/h when driving at a constant speed, where fuel consumption is relatively lower. Below is relevant information: 1. Related to speed: The faster the car goes, the greater the wind resistance, leading to higher fuel consumption. 2. Related to RPM: Additionally, if the engine's RPM is too high, internal consumption also increases. Therefore, when driving at low speeds (0-80 km/h), faster speeds can actually save fuel, whereas when driving above 120 km/h, the faster the speed, the higher the fuel consumption.
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