What is the most fuel-efficient speed for a 4AT transmission?

1 Answers
LaKinsley
07/29/25 5:33pm
The transmission is a crucial component, besides the engine, that determines a vehicle's fuel consumption. The fuel consumption indicators of each car are related to factors such as engine type and displacement, transmission type, vehicle weight, fuel quality, etc. Therefore, the most economical speed for each car model is not solely dependent on the transmission type. Here is some additional information: Fuel efficiency: The key to saving fuel is controlling the engine's RPM. If driving on a highway, maintaining a constant speed, such as around 110 kilometers per hour throughout the journey, and avoiding braking and rapid acceleration as much as possible can help save fuel, as these actions may cause RPM fluctuations. For a 4AT transmission, these fluctuations become particularly noticeable.
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