How Much Difference in Fuel Consumption Between Automatic and Manual Transmissions of the Same Displacement?

[MaryLee]

For automatic and manual transmissions of the same displacement, manual transmissions consume slightly less fuel than automatic ones. The specific difference in fuel consumption depends on the engine speed. Driving Habits: Incorrect driving habits have the greatest impact on fuel consumption. During driving, especially in heavy traffic, at red lights, or when changing lanes, sudden acceleration and hard braking are the most common issues. When the vehicle enters the test section at a constant speed, it was found that fuel consumption can increase by 2 to 3 times compared to driving at a steady speed. Road Conditions: Congested roads or uneven surfaces that force the vehicle to operate in lower gears for extended periods will increase fuel consumption.