What speed should be driven in 4th gear?

1 Answers
LaRebecca
09/05/25 3:08am
4th gear is suitable for speeds between 40 to 50 kilometers per hour. When driving a manual transmission vehicle, the gear selection should match both the engine RPM and driving speed. Most car engines have an optimal fuel-efficient RPM range, and maintaining the RPM within this range while driving a manual transmission ensures smoother operation and better fuel economy. A manual transmission (MT), also known as a manual gearbox, requires the driver to manually shift gears by moving the gear lever to change the gear engagement inside the transmission, thereby altering the gear ratio to achieve speed variation. Working principle of manual transmission: The shift fork changes the transmission ratio (gear ratio) of the meshing gears, consequently modifying the driving torque to adapt to different operating conditions.
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