What are the speed ranges for first, second, third, and fourth gears in a car?

[DiLilah]

First gear is the starting speed, typically ranging from 0 to 5 kilometers per hour. Second gear corresponds to speeds between 5 and 20 kilometers per hour. Third gear covers speeds from 20 to 40 kilometers per hour, while fourth gear is suitable for speeds between 40 and 60 kilometers per hour. Fifth gear is used for speeds ranging from 60 to 100 kilometers per hour. Optimal upshift timing: When the engine has ample power, it produces a muffled sound. After upshifting, if there is no power deficiency or drivetrain vibration, and the vehicle accelerates smoothly and naturally, it indicates the upshift timing is correct. Downshift timing: When the vehicle's speed and engine RPM continuously decrease, and you feel the car shaking or the engine compartment vibrating, it's time to downshift one gear. Downshifting too early can cause jerking, waste engine power, increase fuel consumption, and negatively impact the lifespan of the engine and transmission. Downshifting too late may result in insufficient power even after the gear change, leading to continued jerking during further downshifts. Misjudging the shift timing can cause irreversible consequences and affect the driving experience.