What is the maximum speed for 4th gear?
2 Answers
Generally, 4th gear can be used at speeds between 10 to 50 kilometers per hour, but this is not a strict rule. When driving a manual transmission vehicle, the gear should match the engine RPM and driving speed. Below are the relevant introductions for each gear of a car: 1. 1st gear: Used for normal starting or climbing very steep slopes, with speeds mostly around 10km/h. 2. 2nd gear: Used for low-speed driving or climbing steep slopes, with speeds mostly around 20km/h. 3. 3rd gear: Mostly used at speeds between 20 to 40 kilometers per hour, often used for city driving. 4. 4th gear: Generally used at speeds between 40-60km/h.
I've been driving manual transmission cars for over 20 years. As an experienced driver, I don't think 4th gear is suitable for highway driving. Most vehicles can reach 80-120 km/h in 4th gear, but it's best not to exceed 4,000 RPM. High engine RPM causes loud noise, significantly increases fuel consumption, and may damage internal components like pistons or valves. I remember once pushing 4th gear to 130 km/h when in a hurry - the engine roared terribly and later inspection revealed slight wear. I recommend learning to monitor the tachometer, shifting smoothly, and using higher gears (5th or 6th) for fuel-efficient cruising. For daily driving, try to stay within 80% of maximum speed to avoid long-term high-load operation that affects engine lifespan.
