What is the speed range for first, second, and third gears?
2 Answers
First gear is the starting speed, typically ranging from 0-5 km/h; second gear corresponds to a speed of 5-20 km/h; third gear corresponds to a speed of 20-40 km/h; fourth gear corresponds to a speed of 40-60 km/h; fifth gear corresponds to a speed of 60-100 km/h. Generally, the optimal time to shift gears is when the engine speed reaches 2000 rpm, preferably not exceeding 2500 rpm. Below are guidelines to determine the correct shifting timing: 1. Upshifting timing: When the engine has ample power, it emits a deep humming sound. After upshifting, if there is no power deficiency or shaking of the transmission components, and the vehicle accelerates smoothly and naturally, it indicates the upshifting timing is accurate. 2. Downshifting timing: When the vehicle's speed and engine speed continue to drop, and you feel the car losing power with the engine compartment starting to shake, it's time to downshift one gear. Downshifting too early will result in noticeable jerking, wasting engine power, increasing fuel consumption, and negatively impacting the lifespan of the engine and transmission. Downshifting too late will leave the vehicle underpowered even after downshifting, and further downshifting will still feel jerky. Misjudging the shifting timing leads to such irreversible consequences, inevitably affecting the driving experience.
Speaking of the speed ranges for first, second, and third gears, after driving for so many years, I've realized there's no fixed standard—it all depends on the car and personal driving habits. When I drive a sedan, first gear is usually for starting off, with speeds roughly between 0 to 15 km/h, ideal for congested city roads or uphill starts. Second gear is for acceleration, typically ranging from 15 to 40 km/h, most commonly used on flat suburban roads. Third gear is for moderate speeds, like 30 to 60 km/h, perfect for smooth acceleration before entering a curve on highways. But if you're driving an SUV or pickup, first gear can handle speeds above 20 km/h due to the engine's higher torque. The key is to watch the tachometer to avoid lugging the engine (high gear at low speed) or over-revving (low gear at high speed), which can damage the engine and waste fuel. New drivers often ask me how to judge gear shifts—I recommend trying different car models to get a feel for it; when the engine noise gets louder, it's time to shift.
