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What are the speed requirements for shifting gears in a car?

3 Answers

McHayden

07/29/25 11:08pm

Start in first gear, shift to second gear when reaching 10 km/h, shift to third gear at 20 km/h, shift to fourth gear at 30 km/h, and shift to fifth gear at 40 km/h. Gear shifting should be completed within 100 meters, with the gear order increasing sequentially from low to high. Below is a detailed introduction about car gears: 1. Speed aspects: First gear corresponds to a speed of 0-5 km/h. Second gear corresponds to 5-20 km/h, third gear to 20-40 km/h, fourth gear to 40-60 km/h, and fifth gear to 60-100 km/h. 2. Gear shifting timing: Generally, the gear shifting timing for most cars is when the engine reaches 2000 rpm, and should not exceed 2500 rpm. For some high-displacement, high-power engines, shifting can be done around 3000 rpm.

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LeoDella

08/16/25 1:14am

I remember when I first started learning to drive, the instructor always emphasized matching gear shifts with the vehicle speed, otherwise the car would shake or even stall. The general rule is: start in first gear, shift to second gear when reaching about 20 km/h; accelerate to around 40 km/h for third gear; around 60 km/h for fourth gear; and use fifth gear or higher when exceeding 80 km/h. For downshifting, it's the opposite: drop to third gear when slowing below 50 km/h, second gear below 30 km/h, and first gear below 10 km/h. These speeds aren't rigid numbers—it depends on the car model. Smaller-displacement cars benefit from earlier shifts for fuel efficiency, while SUVs may shift more slowly for stability. Shifting incorrectly can lead to engine overheating or high fuel consumption. It's recommended for beginners to practice more on simulators or find empty roads to develop a feel for it. With time, it becomes natural—don't rush the shifts, safety is the top priority.

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OFelix

10/18/25 7:05am

After driving manual transmissions for half my life, I believe gear shifting isn't just about watching the speedometer – engine sound and vehicle feedback are more reliable indicators. When the engine roars too loudly, it's time to upshift; when RPMs drop low and the car shudders, downshift is needed. For speed reference, sedans typically upshift between 2000-3000 RPM (equivalent to 30-50 km/h) and downshift below 1500 RPM (around 20 km/h). Road conditions significantly affect this: use higher gears for fuel efficiency during highway cruising, downshift before climbing hills for power, and preemptively downshift before turns to prevent stalling. Each vehicle has unique characteristics – my old car benefits from earlier shifts to extend its life, while my friend's sports car thrives on later shifts for excitement. With enough experience, you'll develop an instinct for gear selection, making driving smoother.

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