Will the car stall when braking to 20 km/h in fifth gear?

[DeElena]

Whether the car stalls when decelerating to 20 km/h in fifth gear depends on whether the clutch is depressed. As long as the clutch is depressed, the car will not stall. If not, it will definitely stall. Here is the relevant information: Reason: Because the car will stall when the speed drops below 35 km/h in fifth gear. Each gear has a corresponding speed range. During driving, when braking occurs, each gear must maintain a speed above its minimum threshold; otherwise, the car will stall. Purpose: Depressing the clutch prevents stalling, while braking ensures safety. Speed ranges for each gear: First gear: 0 km/h - 15 km/h. Second gear: 10 km/h - 25 km/h. Third gear: 20 km/h - 45 km/h. Fourth gear: 40 km/h - 60 km/h. Fifth gear: Above 60 km/h.

[OCameron]

When I first learned to drive, I did this: I braked directly in fifth gear to slow down, and when the speed dropped to about 20 kilometers per hour, the car suddenly stalled, which scared me. The reason was that the engine speed was too low, and the deceleration was too fast in a high gear. If I didn't downshift in time, the RPM would drop below idle, and the fuel supply would be cut off, causing the engine to stall. Later, I figured it out: every time I brake, I need to pay attention to the tachometer and speed. For example, when the speed drops to 40 kilometers per hour, I should shift to a lower gear, such as fourth or third, to keep the engine above 1000 RPM for stability. As a beginner, this lesson made me practice coordinating the clutch and brake more to avoid embarrassment at traffic lights and also save some fuel.

[SilasDella]

I've been driving for years and seen this plenty. Manual transmissions will stall eight times out of ten if you brake from fifth gear down to 20 km/h without depressing the clutch or downshifting - the engine just can't handle the load. But I've developed the habit of shifting by ear: when braking and speed drops to 30-40 km/h, I downshift to third, keeping RPM steady around 1,000 for smooth deceleration without jerking. New drivers often make this mistake mainly due to nervousness forgetting the sequence - it just takes practice. Stalling itself isn't catastrophic, the car just shudders to a stop, but avoid letting it happen in traffic as the steering wheel becomes heavy and unresponsive, which is dangerous. My advice: make downshifting an instinctive part of slowing down, don't take shortcuts.

[IsaacFitz]

For a car, the engine and transmission must work well together. Fifth gear is a high-speed gear with a high gear ratio, suitable for fast driving. However, if you suddenly brake and slow down to 20 km/h, the low speed combined with the high gear forces the engine to operate at a low RPM, possibly dropping below 700 RPM, which is lower than the minimum idle speed (usually around 800 RPM). This unstable combustion can cause the engine to stall. To avoid this, you should engage the clutch or shift to a lower gear (such as second or third gear) during deceleration, keeping the RPM above 1000 for a smooth transition.

[CarlosLee]

If you brake directly from fifth gear to 20 km/h without taking action, the engine is likely to stall. After stalling, the vehicle loses power, and steering and braking assistance weaken, which can easily lead to accidents such as rear-end collisions. As a long-distance driver, I emphasize safety: when decelerating, check the speedometer in advance and downshift when the speed drops by half; at 20 km/h, second or third gear should be used. New drivers especially need to practice this maneuver and develop the habit of pressing the clutch to ensure stable driving. Although the engine can be restarted after stalling, the risk should not be taken, especially on slopes or highways.

[LaJake]

When driving a manual transmission, this situation is common. Braking from high speed, if you don't downshift from fifth gear and slow down directly to 20 km/h, the car often stalls because the high gear drags down the engine. However, some modern vehicles have anti-stall features to mitigate this, but older cars don't. From my experience: when speed drops to 30 km/h, it's time to shift to a lower gear; at 20 km/h, third gear is the safest, maintaining above 900 RPM ensures a smooth stop. Stalling once is a minor issue, but failing to correct it becomes troublesome and affects driving pleasure.