Should the accelerator be released when shifting gears?

[DiMariana]

When shifting gears in a car, the accelerator needs to be released. Detailed instructions on releasing the accelerator when shifting gears are as follows: 1. When upshifting, release the accelerator, depress the clutch, shift up, release the clutch, and press the accelerator. When downshifting, release the accelerator, depress the clutch, lightly apply the brakes, shift down, and release the clutch. Apply throttle as needed. Generally, the accelerator should be released when shifting gears. Operating a manual transmission car without releasing the accelerator during gear shifts is challenging. 2. When downshifting, release the accelerator and lightly apply the brakes to control the speed within the range suitable for the target gear, depress the clutch, engage the corresponding gear, and then slowly release the clutch. Downshifting is a deceleration process, but it doesn't mean completely ignoring the accelerator pedal. After completing the shift and fully releasing the clutch pedal, the accelerator pedal should be pressed immediately to achieve smooth power transition. 3. It is possible to shift gears while pressing the accelerator pedal, but this will lead to excessive wear of the clutch plates.

[OSabrina]

Driving a manual transmission car indeed requires some skills. After driving for over a decade, I've found that the coordination between the throttle and clutch is particularly crucial. About one second before shifting gears, you need to lift your right foot off the accelerator pedal, allowing the engine speed to naturally drop. Simultaneously, decisively press the clutch pedal all the way down with your left foot, then complete the gear shift. It's like dancing to a rhythm - the three movements of releasing the throttle, pressing the clutch, and shifting gears should flow smoothly. If you don't release the throttle in time, the clutch plates will grind harshly, and prolonged operation like this will lead to clutch slippage, which isn't cheap to repair. I've seen cases where people kept dragging without releasing the throttle, resulting in complete clutch failure after just 30,000 kilometers. Automatic transmissions are much more worry-free as the computer automatically controls the throttle, but even when using manual mode, it's better to ease off the throttle slightly before shifting.

[StJoel]

Last time when accompanying my novice friend for driving practice, I specifically taught her the trick of shifting gears. With a manual transmission, you must release the accelerator pedal the moment you shift gears, otherwise the loud clashing sound of the gears is particularly frightening. The principle is actually simple: when pressing the accelerator, the engine is spinning vigorously, and suddenly shifting gears is like forcibly engaging gears with different rotational speeds. Shifting without releasing the accelerator not only damages the transmission gears but also causes severe jerking of the car body. I’m accustomed to easing off the accelerator about 0.5 seconds before shifting, waiting for the RPM to drop to around 2000 before engaging the gear, which makes the shift exceptionally smooth. The veteran instructor at the driving range called this 'double-clutching.' Although modern cars don’t require pressing the clutch twice like older models, the essential action of easing off the accelerator must never be skipped.

[LaColeman]

After eight years of delivering goods in my manual transmission pickup truck, I've summarized the smoothest shifting technique: when the tachometer needle approaches the shift range, gently lift the right ankle to cut off power while simultaneously pressing the clutch pedal all the way with the left foot. If you forget to ease off the throttle while shifting with a loaded cargo, the entire load in the cargo box will clatter and shake. Once, in a hurry, I forced it into third gear without fully releasing the throttle, and the transmission made a loud clunking noise before giving up. During repairs, the mechanic pointed at the worn synchronizer ring and said: 'Shifting without fully releasing the throttle is like making the gears fight each other.' Although automatic transmissions don't require clutch pedals, the transmission delays shifting when the throttle is deeply pressed, so you still need to ease off the throttle slightly for quick upshifts.

[EmersynFitz]

When I first started learning to drive, the instructor always yelled at me about my gear shifting technique. The key is to build muscle memory: use your right heel as the pivot point, and as the ball of your right foot lifts off the accelerator pedal, your left foot should immediately depress the clutch. These two movements should be coordinated like a seesaw. The moment the engine suddenly cuts fuel, the RPM drop makes gear shifts smoother. I've done comparative tests – shifting while keeping the throttle open results in five times more shock than releasing the throttle. Modern cars all have synchronizers, but aggressive shifting will still shorten transmission life over time. Pay special attention when starting from a red light – be decisive about releasing the throttle when shifting from first to second gear.

[Ora]

As a mechanical enthusiast, I've studied how transmissions work. During gear shifts, the gear set needs to briefly disengage from power before re-engaging. Not lifting off the throttle is equivalent to forcing a rotating drive gear to collide with a stationary driven gear, causing the driveshaft to twist. Data shows this impact force can reach up to three times the engine's torque. I've developed the habit of shifting around 2500 RPM where the RPM difference is smallest - lifting off the throttle and waiting half a second before pushing the gear lever makes for the smoothest shift. The brilliance of automatic transmissions lies in the computer briefly cutting fuel for you, but when driving sequential transmission race cars, technicians repeatedly emphasize the necessity of lifting off the throttle during shifts - proving this is fundamental mechanical principle.