Should the throttle be released when upshifting during acceleration?

[LaJude]

Here are two scenarios regarding whether to release the throttle when upshifting during acceleration: Manual transmission models: For manual transmission models, the throttle should be released when upshifting. Automatic transmission models: For automatic transmission models, there is no need to release the throttle. Below are extended details on the related content: Automatic: For automatic transmission models when upshifting, one method is the vehicle computer automatically upshifts, which can be completed without releasing the throttle. Manual: To upshift in manual mode, shift the gear lever to manual mode, push up to upshift, and pull down to downshift. Automatic transmission gear positions: P is the parking gear and also the starting gear; R is the reverse gear; N is the neutral gear; D is the drive gear also known as the forward gear; S is the sport mode; L is the low gear.

[Priscilla]

When I first learned manual transmission, my mentor repeatedly emphasized: You must release the throttle when upshifting! If you directly depress the clutch and shift gears, the engine RPM will suddenly spike, causing the car to lurch forward violently, which is quite frightening. The correct operation is actually very simple—accelerate to around 2000 RPM, completely lift your right foot off the throttle pedal, immediately depress the clutch with your left foot, smoothly push the gear lever into a higher gear with your right hand, and finally release the clutch evenly while lightly tapping the throttle. The key is synchronizing the throttle release and clutch depression. Otherwise, aside from the grating noise from the transmission gears, you might even wear out the clutch disc. Now, especially during cold winter starts, I pay extra attention to this, since repairing a transmission once costs enough for half a year’s fuel.