Why Downshift When Overtaking?

[Paula]

Downshifting during overtaking is done to obtain greater torque and improve acceleration. Here is relevant information: 1. The moment you upshift, the engine speed immediately decreases, but the vehicle speed remains unchanged. At the same time, since the transmission ratio becomes smaller, the torque output from the engine to the wheels also decreases. After completing the upshift, you accelerate by pressing the throttle, but due to the reduced torque output, the vehicle accelerates more slowly. 2. The moment you downshift, the engine speed immediately increases, but the vehicle speed remains unchanged. Simultaneously, as the transmission ratio becomes larger, the torque output from the engine to the wheels also increases. After completing the downshift, you typically reduce speed by easing off the throttle (so-called deceleration downshifting).