The mod adds a manual gearbox to the game. This way, you can choose your own gear while driving.
Control:
Upshift: NumPad 9
Downshift: NumPad 7
Clutch: NumPad 8
Engine: NumPad 5
You can configure the mod's controls in the Gears.ini file, which is located in the root folder of the game. You can find key codes in the file VK_Keycodes.txt To switch back to the automatic transmission, you need to press slash (The key with inclined sticks, which is basically above Enter)