We get into the car and press “C” - a gear indicator and an electronic speedometer appear.
You can turn on the gear by clicking on the left mouse button, and lower the gear by pressing the "Shift" key.
While idling in low gear, press the "Shift" key to engage reverse gear.
It's very simple.
Each car has a different shift interval for the maximum gear. The mod is available for four-wheeled vehicles with a maximum gear of 3 to 5 and an ID of 400 to 587.