Is it normal for a car to display odo?

[ElijahMarie]

It is normal for a car to display odo, which is the total mileage display function of the car. When this function is enabled, a yellow odo light will appear on the vehicle's dashboard. The car odo odometer is a common digital instrument. It works by engaging the transmission gear of the vehicle's counter drum wheel with the worm gear on the speedometer drive shaft, causing the vehicle's counter drum wheel to rotate. Its characteristic is that when the upper-level drum wheel completes a full rotation, the lower-level drum wheel rotates one-tenth of a turn. The function of the car odo is to force a downshift to increase engine speed and enhance acceleration capability, which is useful for short-term overtaking on highways. However, using it in urban areas will increase fuel consumption. After activating the odo function, the highest gear is limited to the 3rd gear.