There is one big role that the transmission plays in your car – to send power from the engine to the wheels. Also known as the gearbox, the transmission contains gears that basically convert the speed and torque for the wheels to use.
When driving off, you start in the first gear, which high gear ratio allows for the highest conversion of input torque (from engine) to output torque, with the car moving at its lowest speed. As you shift the gear, the gear ratio and converted torque is reduced while the car’s speed increases. During acceleration from a stop, you need the max torque to get the car moving. But as the car moves, torque is not much required and the vehicle is picking up speed, so you need to change gears.
However, there could be times that you car isn't shifting properly, which indicates problems with the transmission. Before something really goes bad with your car’s gearbox, stay alert for a number of signs that could indicate possible issues. Here are five of them