What is a Transmission?

Your car’s gearbox is an integral component. Located right next to the motor, it transfers the torque produced by the engine’s combustion process into forward motion for the wheels.

Transmission efficiency is the driver’s responsibility. By shifting gears, you may keep the engine’s RPMs (Revolutions Per Minute) low, reducing wear and tear and fuel consumption. The transmission’s primary function is to maximize the engine’s efficiency by lowering its fuel consumption and optimizing its output of mechanical power, which is subsequently used to propel the vehicle forward.

To put it another way, the gearbox is responsible for distributing the power generated by the engine to the wheels through the drive shaft and axle. Learn more about Dorman 200 transmission

Manual gear vs automatic transmission:

Manual transmission vehicles have five or six forward gears and one backward gear that the driver shifts between, whereas automatic transmission vehicles shift gears for the operator automatically.

One obvious advantage of driving a vehicle with automatic transmission is that you never have to worry about shifting gears. You should feel at ease. Having an automatic gearbox is fantastic because it frees your mind from focusing on gear changes as you wait in traffic.

However, the sensation of command and grip while shifting gears is something you can only experience in a vehicle with a manual gearbox.

What happens inside an automatic transmission?

The “typical” automatic transmission uses hydraulics and is regulated electrically in the gearbox. Automatic transmissions provide high fuel efficiency because their gearboxes are programmed to shift into a new gear at the appropriate time in response to the vehicle’s engine speed.

Semi-automatic gearbox:

A semi-automatic gearbox is a transmission in which the clutch is still there (although it is not the clutch) and the gear changes are managed automatically by a computer.

The semi-automatic transmission operates differently in various vehicles. Some vehicles include an automatic transmission that allows the driver to sit back and relax while the engine and electronics handle shifting gears.

Some vehicles need the driver to “tell” the engine when to shift gears.

Finally, some vehicles allow you to decide for yourself whether you wish to use the gear stick or not while shifting gears.


There is a clutch in a DSG gearbox, making it a hybrid of sorts between manual and automated transmissions. Not all fully automatic transmissions are like this one. A dual-clutch eliminates the need for a clutch pedal while retaining the clutch’s functionality, allowing for rapid gear changes.

This transmission is typical of the bigger German vehicle fleet and can be found mostly in  Skoda, Audi, and Volkswagen models.

Sequential gearbox:

Some vehicles also have what is called a “sequential gearbox,” which requires the driver to physically pass each gear as they shift up or down. You use a set of cogwheels to sequentially change gears, and unlike a manual transmission, you can only choose a gear that comes immediately before or after the one you’re in.