In some of the most recent cars available, you can change gears simply by pressing a button, turning a knob or toggling a small joystick. Yet at the same time, plenty of different automobiles still require drivers to use one foot for the clutch pedal and another for the gas, all when using one hand to manipulate the gear-change lever through a distinct design of positions. And several other current vehicles don’t possess any traditional gears at all in their transmissions.
But regardless of whether a vehicle has a fancy automatic, an old-college manual or a modern-day constantly variable transmitting (CVT), each unit must do the same job: help transmit the engine’s result to the generating wheels. It’s a complex task that we’ll make an effort to make a little simpler today, starting with the basics about why a transmitting is needed in the first place.
Let’s actually start with the normal internal combustion engine. As the fuel-air mixture ignites in the cylinders, the pistons begin upgrading and down, and that motion is utilized to spin the car’s crankshaft. When the driver presses on the gas pedal, there’s more fuel to burn in the cylinders and the complete process moves quicker and faster.
What the transmission does is change the ratio between how fast the Variable Speed Drive Motor engine is spinning and how fast the driving wheels are moving. A lower gear means optimum overall performance with the wheels moving slower 
compared to the engine, while with an increased gear, optimum performance includes the wheels moving quicker.
With a manual transmission, gear shifting is handled by the driver via a gear selector. Many of today’s cars have got five or six ahead gears, but you’ll discover older models with anywhere from three to six ahead gears offered.
A clutch is utilized to transmit torque from a car’s engine to its manual transmitting. The various gears in a manual tranny allow the car to visit at different speeds. Larger gears offer plenty of torque but lower speeds, while smaller gears deliver less torque and allow the car travel more quickly.
