Automotive gears are important components in modern vehicles that play a crucial role in transmitting power from the engine to the wheels, controlling vehicle speed and direction, and managing torque distribution. Gears are mechanical gadgets with rotating elements that transmit movement and energy between two or more shafts. Various methods in an automobile, together with the transmission, steering, engine, braking, and differential, use gears. This article provides an outline of several types automotive gears of automotive gears, their applications, design issues, upkeep and troubleshooting, and future trends. The automotive industry makes use of various types of gears, including spur gears, helical gears, bevel gears, worm gears, and planetary gears. Each sort serves particular capabilities corresponding to transmitting energy, altering speed or path, and torque multiplication in numerous automotive systems corresponding to transmissions, differential assemblies, and powertrains.