The Electronic Gear Shift System, or Mercedes EGS for short, is a sort of transmission control system found in several Mercedes-Benz automobiles. The driver's input is detected by this system using electronic sensors, which also choose the best gear for the road conditions. The EGS technology controls the engagement and disengagement of the clutches and bands in tandem with the transmission, enabling effortless and effective shifting.

Mercedes-Benz automobiles' EGS systems are renowned for their dependability and toughness, and with regular maintenance, they can last for many years without experiencing any issues. Certain Mercedes-Benz automobiles with the M112 V6 engine may have a specific EGS designation, such as EGS 52, which relates to the 5-speed automated transmission.