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How many gears does an automatic transmission have?

An automatic transmission typically has a range of gears, usually between 4 and 10, depending on the make and model of the vehicle. Some older automatic transmissions may have as few as three gears, while some newer ones can have up to 11 or even more. The number of gears is determined by the manufacturer and is designed to optimize the vehicle's performance and fuel efficiency under different driving conditions. The gears are shifted automatically by the transmission's control unit based on factors such as engine speed, vehicle speed, and throttle position.