Differential in Electric Cars
An electric car still needs a way to let its drive wheels rotate at different speeds when cornering, and that is exactly what a differential for electric car applications does. The hardware can look very different from a conventional setup, but the underlying task remains the same. In many EVs the differential is integrated into a compact reduction-gear drive unit rather than a traditional multi-speed transmission.
Essential answer
A differential in an electric car performs the same core function as one in a gasoline or diesel vehicle: it allows the left and right drive wheels to travel different distances through a turn while still receiving torque. Without this action, the inside tire would scrub or hop because it follows a shorter arc than the outside tire. The electric powertrain changes the packaging and often the gearing around the differential, but the mechanical need remains.
In a typical EV, the differential is commonly housed with a single-speed reduction gear between the electric motor and the axle shafts. This arrangement replaces the multi-ratio transmission found in many combustion vehicles. Some performance or all-wheel-drive models use two or three motors, and they may handle left-right speed differences through separate motor control rather than one central differential. A vehicle-specific design can therefore place the differential-like function in software, hardware, or a combination of both.