Updated at: 27-07-2022 - By: Lucas

During the manufacturing process, a differential is fitted in the car to change the speed of various wheels under the same energy source.

The outside wheels of an automobile must rotate more quickly than the inside ones in order for a turn to be effective. The differential system serves this purpose.

So, is there a disparity in electric cars?

Yes, a differential is required for good steering in an electric automobile that uses a single mortar to turn all four wheels.

What Is Differential?

Different speeds can be achieved on the same axel using a simple gear arrangement. Drive wheels are the wheels that get direct engine power. During a turn, the difference comes into play.

Drive shaft rotations are also affected by the differential.

These parts require little upkeep because they are pre-sealed. Some maintenance is required, although manufacturers intend them to endure for the life of the vehicle.

Due to the additional drive wheels, four-wheel-drive vehicles might have numerous differentials.

Vibrations, binding, and clunking are all symptoms of a failed differential.

Do Electric Cars Have Differential Installed?

Differential systems are required in all electric vehicles that use a single mortar to turn the driving wheels. It is possible to find electric cars that have mortars for each wheel separately. During a turn, the speed of the individual mortars can be set to differ from one another.

It’s a 4WD vehicle if There are four separate mortars included with this set. When turning, the front wheel mortars will have their velocity varied. Pulse width modulation or frequency modulation can be used to achieve this.

An electronic differential is used to implement a differential for DC mortars. It’s called an electric differential in the case of AC mortars. Differential equations are used to reduce mechanical costs or to power wheel motors.

Types Of Differentials

Do Electric Cars Have Differentials-2

Open Differential

In addition to being the oldest, it is also the most frequent in contemporary automobiles. It’s easy to install and repair thanks to the device’s simple yet effective design. This differential can be found in the vast majority of high-mileage vehicles.

The pinion gear on the end of the driveshaft engages the ring gear. A different set of gears is used to transfer the generated power to the axel.

Although it suffers from one problem: When one tire encounters a loss of traction, extra power is transferred to the wheel with less grip. Due to the system’s architecture, it cannot be used in high-speed vehicles.


Only the integrated clutch mechanism makes it distinct from an open differential in many ways. The device locks the axel on both the left and right sides whenever one of the wheels loses traction. This technology can be found in high-performance automobiles and tow trucks.


Currently, this is the most recent advancement in the field of automotive differentials. This differential system gathers data from many elements of the car and uses it to determine which side of the vehicle should receive greater power.

With the help of unique sensors in the system, the data collection is focused on the steering wheel, road surface and throttle position. While cornering, the power distribution method ensures just the right amount of traction for each wheel.

How To Take Care Of The Differential?

Generally speaking, differential systems are expected to serve a vehicle’s lifetime. Even if this is the case, it doesn’t mean that the car doesn’t need to be serviced on a regular basis.

Lubrication oil is used in the system, which may need to be replaced from time to time. To keep the differential in good working order and to ensure its safety, the oil is treated more like engine oil.

Fluids can get polluted with time, necessitating their replacement. Other critical components will be worn out as a result of driving with the used fluid, and those repairs will be more expensive as a result.

The Signs Of Failing Differential System

  • Whirling sounds when reducing speed
  • Whining upon acceleration under both low and high speeds.
  • Rumbling when driving at speeds not exceeding 20mph. The sounds might stop when the car changes direction.
  • Interval clunking sounds when accelerating
  • Sudden vibrations when at high speeds.


There are a variety of power transmission techniques employed by electric car manufacturers. The bottom line is that. A differential system is required for every electric vehicle with a single power source in order to adjust the speeds of the various wheels during turns.