What is the meaning of 4WD and 4X2 with respect to automobile industry and vehicle in general

4WD (Four Wheel Drive)
Four Wheel Drive is a system which transfers engine power to four wheels independently and is mostly found on SUVs (sport utility vehicles) and all-terrain vehicles. By using differentials it can transfer almost any amount of power percentage to any of the four driving wheels.

4X2 (Two Wheel Drive)
This expression is used to describe a vehicle with only two wheel drive. The first figure is the total number of wheels, and the second is the number of driving wheels. In some countries it's essentially a different name for rear-wheel drive vehicles (RWD), unlike 2X4, which can be used for describing a front-wheel drive vehicle (FWD).

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