In a rear-wheel drive car, the engine sends all power to the rear wheels and the front wheels only have to steer, which can create a more engaging driving experience as it is pushed from behind rather than a drag effect from the front. In a four-wheel drive vehicle, the engine powers all of the wheels at once. This increases the amount of grip the car has on the road and 4WD will be better for rough terrain and adverse weather conditions, such as snow.