Vehicles with power delivered to only two wheels, typically the rear wheels in light trucks, represent a common drivetrain configuration. This setup offers advantages in terms of simplicity, fuel efficiency, and lower manufacturing costs. For instance, a pickup used primarily on paved roads for hauling lighter loads benefits from this simpler mechanism.
Historically, this drivetrain layout has been the standard for many light-duty trucks. The reduced complexity translates to enhanced reliability and decreased maintenance requirements. While four-wheel drive systems offer superior traction in off-road or challenging weather conditions, a two-wheel drive configuration remains sufficient and economical for many applications. This contributes to its continued popularity, particularly in regions with milder climates and predominantly paved roads.