What is a RWD drivetrain?

Rear-wheel drive (RWD) is an automotive power transmission system characterized by the engine's power being transferred to the rear wheels via a driveshaft, while the front wheels are solely responsible for steering. This division of labor enables a near 50:50 front-to-rear weight distribution, significantly enhancing the vehicle's dynamic balance. During acceleration, the vehicle's centre of gravity naturally shifts rearward, increasing rear-wheel traction, which allows luxury sedans like the BMW 3 Series to achieve more precise steering response and cornering stability. Its mechanical structure is simple, with the power transmission path following the sequence: engine → driveshaft → rear differential → rear wheels, making it easier to maintain and reducing repair costs. Overall, RWD, with its superior handling dynamics and balance, is a common configuration in high-performance and luxury vehicles, though the choice should be made based on actual driving conditions.