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Detailed Explanation of the Roewe RX8 Four-Wheel Drive System

2 Answers

VanJoshua

07/24/25 4:12am

Roewe RX8 is built on SAIC's new IS platform and equipped with a full-time four-wheel drive system. In AUTO mode, the power is distributed in a 40:60 ratio between the front and rear wheels. When the computer detects wheel slippage, it can switch the power distribution between 0% and 100%. Rear-Wheel Drive Mode: When manually switched to 2H mode, the vehicle operates in rear-wheel drive mode to help improve fuel economy. Function of the Central Differential: The central differential features a multi-plate clutch structure. In low-range four-wheel drive mode, the torque can be amplified by 2.48 times. The rear axle's mechanical limited-slip differential with friction plates automatically locks when it detects a speed difference exceeding 120 revolutions per minute between the two wheels, transmitting power to the wheel with traction to enhance off-road capability.

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DelColeman

08/10/25 11:48pm

As a car enthusiast who often tinkers with various 4WD vehicles, I find the Roewe RX8's four-wheel-drive system quite interesting. It uses an on-demand AWD system, meaning it primarily relies on front-wheel drive during normal driving for better fuel efficiency. However, when wheel slippage is detected—such as in rainy conditions or off-road situations—the system automatically switches to 4WD mode, distributing power to the rear wheels. The core mechanism relies on the vehicle's onboard computer and sensors to assess road conditions, supported by a multi-plate clutch to manage power distribution. While not as rugged as dedicated off-road vehicles, it’s practical among urban SUVs and relatively easy to maintain. I think this design suits those who commute daily but occasionally venture off-road—just avoid prolonged mud-plugging to prevent clutch overheating. Overall, the RX8's AWD enhances stability and safety, especially during braking in rain or snow.

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