Why is there a hump in the middle of the rear seats in sedans?

1 Answers
DonovanDella
07/30/25 2:38am
The hump in the middle of the rear seats is designed for the flatness of the chassis. Here are the reasons for the hump in the middle of the rear seats: 1. The hump is due to the chassis underneath accommodating components like the exhaust pipe, brake lines, or drive shaft. 2. It ensures the flatness of the chassis. 3. The raised section between the front passenger and driver seats from front to back is a structural design. 4. The purpose is to enhance the longitudinal rigidity of the cabin. The hump is higher in four-wheel-drive (4WD) models for the following reasons: 1. Based on the same chassis assembly, both 4WD and two-wheel-drive (2WD) models are offered for consumers. 2. To save manufacturing costs, space is reserved for 2WD (front-wheel-drive) models (i.e., the hump accommodates the drive shaft for the 4WD system). 3. Some models have 4WD versions abroad but are not introduced in China, so some front-wheel-drive models may still have a higher rear hump.
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