Where are the rear doors mounted on four-door cars?

The rear doors on four-door cars are typically mounted on the center pillars. This design allows for the proper opening and closing of the rear doors while ensuring structural integrity and safety for passengers. The center pillar serves as a strong support structure that divides the front and rear sections of the car, which is crucial for maintaining the overall strength of the vehicle's body.

Choosing the center pillar for door mounting means that the door can swing open easily and allows for adequate cabin access, while also contributing to the car's crash safety features. In contrast, the other options, such as hinge pillars and door pillars, do not accurately describe the structural location of rear doors in relation to the vehicle's architecture. Quarter panels, while part of the vehicle's outer structure, are not functional supports for door mounting. Hence, recognizing the role of the center pillar in this context helps better understand vehicle design and safety features.