Where is the frame of a sedan located?

[DelTucker]

The frame of a sedan is located beneath the passenger compartment, consisting of two channel steels that run from the front to the rear of the vehicle, marking the position of the frame. The vehicle frame is supported on the wheels via the suspension system, front axle, and rear axle. The frame, also known as the chassis, serves as the foundation of the automobile, typically composed of two longitudinal beams and several cross beams. The vehicle frame is part of the automobile's undercarriage structure, but most modern cars no longer employ a frame-based undercarriage design; only trucks and large buses utilize this. The vehicle frame is the primary load-bearing component of a truck, bearing almost the entire weight of the cargo, and its quality affects the vehicle's service life and driving safety. The manufacturing of vehicle frames generally employs stamping forming processes, with bending being the primary deformation method, hence the frame plates require high formability.