This is the oldest and most common type of chassis design. It consists of two parallel longitudinal beams (usually made of steel) connected by cross-members. The engine, transmission, and suspension components are attached to the frame. Ladder frame chassis are strong and durable, but they are also relatively heavy and can result in a rougher ride.
Monocoque chassis:
A monocoque chassis (also known as a unibody or unitary construction) is a more modern design that uses the car's outer skin to provide structural support. The engine, transmission, and suspension components are attached to the body structure, rather than to a separate frame. Monocoque chassis are lighter and more rigid than ladder frame chassis, and they can provide a smoother ride.
Backbone chassis:
A backbone chassis consists of a central tube (usually made of steel or aluminum) that runs from the front to the rear of the car. The engine, transmission, and suspension components are attached to the backbone tube. Backbone chassis are strong and lightweight, but they are also more complex and expensive to manufacture than ladder frame or monocoque chassis.
Space frame chassis:
A space frame chassis is made up of a network of tubes (usually made of steel or aluminum) that are welded together to create a rigid structure. The engine, transmission, and suspension components are attached to the space frame. Space frame chassis are lightweight and very strong, but they are also complex and expensive to manufacture.
Platform chassis:
A platform chassis is a variation of the ladder frame chassis that uses a flat platform (usually made of steel or aluminum) to support the engine, transmission, and suspension components. The body of the car is then attached to the platform. Platform chassis are strong and versatile, and they can be used for a variety of different types of vehicles.