Unibody is a type of vehicle body construction in which the frame and body are a single unit.
Rather than a separate, ladder-style frame, as is used in body-on-frame construction, the unibody vehicle’s integral floor pan — the metal that forms the vehicle’s underside — provides the main structural element to which the mechanical components attach. Also known as unit body, unitized or unitary construction, this design makes for a lighter vehicle overall and is the basis for virtually all passenger cars.
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