body-on-frame design

unibody design vs. body-on-frame design

Unibody and body-on-frame describe two different platform configurations of car and truck design. Evolving from horse-drawn buggies, the earliest cars were body-on-frame. Yet in the mid-20th century, this began to change.

Today, almost all passenger vehicles have switched to unibody designs. Despite the overwhelming majority of passenger vehicles being unibody, there are instances where body-on-frame vehicles are preferred.