Bọn VN thì tưởng vậy, còn bọn nước ngoài thì nói như vầy :
Body on Frame :
For car makers, body-on-frame vehicles are easier to redesign and modify. The same frame can be used over and over with changes made only to the body attached to it. This leads to lower design and manufacturing costs. Additionally, owners may find body-on-frame vehicles easier and cheaper to repair after accidents if the entire frame isn’t badly damaged.
At the same time, there are some distinct disadvantages to this frame style. Body-on-frame vehicles are often heavier and consume more fuel. Also, they score lower on crash test scores because they do not have distinct crumple zones. Furthermore, vehicle rollover is a particular problem since these vehicles have higher ground clearance and a higher center of gravity. This is especially true when it comes to cornering at high speeds.
Unibody
Their lower center of gravity and more rigid frame also make them much less prone to vehicle rollover.
Unibody designs also score higher on crash safety test ratings. Not only are they more rigid, since they are comprised of a single unit, they also typically integrate a “crush zone” into their design. This allows for the vehicle frame to absorb the impact of a collision and even have designated space within which to crumple while simultaneously protecting the passenger cabin.
Nếu không biết tiếng Anh thì có thể dịch đơn giản là Body on frame có chi phí sản xuất rẻ hơn nhưng kém an toàn hơn, dễ lật hơn so với khung gầm Unibody .
Đó là lý do vì sao hầu hết SUV hạng sang đều không xài Body on frame mà sử dụng khung gầm Unibody như Mer GLS, BMW X5, Audi Q7, Lamboghini Urus, Porsche Cayenne, Range Rover, Bentley Bentayga, Roll Royce Cullinan. . . . .
