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The second generation Jeep Grand Cherokee was built with a unibody chassis instead of the traditional body-on-frame design. This made it the first mid-sized SUV to adopt this approach, which paved the way for the construction of most contemporary SUVs. A unibody combines the frame and body into a single structural unit, whereas a traditional frame is built separately from the body and then attached. The traditional method results in a heavier and less efficient vehicle. The unibody construction of the Jeep Grand Cherokee results in a lighter, more spacious, safer, and more economical vehicle. The 2020 Jeep Grand Cherokee models have a curb weight ranging from 4,513 to 5,356 pounds and achieve an average fuel economy of 19 mpg in the city and up to 26 mpg on the highway.
The Jeep Cherokee is built using a unibody frame.