Lightweight Design Jeep Grand Cherokee: Weight Savings Thanks to Magnesium and Aluminum

Editor: Nicole Kareta

The new Jeep Grand Cherokee celebrates its world premiere and presents itself in a new size in the full-size SUV segment. For the first time, the vehicle offers three rows of seats - and yet a lot of weight was saved during construction. Read here which parts were made from magnesium and aluminum.

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A special feature of the new Jeep Grand Cherokee L is its lightweight potential, made possible by the combination of magnesium, aluminum and high-strength steel.
A special feature of the new Jeep Grand Cherokee L is its lightweight potential, made possible by the combination of magnesium, aluminum and high-strength steel.
(Source: FCA)

Nearly 30 years ago, the Jeep Grand Cherokee began its legacy as the most awarded SUV in history. Today, following four ground-breaking generations of the vehicle, countless industry accolades and nearly 7 million global sales, Jeep continues to shatter expectations of the full-size SUV segment with the all-new 2021 Jeep Grand Cherokee L.

All-New Architecture with Lightweight Potential

The all-new 2021 Jeep Grand Cherokee L receives a multitude of improvements to optimize ride, handling and quiet sound, while also reducing weight and improving fuel economy. A new unibody design along with three available 4x4 systems (Quadra-Trac I, Quadra-Trac II and Quadra-Drive II), an available Quadra-Lift air suspension and standard Selec-Terrain traction management system improve on the Grand Cherokee’s 4x4 capability.

The use of lightweight, high-strength aluminum closures, including the bonnet and boot, help reduce weight and boost fuel economy. The Jeep engineering team reduced weight by mounting the axle directly to the engine, along with a solid-mounted aluminum front cradle, aluminum engine mounts and steering gear, a magnesium cross-car beam, aluminum shock towers and an all-new electronic master brake booster system. To help meet weight, impact and to improve durability, the Grand Cherokee L body structure employs the latest grades of Generation 3 steel. The next-generation steel gave engineering and design teams the ability to cold stamp complex parts from higher strength materials, which was not possible in the past, creating a more robust body structure.

Jeep engineers put substantial emphasis on designing a body structure that is both strong and lightweight, balanced yet functional. To achieve this, Grand Cherokee L is composed of more than 60 % advanced high-strength steel to aid in ductility, usability and energy absorption.

Jeep Grand Cherokee is widely known for its outstanding on-road driving dynamics and quietness, thanks in part to its front and rear independent suspension. For 2021, Grand Cherokee L employs a newly located front virtual ball joint to improve lateral control and a multi-link rear suspension that enables improvement in ride comfort and routine handling. An enhanced engine box with a shock-to-shock tower brace improves local lateral stiffness by 125 %. A new variable-rate air spring suspension continuously adjusts stiffness to loading conditions to further compliment the vehicle’s legendary off-road capability. Premium manners are enhanced with approximately 6,500 welds in the body alone.

Engine Made of Aluminum

Standard is the all-aluminium 3.6-litre Pentastar V6 engine, with 290hp and 348Nm of torque. Buyers who want more power can opt for the award-winning 5.7-litre V8, with 357hp and 528Nm torque delivered over a broad power band and has a class-leading towing capacity of up to 3,265 kg. The V8, with a foundation of a cast-iron block and aluminium cylinder heads, delivers performance and efficiency with VVT and Fuel Saver Technology (cylinder deactivation).

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