Selec-Terrain and Part-Time 4x4
One of the most recognizable features across the Jeep lineup is the Selec-Terrain traction management system. Found on models like the Wagoneer S and Compass, this system lets you choose from multiple driving modes - including Auto, Sand, Mud, Rock, and Snow - to optimize performance for the conditions in front of you. It works alongside the vehicle's available 4x4 system to distribute power where it's needed most.Part-time 4x4, on the other hand, is designed for drivers who want full control. You engage it manually when conditions call for extra traction, and return to two-wheel drive on regular pavement. This setup is common on the Wrangler and Gladiator, and it's especially effective for those who split their time between everyday driving and weekend adventures.
Rock-Trac and Command-Trac 4x4
The Jeep Wrangler is available with two distinct 4x4 systems depending on the trim you choose. The Command-Trac system is a part-time setup with a 2.72:1 low-range gear ratio, making it a solid choice for moderate off-road use. Step up to the Rubicon trim, and you get Rock-Trac - a heavy-duty part-time system with a 4:1 low-range gear ratio. That lower ratio gives you dramatically more crawling power on the toughest terrain.The Gladiator pickup follows a similar structure, pairing these same capable systems with truck-based utility.
Quadra-Trac and Quadra-Drive Systems
For full-size SUV shoppers, the Grand Wagoneer and Grand Cherokee offer a range of more sophisticated all-wheel-drive and 4x4 options. Quadra-Trac I is a single-speed full-time 4x4 system that requires no driver input - it simply works in the background. Quadra-Trac II adds a two-speed transfer case with low range, while Quadra-Drive II goes even further with an electronic limited-slip rear differential that actively manages torque distribution between wheels.These systems are built for drivers who want confidence on slippery or uneven surfaces without the complexity of manual engagement. They represent the upper tier of Jeep 4x4 system engineering, and they make the Grand Cherokee and Grand Wagoneer capable in a wide range of conditions.