Since it's got Jeep's first third-row seat, it would be safe to assume that the 2006 Jeep Commander excels in the area of interior versatility and comfort. But, that would be wrong. What will make the 2006 Jeep Commander a success is what lies under its hood and under the skin. Three engines are available, ranging from the base 3.7-liter V6 to a choice of powerful V8s, one of which is the enviable 5.7-liter Hemi. And like all Jeeps, the four-wheel-drive systems can't be beat. As with the Grand Cherokee, the 2006 Jeep Commander can be outfitted with Quadra-Trac I, Quadra-Trac II, or Quadra-Drive II.