Six-plus decades of Jeep history gave the designers of the all-new 2006 Jeep Commander an unrivaled heritage from which to draw. Key sources of inspiration were the Willys Station Wagons (1946 to 1962), the Jeep Wagoneer (1963 to 1991) and, most of all, the Jeep Cherokee (1984 to 2001).
For its inaugural year, three engines are available for the 2006 Jeep Commander. It is the only SUV in its class to offer two V-8 engines. The 3.7-liter engine provides the 2006 Jeep Commander with a powerful standard engine that is efficient, durable and smooth. It produces 210 horsepower (157 kW) at 5,200 rpm and 235 lb.-ft. (319 N•m) at 4,000 rpm. Improvements have smoothed the engine at idle. To ensure quiet operation, the engine has a thick-wall composite manifold, and also benefits from structural improvements to the air box and resonator.
The 4.7-liter engine produces 235 horsepower (172 kW) at 4,500 rpm and 305 lb.-ft. (393 N•m) of torque at 3,600 rpm. Dual knock sensors were added to provide improved engine calibration for both fuel economy and power output. The engine has improved noise, vibration and harshness (NVH) characteristics, realized through the use of composite valve covers, structural improvements to the air box and resonator and improved dampening of the heat shields.
The 5.7-liter HEMI with the Multi-Displacement System (MDS) gives Commander best-in-class performance. MDS imperceptibly deactivates half the cylinders of the 5.7-liter HEMI during cruising and light acceleration to increase fuel economy by up to 20 percent, depending on driving conditions. A sophisticated Electronic Throttle Control (ETC) system tailors throttle response to pedal movement based on operating conditions, and maintains a more consistent vehicle speed on rolling grades when cruise control is active than with the former mechanical throttle control system. The HEMI produces 330 horsepower (246 kW) @ 5,000 rpm and 375 lb.-ft. (508 N•m) @ 4,000 rpm.
Source: Jeep press