AUBURN HILLS, MI — The Chrysler Group Multi-Displacement System (MDS) is a fuel-saving cylinder deactivation technology that gives customers the power and capability of the HEMI V-8 with an improvement in fuel economy of up to 20 percent. Chrysler Group is now the first to offer MDS in a pickup truck — the 2006 Dodge Ram 1500. The company was the first to offer cylinder deactivation in an SUV with the introduction of MDS in the 2005 HEMI-powered Jeep Grand Cherokee. It was also the first to offer modern, large-volume vehicles in North America with cylinder deactivation — the HEMI-powered 2005 Chrysler 300C and Dodge Magnum R/T went on sale in the spring of 2004 with the Chrysler Group MDS. Some of the significant technologies enabling the Chrysler Group MDS are the speed of electronic controls, the sophistication of the algorithms controlling the systems, and the use of Electronic Throttle Control. The HEMI can seamlessly transition from eight cylinders to four in 40 milliseconds (0.040 seconds). The Chrysler Group MDS is standard equipment on the Chrysler 300C and Dodge Magnum R/T, Charger R/T and standard on the HEMI-powered Dodge Durango, Ram 1500, and Jeep Grand Cherokee and Commander.

Originally posted on Fleet Financials