Multi-Displacement System to Save Customers 60 Million Gallons of Fuel Annually
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.
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.
More Fuel

Study: How 2026's Gas Price Hikes Affect Different Vehicle Types
New data from iSeeCars reveals how rising fuel costs have affected different vehicle segments as gasoline prices climbed nearly 46% over the past four months.
Read More →Are You Tracking Your Fleet's True Total Cost of Ownership?
Bobit Business Media surveyed 190 fleet professionals and found that while most fleets are tracking costs, fragmented systems and data gaps are keeping true TCO visibility out of reach. With rising pressure to control spend in an increasingly volatile environment, the gap between what fleets think they know and what the data actually shows is wider than you might expect. See how your peers are managing costs today and where the industry still has room to improve.
Read More →
May Fuel Update: All Regions Experience Declines
Gas prices are finally easing in much of the country, but experts warn global tensions could quickly reverse the trend as the national average remains well above last month’s levels.
Read More →
April Fuel Update: Prices Climb Above $4 as Spring Surge Accelerates
National average jumps to $4.04 per gallon, up sharply from last year, with West Coast prices topping $5 and further increases expected amid rising oil tensions.
Read More →
Tips from Fleet Managers on Saving Fuel Costs
Fleet leaders share practical strategies to reduce fuel spend through smarter policy, routing, and driver guidance.
Read More →
March Fuel Update: Prices Settle With a $4 Average
Fuel prices significantly slowed this week, but a $4 national average is still expected.
Read More →Bob Adamsky on Fuel Volatility: “Don’t Panic — Have a Plan”
With oil prices rising again, AWP Safety’s fleet manager shares how to respond to rising fuel costs and how the right strategy can turn fuel spikes into cost-saving opportunities.
Read More →
Oil Market Turbulence Is Complicating Fleet Cost Planning
Rapid swings in crude oil prices driven by the conflict in the Middle East could create longer-term cost pressures for fleets, affecting fuel prices, supply chains, and vehicle strategy, says NTEA’s Andrew Wrobel.
Read More →
February Fuel Update: Prices Inch Higher for Third Week in a Row
The final February fuel update reveals prices continuing to inch higher for the third week in a row.
Read More →
The 2026 Fuel Economy Guide: Updated Cost and Efficiency Benchmarks for Fleets
Fleet managers can use the DOE’s 2026 Fuel Economy Guide to benchmark MPG across powertrain types using side-by-side vehicle ratings and compare new model-year options.
Read More →