With higher government fuel-economy requirements looming and gasoline prices soaring in the United States, the new family of Chrysler Group V-6 engines will have the ability to drop to three cylinders when less power is needed. This would raise the company's V-6 fuel economy by 6 to 8 percent. The company also plans to expand its new two-mode hybrid powertrain beyond the Chrysler Aspen hybrid and the Dodge Durango hybrid. Both debut next year.