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The payback, however, could come quicker for consumers than if they bought a hybrid or a diesel. Kuzak said a diesel engine takes seven years to pay for itself, while a hybrid requires 12 years. The EcoBoost system should pay for itself in 30 months, he said. Ford also plans to use EcoBoost on four cylinder engines. When used with a four-cylinder engine, EcoBoost will use only one turbocharger, said spokesman Said Deep. He said the 2009 MKS with EcoBoost will not be at the North American Internation Auto Show in Detroit, but a concept vehicle called the Explorer America, will have the system. Another way Ford plans to boost fuel economy is by reducing weight. During a December Detroit auto show preview event with reporters, Kuzak said Ford's goal is reduce the weight of its vehicles between 250 and 750 pounds. He didn't say how Ford accomplish its goal or when the weight reductions would start.