An assessment of the potential for diesel engine light-duty vehicles to reduce petroleum consumption and greenhouse gas emissions is presented. Historical diesel vehicle sales behavior is presented and analyzed. Future market penetration and resultant petroleum consumption and emission reductions for advanced diesel engines are projected. Results of a survey of new vehicle buyer attitudes toward improved diesel engines are presented and analyzed. Effects of increased diesel market share on diesel fuel supply and price are estimated. Overall, the outlook for diesels in light vehicles is somewhat promising if pollution issues and consumer concerns about the earlier diesels can be addressed.
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