News release: “A wide array of commercially available technologies can significantly reduce fuel consumption in passenger vehicles, says a new report from the National Research Council. Assessment of Fuel Economy Technologies for Light-Duty Vehicles reviews the technologies and provides estimates of how they would affect vehicle purchase prices…Using a 2007 base vehicle, the committee estimated the potential fuel savings and costs to consumers of available technology combinations for three types of engines: spark-ignition gasoline, compression-ignition (CI) diesel, and hybrid. According to its estimates, adopting the full combination of improved technologies in medium and large cars and pickup trucks with spark-ignition engines could reduce fuel consumption by 29 percent at an additional cost of $2,200 to the consumer. Replacing spark-ignition engines with diesel engines and components would yield fuel savings of about 37 percent at an added cost of approximately $5,900 per vehicle, and replacing spark-ignition engines with hybrid engines and components would reduce fuel consumption by 43 percent at an increase of $6,000 per vehicle.”