Fuel Economy and Gas Price Graphic (IMAGE) University of Washington Caption During periods from 1975 to 2009 when gasoline prices were high, automakers placed more emphasis on reducing fuel consumption. Credit University of Washington Usage Restrictions With credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.