April 19, 2011 Chevy’s I4 Engines Are Good4 Fuel Efficiency! Edit Delete Tags Autopost The numbers don’t lie: In 2007, Chevrolet models with inline four-cylinder (I4) engines represented just 23 percent of the company’s sales. Through the start of 2011, that number had doubled, with 46 percent of Chevy buyers choosing a model with a high-efficiency I4 powerplant. And this trend is sure to continue if fuel prices continue to rise—but Chevrolet is well prepared for that eventuality said Rick Scheidt, the brand’s U.S. vice president.