The rules now under review require an average of 54.5 miles per gallon (23 kilometers per liter) from an automaker's entire fleet by 2025. "No conventional vehicle today meets that target," the Alliance of Automobile Manufacturers, an industry trade group, said in a February 21 letter to EPA Administrator Scott Pruitt. Hybrid and electric vehicles do, but they make up less than 3.5 percent of vehicles made today, the group said. And with gas prices low, consumers are buying more trucks and SUVs and fewer fuel-efficient vehicles. Automakers fear they will be punished for selling what consumers want to buy.