Democratic leaders in the U.S. House reached a deal late Friday night to raise fuel-economy standards for cars and light trucks to an average of 35 miles per gallon by 2020 — a 40 percent increase from today’s standard of 27.5 mpg for cars and 22.2 mpg for SUVs and pickups. House Speaker Nancy Pelosi (D-Calif.), who’s been pushing for an increase, came to agreement with House Commerce Committee Chair John Dingell (D-Mich.), a longtime defender of automakers in his state. Dingell called the new standards “both aggressive and attainable.” He made sure they included a provision that lets automakers continue getting credit toward mileage goals for selling flex-fuel cars that can run on a blend of gasoline and ethanol. The mileage measure is part of a larger energy bill that the House is expected to vote on and approve on Wednesday. The fuel-economy provision also has the support of key senators. Pelosi called the mileage compromise “an historic advancement in our efforts in the Congress to address our energy security and laying strong groundwork for climate legislation next year.”