New mileage standards would double fuel efficiency

Under new rules finalized by the administration of President Barack Obama, fuel economy for U.S. cars and trucks must reach 54.5 miles per gallon by 2025, up from 28.6 mpg at the end of last year.

Under new rules finalized by the administration of President Barack Obama, fuel economy for U.S. cars and trucks must reach 54.5 miles per gallon by 2025, up from 28.6 mpg at the end of last year.