Car companies are making progress when it comes to producing cleaner and more efficient vehicles. U.S. Environmental Protection Agency’s annual Automotive Trends Report, says for the 2017 model year, Honda led the industry with the lowest CO2 emissions and highest fuel economy, followed by Mazda and Hyundai.  The report looked at CO2 emissions and fuel economy between the 2012 and 2017 model years. During that time, Subaru had the largest decrease in CO2 emissions, followed by Mercedes and Nissan-Mitsubishi. 

The EPA says overall, fuel economy for the U.S. fleet continues to improve. It was 24.9 miles per gallon for model year 2017.  That’s a record high. Their research finds since model year 2004, fuel economy and CO2 emissions have improved in eleven out of thirteen years.