• Fuel efficiency has improved dramatically in recent years. The average car sold in the United States gets an average of around 25 miles per gallon (MPG).
  • We looked at the most fuel-efficient vehicles on the market today, as well as the least fuel-efficient vehicles.
  • Visit Business Insider's homepage for more stories.

Fuel efficiency has improved dramatically in recent years, in large part thanks to stricter fuel regulations implemented by the National Highway Traffic Safety Administration.

Today, new cars sold in the United States get an average of 24.9 mpg, according to the Environmental Protection Agency .

But just a generation ago, in 1980, vehicles were averaging around 17 mpg, according to the Pew Environment Group.

Vehicle fuel efficiency is an immediately relevant issue for American families. Some drivers spend more than $1,000 dollars annually on fuel . And as added fuel efficiency means reduced carbon emissions, more miles per gallon today means less environmental impact in the long term.

To create a level playing field while considering fuel efficiency, we looked at cars with gasoline-powered combustion engines, not electric vehicles, hybrids, or diesel-engine vehicles, and we excluded trucks and SUVs.

Here are the five most fuel-efficient cars being produced today, along with the four least fuel-efficient ones.

See the rest of the story at Business Insider

See Also:

SEE ALSO: The US could end up running on gasoline forever, leaving electric vehicles to China and Europe