The difference between a car that gets 20 MPG (miles per gallon) and one that gets 30 MPG amounts to $1,800 over 5 years, assuming gas costs $1.80 per gallon and one drives 12,000 miles a year.

Alliance to Save Energy, 2005

Improvements in automobile efficiency since 1973 are saving consumers $151 billion in 2004 alone—more than twice as much as the federal government spends each year on education.

Alliance to Save Energy, 2005