The Honda Civic GX natural gas car has been recognised as the most environmentally-friendly car on sale in America by the American Council for an Energy-Efficient Economy (ACEEE).

Go deeper with GlobalData

Data Insights

The gold standard of business intelligence.

Find out more


This the fifth consecutive year that the car has ranked top of the annually-produced listing marketed as Green Book Online (greenercars.org).


Honda said it was the eighth year in a row it had topped the ranking and that is also held three of the other top 12 positions.


The ACEEE analysis is based on automakers’ test results for fuel economy and emissions as reported to the US Environmental Protection Agency and the California Air Resources Board, along with other specifications reported by automakers.


It then estimates pollution from vehicle manufacturing, from the production and distribution of fuel and from vehicle tailpipes. The scoring is based on air pollution, such as fine particles, nitrogen oxides, hydrocarbons plus greenhouse gas emissions.

GlobalData Strategic Intelligence

US Tariffs are shifting - will you react or anticipate?

Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis.

By GlobalData

Just Auto Excellence Awards - Have you nominated?

Nominations are now open for the prestigious Just Auto Excellence Awards - one of the industry's most recognised programmes celebrating innovation, leadership, and impact. This is your chance to showcase your achievements, highlight industry advancements, and gain global recognition. Don't miss the opportunity to be honoured among the best - submit your nomination today!

Nominate Now