Automaker Rankings 2007

The Union of Concerned Scientists' 2007 rankings identify Honda as the 'Greenest Automaker' and DaimlerChrysler as the most polluting based on 2005 emissions data. The analysis evaluates eight companies representing 96 percent of the U.S. vehicle market, using a 50/50 weighting of smog-forming pollutants (NOx and NMOG) and global warming pollutants (CO2-equivalent). While Honda and Toyota lead in consistency across vehicle classes, the report notes that conventional technologies could reduce global warming emissions by 40 percent, and hybrids could offer further reductions.

• Honda is ranked as the most environmentally friendly automaker for the fourth consecutive time, achieving the best smog performance in four of five vehicle classes and better-than-average global warming scores across all classes.
• DaimlerChrysler is identified as the most polluting automaker, exhibiting the worst global warming performance in half of its vehicle classes and producing more smog with its small pickup trucks than any other automaker's vehicle class.
• Toyota is the only major automaker that has consistently improved its global warming performance since 2001, attributed to the use of hybrids and improved conventional technology.
• The analysis indicates that conventional technologies have the potential to decrease global warming emissions by 40 percent, with hybrids capable of further reductions.
• General Motors is noted as the primary seller of vehicles with city driving fuel economy of 15 mpg or lower.

APA

Union of Concerned Scientists (2007). Automaker Rankings 2007. https://www.ucs.org/sites/default/files/2019-10/autorank_brochure_2007.pdf

Chicago

Union of Concerned Scientists. Automaker Rankings 2007. 2007. https://www.ucs.org/sites/default/files/2019-10/autorank_brochure_2007.pdf.

Wikipedia

{{cite report |author=Union of Concerned Scientists |title=Automaker Rankings 2007 |date=April 2007 |url=https://www.ucs.org/sites/default/files/2019-10/autorank_brochure_2007.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{unionofconcernedscientists2007automaker, author = {{Union of Concerned Scientists}}, title = {{Automaker Rankings 2007}}, institution = {Union of Concerned Scientists}, year = {2007}, month = apr, url = {https://www.ucs.org/sites/default/files/2019-10/autorank_brochure_2007.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }