• The plot is based on data for 6818 popular car models in the world market. Data courtesy of Granta Designs from their "Cambridge Eco-Selector" database. An educational version is available.
• It shows fuel consumption (miles/gallon) vs. CO₂ emissions (grams/kilometer)
• “Combined” refers to the urban/extra urban fuel economy rating published for all vehicles in the EU. The “CO₂ rating” is also taken from standard published data.
• Note that all Greenhouse gases are converted to CO₂-equivalent using appropriate conversion factors, similar to that shown in slide 14 of the Climate Change Resource.
• There is a strong correlation between fuel economy and GHG emissions