Hummer versus Prius: “Dust to Dust” Report Misleads the Media and Public with Bad Science

Published: May 2007

Authors: Peter Gleick

Pages: 7



The claim that a Hummer H3 SUV has a lower life-cycle energy cost than a Toyota Prius hybrid caught the interest of the media and the public when the automotive marketing company CNW Marketing Research, Inc. released its 2007 study, “Dust to Dust: The Energy Cost of New Vehicles From Concept to Disposal.” This report finds that the CNW Marketing Research, Inc. study presents selective and unsupported assumptions that seriously distort the final results. A re-analysis with peer-reviewed data leads to a completely opposite conclusion: the life-cycle energy requirements of hybrids and smaller cars are far lower than Hummers and other large SUVs.