SERIES TITLE OPTIONAL Automaker Rankings 2018

series title optional

Automaker Rankings 2018

The Environmental Performance of Car Companies

Automaker Rankings 2018

The Environmental Performance of Car Companies

Dave Cooke

June 2018

? 2018 Union of Concerned Scientists All Rights Reserved

Dave Cooke is an analyst in the Clean Vehicles Program at UCS, specializing in both light- and heavy-duty vehicle fuel economy. He conducts research on fuel efficiency technologies and the implications for oil consumption and global warming emissions across the transportation sector.

The Union of Concerned Scientists puts rigorous, independent science to work to solve our planet's most pressing problems. Joining with people across the country, we combine technical analysis and effective advocacy to create innovative, practical solutions for a healthy, safe, and sustainable future.

More information about UCS and the Clean Vehicles Program is available on the UCS website: .

This report is available online (in PDF format) at autorankings2018.

Designed by: David Gerratt, Acton, MA

Cover photo: RainerPlendl/iStockphoto Printed on recycled paper

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union of concerned scientists

[ contents ]

v Figures, Tables, and Boxes vii Acknowledgments

1 executive summary

chapter 1 5 Introduction 5 Brief Description of the Methodology

chapter 2 7 Automaker Performance 7 A Historical Look at Emissions from Passenger Vehicles 8 Automaker Performance Overall 9 Automaker Performance by Vehicle Class 11 Historical Performance and Trends by Vehicle Class

chapter 3 12 Technology 12 Gasoline Direct Injection 13 Cylinder Deactivation 13 Boosted Engines 14 Advanced Transmissions 15 Stop-Start Systems 16 Hybrids and Electric Vehicles 17 Reducing Vehicle Load 18 Reducing Smog-Forming Emissions 20 Summary

Automaker Rankings 2018

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