Every few years, UCS takes a look at the auto industry’s emission reduction progress as part of our Automaker Rankings series of reports. This year’s analysis, based on model year (MY) 2017 vehicles, shows that the industry has once again reached the lowest levels yet in both smog-forming and global warming emissions from new vehicles, despite the fact that many off-the-shelf technologies are deployed in less than one-third of all new vehicles. Unfortunately, this record-setting trend in progress also shows some indications of slowing down, with Ford and Hyundai-Kia showing no progress towards reducing global warming emissions, and Toyota actually moving backwards.
