The Environmental Protection Authority (EPA) in the United States is targeting automatic stop/start systems in new cars.
The EPA administrator Lee Zeldin plans to 'fix' stop/start tech, which could mean a ban or removal of the technology from new vehicles.
Automatic stop/start systems play a significant role in helping automakers meet emissions regulations, but there has been skepticism over their fuel and emissions savings.
The EPA's focus on stop/start tech is part of several policies that may impact vehicle emissions in the US, including rolling back environmental regulations and considering abolishing the electric vehicle mandate.