The EPA said it will end credits for the start/stop feature, which shuts off gas engines when cars are idle to save fuel.

The Trump EPA is stepping up once again —this time to save Americans from the inconvenience of buying less fuel. In response to feedback from “countless” Americans, EPA administrator Lee Zeldin said ...

Manufacturers will no longer get a credit toward vehicle emissions standards by installing engines that automatically stop at ...

As part of its broader rollback of U.S. fuel economy rules, the Trump administration says it is eliminating a credit for automakers that got breaks on the fuel economy compliance if they installed ...

For more than a decade, automatic engine start/stop systems were sold as painless climate tech, a clever way to trim fuel use by cutting the engine at every red light. Now the feature is rapidly ...