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 ...

EPA scraps greenhouse gas rules and start-stop credits, potentially lowering vehicle costs and reshaping automaker strategies.

Manufacturers will no longer get a credit toward vehicle emissions standards by installing engines that automatically stop at red lights. By Amanda Holpuch The federal Environmental Protection Agency ...