The Environmental Protection Agency is rolling back fuel economy incentives for start-stop technology, a system that automatically shuts off a car’s engine when stopped at a red light or in traffic. EPA Administrator Lee Zeldin announced the decision, calling the feature a “climate participation trophy” that drivers overwhelmingly dislike. The move marks a significant shift in federal policy, reversing regulations that encouraged automakers to include the system in new vehicles. Start-stop technology was introduced as part of Obama-era emissions rules, designed to reduce fuel consumption and lower carbon emissions. The system became widespread, with 65 percent of new cars featuring...