The Environmental Protection Agency (EPA) is considering rolling back incentives for automatic engine start-stop systems, a technology that has been incorporated into millions of vehicles on U.S. roads. EPA Administrator Lee Zeldin announced the proposal on social media, stating that the feature was “where your car dies at every red light so companies get a climate participation trophy.” He added, “EPA approved it, and everyone hates it, so we’re fixing it.”
Background on Automatic Start-Stop Technology
Automatic start-stop technology became widespread due to fuel economy and emissions regulations introduced during the Obama administration. The system shuts off the engine when the vehicle comes to a complete stop and restarts it when the driver releases the brake or presses the accelerator. Proponents claim it improves fuel efficiency and reduces greenhouse gas emissions, while critics argue it can be annoying or even dangerous, causing long-term wear on engines and offering minimal environmental benefits.

Public Reaction and Concerns
Opposition to automatic start-stop systems has grown, particularly among drivers in hot climates or those who experience inconsistent engine restarts. Common complaints include sluggish acceleration, disrupted air conditioning, and concerns about wear and tear on starter motors. Many drivers have expressed frustration that the feature often defaults to “on” at every startup, requiring them to manually disable it each time.
Fuel Savings Debate
While the technology does offer some fuel savings, the benefits vary depending on driving conditions. According to tests by the Society of Automotive Engineers, start-stop systems can reduce fuel consumption by 7 to 26 percent in city traffic. However, the benefits are minimal for highway driving. Alex Knizek, associate director of auto test development at Consumer Reports, noted, “If you’re crawling through city traffic where your engine gets plenty of nap breaks at every red light, then yes, the start/stop system can genuinely cut down on fuel use.”
Regulatory Context
The EPA’s proposed rollback is part of a broader deregulatory effort under the Trump administration. Zeldin’s announcement received a positive response on social media, with many praising the move as a “common sense” decision. The change could significantly impact the automotive industry and vehicle manufacturing standards in the United States.