What is Auto Stop-Start? The Auto Stop-Start or Engine Stop-Start (ESS) vehicle feature is designed by auto manufacturers as an attempt to improve fuel economy while a vehicle is at rest. How this feature works is by when the brake is applied and the vehicle is stopped, the engine temporarily turns off and automatically restarts as the brake is released. Unfortunately, real-world fuel savings are minimal and this functionality is forced upon consumers without an option to permanently disable auto start-stop.
