Automatic engine stop‑start was sold as a painless way to cut emissions and fuel bills, a tiny software trick that would shut the engine off at red lights and fire it back up when the driver lifted ...

Automakers produce vehicles with standard driver-assistance and safety features that can sometimes feel unnecessary. The auto start-stop feature does benefit a specific type of driver in certain ...

But does this tech actually do anything? Obviously, an idling engine uses fuel, while an engine that’s off does not. But restarting that engine does use fuel. So which one has more of an impact? Well ...

Start/stop systems are among the simplest ideas in automotive history—turn off the engine when you don’t need it, save fuel, and start again when you do. Passenger cars embraced this decades ago, but ...