We contacted automakers for their take on this hot-button issue (no pun intended) and got some surprising responses.

The automatic start/stop function shuts off the engine when your car is idling. But just how much does this technology really save you on gas?

The Trump EPA is stepping up once again —this time to save Americans from the inconvenience of buying less fuel. In response to feedback from “countless” Americans, EPA administrator Lee Zeldin said ...

Today’s vehicles are designed to maximize fuel economy in numerous ways. One such feature is the automatic start/stop function that shuts off the engine when your car is idling and restarts it when ...

The EPA, under the Trump administration, has eliminated the credit for the "almost universally hated" auto start-stop feature ...

Start-stop is a relatively small feature with a dense engineering stack behind it. Modern systems tie together the engine control unit, starter-alternator hardware, beefed-up 12-volt or ...

Nobody really likes the tech, so the feds are apparently about to tell automakers to make some changes.

Many newer cars have a function that turns off the engine when the vehicle is stopped. Should you be leaving that function on or turning it off during the gas crisis to save money? The national ...

As fuel-economy rules get stricter, lithium-ion batteries may no longer be limited to electric cars. An increasing number of new cars are now being fitted with engine start-stop systems to reduce fuel ...

Start/stop technology can mitigate this waste. Some three dozen car and truck models already available in the U.S. have start/stop systems of one sort or another. By 2015, this is expected to extend ...