A car engine can use as much as half a gallon of fuel after idling for an hour. Why is 'idling' so bad for cars? What to know about the downsides of leaving engines on first appeared on The Cool Down.

When you’re picking up a friend, waiting inside your car by the curb, what’s the most efficient thing to do? Does it take more gas to start a car or leave it running? It was previously believed that ...

Letting your car idle unattended to warm up is illegal in many states and could result in a fine. Thirty-one states and Washington, D.C., have some form of regulation against vehicle idling. Modern ...

With freezing winter weather blanketing much of the U.S., it may be tempting for commuters to warm up the car by idling it for a few minutes before getting in. But drivers should be wary, as many ...

Add Yahoo as a preferred source to see more of our stories on Google. That old habit of letting your car idle for five or ten minutes in the driveway on a cold morning feels caring, but modern engines ...

CLEVELAND — It’s a morning habit we all have during the winter months: we grab our coffee, pull on a coat, start the car and let it idle while we finish getting ready. The goal is to warm it up. A ...