If you drive a car regularly, the odds are high that you'll have to sit and wait in it with the engine running at some point. The practice is known as idling, and it's common to do it during certain ...

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 ...

Your engine feels calm at a stoplight because a hidden idle system keeps fuel, air, and spark in balance. That quiet stability is not luck, it is the result of sensors, valves, and software working ...

You might be relying heavily on your engine hours and overall mileage to determine when to perform maintenance, but you should pay attention to idle hours, too.