Cold winter mornings often prompt drivers to start their cars and let them idle before driving. This practice stems from ...

There are differing opinions on how long an engine should idle and warm up before the car is driven, and this difference of opinion stems from changes in technology. Some say you should let it idle at ...

Many drivers wonder if they should turn off their engines while waiting at red lights to save fuel. Research shows that turning off a warmed-up engine for stops lasting just 10 seconds or longer can ...