Yep, pure myth, I've heard the same old saw about turning on a light bulb.

 

man i was wondering this same thing the other day! Im glad the question was answered. I kinda figured that since some new cars have the stop/start technology that idling wasnt as efficient.

 

Cars that have built in stop/start probably have an enhanced starter motor.

I tend to leave the car running unless I'm waiting in line for food. But some of that is history from years ago when I had some unreliable cars.

 

it always seemed like my gas needle would go down whenever i turned off thr car and back on so i usually leave it idling lol odd

 

I let mine idle alot during the winter time but mileage really doesn't decrease. I guess it's because in the summer I push the car a bit but in the winter, I won't push the car driving on snow/ice but I let it idle.

 

I would rather idle it than start it again but that's just me. The new M3 has auto start/stop technology but I don't think I would like that.

 

LMFAOOOOO!!!^^^

 

My Aunt's Honda Accord Hybrid is like this. When you stop the engine turns off.. then release the brake it powers on again..

Our Family's Lexus SUV Hybrid is also like this..