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I'm just going off of my big 'ol 4.0L which dumps a bunch of fuel to start the thing back up. When I start up my Jeep enough times in a row, the fuel guage starts to drop like a rock. I can easily use 1/8 tank from doing that. That's like 75 miles I could have gone wasted. I don't know how exactly how my engine works. But according to Jeep's website, if your going to be idling for more than a minute, shut it off, because you will be using more fuel than if you shut it off and turned it back on.
On more modern vehicles, I could see this. I could definitely see this in my moms Caliber. But what I don't see is how when you crank the engine how it could only add up to .2 seconds of idling. it revs up to almost twice Idle, dumps in fuel in the time the vehicle is cranking, and you're stopped at the light even still, and if you throw it in gear while the rpms are up, you jerk forward and cause odd transmission jerkyness. I could see 5-10 seconds, but not that small of an amount.
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