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How much fuel does our engine use when idling?

2476 Views 3 Replies 3 Participants Last post by  DontTreadOnMe86
Preferably with the AC on. Gallons per hour or cc's per minute or something like that.
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Looking back on our 2005 hurricane evacaution where we spent half a day idling and crawling, I think I used about half a gallon per hour (or perhaps just slightly more) in a 2.7L V6 engine in my S4. An engine twice the size seems like it should use about twice as much, which would work out to your estimate of about a gallon per hour.
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