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Old 02-23-2009, 03:43 PM   #2 (permalink)
superchow
Master of 140 hamsters
 
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Join Date: May 2008
Location: Lacey, WA
Posts: 183

Hamster - '07 Honda Civic EX
90 day: 29.41 mpg (US)

Whooshy Wagon - '04 Volvo V40
90 day: 23.33 mpg (US)

Minotaur - '09 Ford Taurus X SEL
90 day: 19.05 mpg (US)
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The automatic may actually do some engine braking on downhills when in cruise control, whereas just coasting down a hill may not do that. And when engine braking the engine stops injecting fuel - free miles!

Not sure if you manually shift into a lower gear when coasting down a hill to keep the same speed or slowing down, but it yielded great results in our "once upon a time" Oldsmobile Cutlass Ciera.
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