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Old 08-27-2010, 02:36 PM   #4 (permalink)
Left Lane Ecodriver
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Join Date: Aug 2008
Location: Buffalo, NY, USA
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Prius C - '12 Toyota Prius C
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You're not using any fuel while you DFCO, but it saps the vehicle's momentum to keep the engine turning. You're going to have to burn fuel to get that momentum back. DFCO will give you better mileage than using the brake pedal, but less mileage than driving without brakes and engine-off (or maybe even engine-on) coasting to a stop.
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