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Old 10-06-2012, 08:42 AM   #43
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What I Drive: 2007 ZX3 5spd, 2012 SE Sedan Auto

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Originally Posted by PWGuy View Post
Ok, I will try warming up the car 5 minutes before my wife leaves to see if the mileage improves.

Thanks for all the suggestions

It will get even worse. Your car gets 0 mpg during the 5 min idle warmup and it will be running full rich. You have to drive trips at least 20 miles long before avg gas mileage will approach reasonable values. When your car is idling motionless it takes forever to warm up. Warm-up strategy is like pouring gasoline down the drain and the engine will wear more due to running cold so much.

Your gas mileage for such short trip sounds great. The alternatives include buying an electric car, walk or ride a bicycle.
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