Operation CHARM
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Saturn
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2000
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SL2 L4-1.9L DOHC VIN 7
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Repair and Diagnosis
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Powertrain Management
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Fuel Delivery and Air Induction
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Description and Operation
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Factors That Affect Fuel Economy
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Vehicle Wind Resistance
Vehicle Wind Resistance
More wind "drag" means less fuel economy. Thus, hang on luggage carriers, car toppers, open windows, open sunroof and/or an open trunk mean less fuel economy.