Question

what variables might affect the miles per gallon of an automobile

Answer 1

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The most important vehicle design features affecting fuel economy are vehicle weight and engine displacement. A 10% change in either weight or displacement causes a fuel economy change of 3 to 6%.

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Answer 2

The most important vehicle design features affecting fuel economy are vehicle weight and engine displacement. A 10% change in either weight or displacement causes a fuel economy change of 3 to 6%.