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Show "MORTALITY" OF AVERAGES-MOTOR "Life" of Average Automobile Automo-bile Put at Six Years and Nine Months. The "life" of the average automobile automo-bile 's six years and nine months, while the average cost of operation, for a fiur-cylinder passenger car Is 6.43 cents per mile, and for a six-cylinder six-cylinder machine Is 8.40 cents per mile, based upon an average mileage of 11,000 miles per year, according to the American Motorists' associatJon, In co-operation with the Automobile Club of Illinois. The "mortality" figure is based upon replacement data furnished by automobile auto-mobile manufacturers. The cost per mile is computed from detailed cost accounting records covering 800 typical typ-ical automobiles, operated in various parts of the United States. Maintenance Largest. The largest single item in the composite com-posite "average" automobile, for both the four and six cylinder machines, was maintenance, followed in both types by depreciation and gasoline consumption. Following is a comparison com-parison of the operation costs of the "average" medium four and six cylinder cylin-der types : Items Cents per mile Cents per mite Four cylinder Six cylinder Maintenance ...1.72 2.14 bepreclation ... 1 39 2.09 Gasoline 1.31 1.62 Tires 64 .80 Garage 44 .44 Interest 36 .71 Oil 22 .20 Insurance 21 .26 License 14 .24 The aboy.e figures are computed on a oiiieage of 11,000 miles per year, getting an average of 17.53 miles per gallon of gasoline for the average four-clyinder car and 13.19 miles per gallon for the iverage six-cylinder car. Operation Cost. For the light four-cylinder model, the average operation cost is shown to be 6.02 cents per mile; the heavy four-cylinder average type ' Is 7.20 cents per mile; the light six type is 7.38 cents per mile, and the heavy six-cylinder type is 0.45 cents per mile. |