What is the gas mileage on a 1988 Cadillac Sedan Deville?

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According to fueleconomy.gov http://www.fueleconomy.gov/feg/noframes/4632.shtml

Fuel Type = Regular
MPG (city) = 15
MPG (highway) = 22
MPG (combined) = 18

Fuel to Drive 25 Miles = 1.39 gal

Based on 15000 annual miles and a fuel price of 3.01 per gallon:
Cost to Drive 25 Miles = $4.18
Annual Fuel Cost = $2510

Annual Greenhouse Gas Emissions = 10.20 tons
Best of all vehicles = 3.5 tons
Worst of all vehicles = 16.2 tons

I own (and drive) an '88 SDV. My mileage is 10-20% higher. I attribute this to very careful driving.

Moby (my Great White Caddy) has an on-board computer that lets me monitor fuel consumption: instantaneous mpg, average mpg, and projected driving range based on available fuel and average mpg.

It's amazing how conscious of driving one can be when given good information.
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