As it seems that I am constantly pumping money into my black hole of a gas tank, I wanted to know how many miles a full tank of gas lasts me. I did an admittedly rudimentary expiriment, and I have some raw data, but I still don’t know if I get good mileage or not.
Here’s the deal: I purchase a full tank of gas for $20. I buy Supreme (my car is old and runs better on it) at $1.579 a gallon. This buys me 12.66 gallons (with the little hat over the .66) - 20/1.579.
Then I kept track of how many miles I drove on that tank. Grand total? 176.9 miles. So 176.9/12.66 = 13.97 miles per gallon.
How good is this? My car’s old and I’ve always thought of it as a gas hog. But is this good mileage per gallon? I’ve researched it but all I get are comparative listings, and I would rather now what some of you car experts out there think of 14 miles/gallon, or 177 miles/tank.
Since I know at least 90% of Dopers know more about cars than me, I welcome all advice or WAGs.