Have you considered trading in your gas-guzzling vehicle to save money on gas? Well, if youâ€™re going to do it for the environment then do it, but if youâ€™re doing it to save money, consider these figures. I drive a Nissan Frontier Crew Cab truck that gets about 18 MPG. I like a large vehicle for comfort, and I like having a truck as a second vehicle. But being money minded I thought about getting rid of my truck to save money on gas. I looked at the Honda Civic Hybrid, rated at 47 MPG. It is much smaller, and not a truck when I need a truck, but I was interested in doing the right thing. Then I sat down with a calculator and learned the following: My Frontier costs 15.8333 centers per mile to run (just considering gas) where a Civic Hybrid would cost 5.9375 cents per mile, for a difference of 9.8958 cents per mile. These figures are using $2.85 as the price of gas. My 2002 loaded out Frontier is worth about $11,000 as a trade-in, and the 2005 Civic Hybrid sells for $21,450 with no fancy trim. That leaves $10,450 as the difference in buying the Civic as a replacement for my truck. Using those figures it would take 105,600 to pay for the new vehicle in savings at the gas pump. Considering I drive about 10,000 miles per year (or less) in my second vehicle it would take me over 10-years save enough money to pay for a car that for my purposes is less comfortable and doesnâ€™t do all the things I need it to do. When I buy my daughter a car in a few years I have no doubt that Iâ€™ll be looking for a car with a good safety rating and as high an EPA rating as possible. But to replace a car that you currently own to save money due to the new high gas prices, use a calculator and figure out just how much you will really save. You might learn that you will not save anything at all.