In my quest to lower my gas bill I realized buying a new car would negate any actual gas savings. Instead I looked for ways to lower the cost of the gas I do buy. 1. Buy from a warehouse club. Sams and Costco are .10-.20c cheaper than any other station in my area. (YMMV) 2. Pay with a rewards card. There are many that offer 5%, 3% or 2% back on gas purchases. If your getting 5% cash back on your gas purchase and a gallon costs $4 you save an additional .20c of each gallon! In reality you only pay $3.80! Couple this with the already discounted club rate and be the envy of your friends! 3. Top off each time your near the cheapest station but dont make a special trip if its more than a few blocks away. This is just what works for me and it has proven to be quite effective.