Reducing weight will help your MPG but I doubt you will notice the difference on anything less than 500 lbs. Still, it all adds up so if you can shave a little here and a little there, go for it.<br><br>I have just gone through the same thing with my van and after doing a number of things I was able to increase my MPGs by a good 15-20% (which is a $50 savings every 1000 miles I drive).<br><br>1) Tune up the motor. Replace the plugs, filters, fluids, etc so it works at it's best<br>2) Max out the tire pressures (I actually run mine higher actually)<br>3) Drive 55mph! It takes an additional 10% in fuel to drive at 60mph over 55mph.<br>4) Add a front skirt to prevent (as much) air from going under your van<br>5) High altitude = less O2 in the air and your EFI will compensate with less fuel to the motor (less power too)<br>6) Hot weather = less O2 in the air as well... (see above)<br>7) Hold a steady throttle, don't try to power up the hills (even small ones). Let it slow down going up and coast down them.<br><br>I was getting mid 12's before, now I get low 15's on the highways for a 2.5-3 MPG gain. Considering that most of the list has a zero cost (and the others are very cheap) it is free MPG savings. <br><br>The Hypermiling link above is good too. Although there has been recent studies that show slow accelerations to take more fuel then to just normal "get up to speed" acceleration. The theory is that if you accelerate slowly (egg under pedal) you stay in the low-gears longer. Your engine, and it's EFI, works at it's optimum when in top gear... so get in top gear as quickly as you can while accelerating responsibly. Don't drag race, but don't hold up traffic thinking you are saving a penny.