Save money at the pump with this answer to how to get better gas mileage with this fuel mileage hack. This is how you can get better MPG you never thought possible. If you want way better fuel economy, if you want better miles per gallon, follow the instructions in this video to see your mileage per gallon jump higher than you ever thought I could. In some vehicles, like the 2007 Nissan Quest I show you in this video, can get two, three,even four times as much fuel economy!