About these tips ... (A.K.A. Don't Be Stupid!!) Discuss these tips and suggest additional ones in the forum. Adjusting the nut behind the wheel is arguably the most important modification a person can make to his or her vehicle. While a modified vehicle will get better MPG regardless of the driver, driving techniques have the added advantage of being free and portable - you can bring your fuel saving skills to any vehicle you drive. Note that the list on this page describes some techniques that may be illegal in some areas, and potentially unsafe (or inconsiderate) depending on the traffic situation where they're used. So don't be stupid! Make safety your first priority. Use good judgment and be considerate toward drivers around you. Take care to learn new techniques in an isolated environment, and incorporate them gradually into regular use. Credit: while the techniques in this list have been developed and promoted by a multitude of efficiency-minded drivers for decades, the names/labels of some of the tactics were coined and popularized at CleanMPG.com, which has worked hard to raise the profile of fuel efficient driving (hypermiling) in recent years.