Ignoring an illuminated check engine light can result in serious engine trouble and costly repairs. At the very least, this warning light could alert you to an engine problem that is negatively impacting fuel economy.

 Your vehicle's tires should be checked frequently for inflation and tread depth. Underinflated tires can wear out more quickly, needing to be replaced sooner, and can negatively impact safety, gas mileage and performance. 

Whether it's stop and go traffic, extreme weather, rough roads or heavy loads, it can sometimes be difficult to limit severe driving conditions. However, you can drive smart and improve fuel economy by observing the speed limit; avoiding aggressive driving, including quick starts and stops; not hauling unnecessary items; and keeping your vehicle properly turned.