2007 Honda Civic Owner's Manual - Page 187

Fuel Economy, Accessories and Modifications Try to maintain a constant speed. Every time you slow down and speed up, your vehicle uses extra fuel. Use cruise control when appropriate. Combine several short trips into one. The air conditioning puts an extra load on the engine which makes it use more fuel. Use the fresh-air ventilation when possible. Accessories and Modifications Modifying your vehicle, or installing some non-Honda accessories, can make it unsafe. Before you make any modifications or add any accessories, be sure to read the following information. Accessories Your dealer has Honda accessories that allow you to personalize your vehicle, or improve its performance. These accessories have been designed and approved for your vehicle, and are covered by warranty. Although non-Honda accessories may fit on your vehicle, they may not meet factory specifications, and could adversely affect your vehicle's handling and stability. Improper accessories or modifications can affect your vehicle's handling, stability, and performance, and cause a crash in which you can be hurt or killed. Follow all instructions in this owner's manual regarding accessories and modifications. When properly installed, cellular phones, alarms, two-way radios, and low-powered audio systems should not interfere with your vehicle's computer controlled systems, such as your airbags and anti-lock brakes. 186