A bug deflector or bug shield is a useful accessory for vehicles because it can redirect insects away from the windshield to help increase the driver’s visibility. The aerodynamic device attaches to the front end of the hood to create a slipstream effect that lifts debris over the windshield.
Product research site Pro3xpert claims a 90 percent efficiency rate for the bug deflectors that they tested, which suggests that insects still occasionally escape the deflector but at a greatly reduced rate . When bugs splatter on the hood and dry on the surface, the paint is often compromised and may chip. The deflector rests on top of the leading end of the hood, fully protecting it from direct hits and potential damage.
Bug deflectors are often made of heavy acrylic to withstand the force of bugs, rocks, and other loose materials that will come in contact with the device at high speeds. A higher lip will add extra coverage against heavier objects that do not get pulled into the air stream.
Although the deflector is designed to improve the aerodynamics of the space between the hood and the windshield, the device can cause extra drag. Edmonds car buying guide warns that adding a bug deflector will actually decrease the overall aerodynamics of the vehicle and thus decrease the fuel economy.
