What Do Bug Deflectors Do?

Also called bug deflectors, bug shields are generally strips of plastic that are attached to the front of a vehicle's hood, just above the front fascia. Their design is meant to do one of two things: either block a bug or alter the airflow over your hood to push the bug up and over your windshield.

How effective are bug deflectors?

Studies from Canada's National Research Council (along with Clarkson University) took a look at how drag from bug deflectors might impact your truck's fuel mileage. The results showed that bug deflectors most likely reduce your fuel economy between 1-3% –but that's only when you're traveling at highway speeds.

Do stone and bug deflectors really work?

The answer to the question posed in the first sentence, is a resounding yes! Stone and bug deflectors work by altering the actual aerodynamics of your vehicle. ... While the deflector won't be able to turn everything away from your hood and windshield, it will make sure that most debris won't even touch your vehicle.