Did you know a dirty air filter can severely decrease the performance of your vehicle and lower your gas mileage? Just like you and me, your vehicle needs to breathe. However, the air quality outside is not always the greatest. Your vehicle filters the airflow to your engine through the engine air filter. Over time, the filter gets dirty and clogged. When this happens, your engine struggles to breathe, which decreases performance and lowers your vehicle’s fuel efficiency by up to 14 percent. See your owner’s manual for how often your air filter should be checked and replaced.