It turns out we’re not the only ones who need fresh air to properly operate. The engine air filter traps the pollutants and debris to keep your engine's peak performance and dependability. Engine air filters should be replaced every 30,000 miles, about the same rate as you would replace your cabin air filter. They are usually located inside a sealed box in the engine bay to ensure the air entering your engine is free from contaminants. If you fail to replace your engine air filter you decrease your miles per gallon and put a strain on your engine component. Bring your vehicle to an ASE-certified automotive shop for a replacement!