The cabin air filter (also well-known as the pollen filter, AC filter, dust filter, hvac filter and also hepa filter) in your 2014 Volkswagen Jetta cleans the air the you and also your passenger breath within of her car. You require to adjust it at least once a year or every 20,000 miles, whichever come first. In addition to improving the air top quality of her Jetta, replacing her cabin air filter will put less strain on her heating and also air conditioning system and can increase your gas mileage. This filters are relatively inexpensive, so inspect out our parts page for good deals ~ above a brand-new one (tip: purchase several, when you walk to inspect the cabin waiting filter on your Jetta, friend can quickly swap it because that a new one if that is dirty).Not every Volkswagens have a cabin air filter and also for some models, the consists of a cabin wait filter relies on what trim level you have actually (SE). If her Jetta smells poor when you rotate on the heater or waiting conditioner, or the seems prefer the pan doesn"t punch air and it supplied to, replacing her cabin air filter is a most likely the finest fix! The video clip above mirrors you wherein the cabin wait filter in your 2014 Jetta is located and also how to check it.