AUTOSTAR 094 Air Filter for Mercedes Benz GLC X253 W276 2012-2020 The air filter is a vital component in your vehicle's engine system. It plays a crucial role in maintaining engine health by capturing and filtering contaminants from the incoming air. This ensures your engine gets fresh, clean air, which is essential for optimal combustion and overall performance. A clean air filter can improve fuel efficiency, reduce emissions and extend engine life.