VW Cabrio mass air meter. The VW mass air flow meter measures the amount of air that the engine takes in so that the correct amount of fuel can be added. They can be physically damaged if unfiltered air is allowed into the intake or contaminated if oils are drawn in with the air. If yours isn't reading correctly it will cause your mileage to drop or the engine to run poorly; replace it.
VW Cabrio mass air meters are sensitive to unfiltered air; make sure to pick up a new air filter to keep it protected. You can purchase every filter for your car in one of our handy dandy filter kits, and then they will be on hand when you need them. Plus you save money.