The exhaust gas test (AU) is a legally required inspection of the exhaust system of your vehicle. It checks whether the exhaust gas values of your motor vehicle are within the prescribed limits. Since 2010, it has been part of the main inspection (HU), which is carried out in our testing center to ensure road safety. After successful verification, you will receive all necessary information and, if necessary, an expert opinion. For your next HU/AU appointments, you can contact us directly to ensure that your vehicle continues to meet legal requirements.