More often than not, well-known parts stores misinform customers. One of the most common misdiagnosis is that a new catalytic converter is necessary because an O2 code setting is off or the check engine light is on. This is a time consuming and expensive mistake, especially considering the price of imported parts. To accurately diagnose a problem with your Volvo, BMW or Volkswagen, more is required than reading codes from an onboard computer. Our facility is staffed with highly trained and certified technicians who deliver the best German auto repair in Marin County. 