Diagnostics are an important aspect of modern vehicle maintenance and repair. Your car or SUV is equipped with an array of computers and sensors which monitor your engine activity, and flag anything that isn’t operating as it should. At National Brake & Muffler in Griffin, we are experts in performance and luxury automobile repair - and when diagnosing the problem is sometimes the most difficult part of the process, an expert is what you need. For cars like Audi, Porsche, BMW, VW, MINI, and Subaru, selecting the right shop is key to correctly diagnosing and correcting any sort of malfunction.