German Car Specialists is in my opinion the premier shop for services and mechanical repairs of German cars. From personal experience with my Audi I can say that going to Berk’s shop is far better in terms of quality and value than the local dealer. Berk and his team really know German cars. I recommend German Car Specialists without hesitation.
I took my Audi A4 2.0T to Berk for an oil change during the second week of April 2017 for a morning appointment. The oil change was completed in a timely manner. Also had Berk troubleshoot a check engine light. During checkout I was informed my vehicle needed a purge valve replacement and that I was in need of a timing belt change (scheduled maintenance). I was quoted a total of $1075 for both items. I brought my car in three weeks later (4 May 2017) for the needed maintenance. My Audi was completed sooner than expected and it turns out my cost was a little cheaper than quoted.
TL;DR - Berk was attentive to the needs of my car, service was quicker than on-time, and customer service was excellent. I will continue to be a customer for the lifetime of this Audi and any future Audi's I may acquire.