I cannot say enough good things about my experience at National Transmission. I had brought my BMW to the dealership, who told me that I needed a new transmission and that this would cost me $7300. Wanting a second opinion, I take my car to Brock. He determined that it was a computer/sensor issue, not a transmission problem. He explained the problem to me in detail. Following up with BMW, I took it up to the Shop Foreman, who later admitted that they were wrong. Brock went above and beyond to recommend a better place to take my BMW to get this issue fixed and even set up an appointment. THANKS BROCK!