These guys are excellent. Several times they went out of their way to get my truck serviced in a short period of time with even shorter notice. Diagnostics are almost always perfect. Never had any issues with post install performance. I’ve been using this place for several years and they have been servicing my vehicles for almost 70,000 miles. I’m a repeat customer for a reason. EDIT: I've moved away from OKC but have had issues on a newer car that I recently bought. I called the good folks at Car Doctor even 3 years later. They took 15 minutes out of their busy day to help me figure out a problem. Class act. Wonderful people.