We are a Star Certified Test and Repair Station located in Concord, CA. We offer our customers great service. We have a state-of-the-art facility and professional technicians. We give top priority to customer satisfaction and we strive to satisfy each one of our customers. At Clayton Treat Automotive in Concord, you can receive an affordable and thorough vehicle inspection from the skilled staff. Whether you bring your car in for a quick look-over or an in-depth inspection, you can be sure the specialists at Clayton Treat Automotive will keep your car running smoothly. Stop by today! Clayton Treat Automotive is open Mon. - Sat. for your convenience. WE DO AUTO REPAIR AS WELL AS SMOG. We offer the following services and more: brakes, oil changes, tune-ups, suspension, check engine light diagnostics/diagnostics, diagnostics for smog failure and repair. Smog Check Star Certified Brakes & Tune up A/C service Check Engine Light Diagnosis Shocks & Suspension Electrical 30K, 60K, 90K Service. Don't let a yearly inspection pass you by when the professionals at Clayton Treat Automotive can provide you a quick inspection at an affordable cost in Concord.. CALL US TODAY (925) 682-4300!