I have my transmission serviced at Mr. Transmission of Marietta at intervals recommended by Buick. The process is always efficient and timely. I drop my car off for maintenance, go to lunch, then pick it up after a couple of hours. The team review their findings and let me know of any potential problems they spotted while working on my car. I know I can trust them to tell me the truth. And they charge me what they quoted. It's a fantastic experience.