Midland Carwash is the highest rated self-serve car wash in St. Louis. Our exclusive products, together with our state-of-the-art facility, are designed to provide you with the best possible wash, shine, and spot-free rinse. Pull Into An Available Bay! We’re open 24 hours a day, 7 days a week! You’ll always find a clean, well-kept facility at Midland Self-Serve Car Wash. Only gentle cleaning chemicals designed specifically for Missouri driving conditions are used. With equipment that is continuously maintained by our own fleet of skilled service professionals, we stand behind the safety of our washes. Come visit our well-lit, safe, and clean 8-bay facility!