Oklahoma City Auto Repair

Call Us: (405) 942-5523
Mon - Fri: 7:00 AM - 5:30 PM
$34.95 Oil Change
Get your oil changed for $29.95, includes 5qts house brand oil and filter. Synthetic oil excluded. Must present special in advance. Applies to most makes & models, call for confirmation.

Welcome to Milex Complete Auto Care,
Powered by Mr. Transmission

With over 100 years combined in the transmission and auto repair industry, you can be assured that Mr. Transmission Milex® is the best at repairing and maintaining your vehicle. We are nationwide, which means no matter where you travel a Mr. Transmission Milex is close. We pride ourselves on being able to offer a nationwide warranty that is honored by centers across the country. With over 120 locations nationwide, we are able to service your automotive repair and maintenance needs with the most comprehensive automotive repair facility in the industry. You can have confidence that we can satisfy all your needs in one facility.

Milex Complete Auto Care Powered by Mr. Transmission BBB Business Review

100+ Years as Trusted Professionals
FREE Performance
Nationwide Warranty
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FREE Towing on All Major Repairs

What Our Customers Say

Always straight forward and truthful, I never feel like I am being taken advantage of and being a woman that is important to me. Highly recommend.
Sherri W.
I want to thank Roman Combs (Owner), Dan Schrock (Master Certified Lead Tech), and Curtis Davis (Service Advisor) for such a wonderful experience at Mr.Transmisision. I was on a 3000 mile road trip, passing through OKC, when my car began to overheat. It was the night before Xmas eve. They were open on Xmas eve to diagnose and fix my problem in a few ours. Never have I experienced such quality service and hospitality from a mechanic shop before. I can't praise them enough on thier abilities to solve my car troubles, and allow my road trip to continue. If it wasn't for Dan Schrock's expertise, we would had to cancel my trip, leave my car in OKC, and fly to my destination (New York), or fly back home (Southern California).I'm so thankful for their care, I've decided to send the garage a gift basket.
Kent C.
Once again, Roman, Curtis & entire crew provided the kind of exceptional car care & customer service I know I can consistently count on.
Jeff A.
Honest, Dependable, and Fair.First discovered Mr. Transmission / Milex via a mail out to my home a few years back.Have had my vehicles to their shop with very good results.They are Honest for sure. On an old car got a quote from them for a repair which they informed that it was time to retire the old worn out vehicle. I agreed with their assessment and replaced that vehicle.When they tell me that the vehicle will be ready it is not only ready but a dependable job on the repair work.On one of my previous visits, Had a battery issue that they were only going to charge me for 18 minutes of labor... The truck has had no more battery issues since then. Now that is a very honest repair shop.This is a business very worth looking into when you need a vehicle repair done.
Bill Goodhead
Roman & his team did a superb job of taking care of our vehicle needs! Friendly, caring, knowledgeable! Checked out vehicle, communicated findings, & fixed everything to our complete satisfaction.
Jeff Athey
I am always impressed with their knowledge and desire to educate the customer regarding the best and most economical way to keep their vehicle in operation.
Rusty Latenser
A few years back took my car to the dealership to get a headlight replaced. Cost was $200.00+. Same lamp went out again. Mr. Transmission was recommended an employee at a parts store, found the shop, work done at a price of just a little over $20.00! This honest to God fact! Mr. Roman Combs owns an HONEST shop that does quality work at very reasonable rates! You know finding a good mechanic is like trying to find a good doctor! Extremely hard even on a good day! I will not take my car to anyone else! Mr. Combs is Good People! You can trust him!
Mike Brown
LIFE SAVER!!! Lauren & Roman we’re so professional, kind, honest, hardworking & they make a great team. Got my car up and back running in no time, worked with me because it’s not always a breeze getting and picking your car back up! But please check them out for any issues you have with your car. YOU WILL NOT REGRET IT!
Jenice Jacksonn
Hi Jenice, thank you for leaving us a great review! We're happy to have gotten you car back on the road quickly and safely! We're delighted to hear that you enjoyed working with us! We greatly appreciate you recommending us, and we hope to see you again sometime at Milex Mr. Transmission OKC!
Professional, friendly, reasonable, and they go the extra mile. Repaired an oil leak that left a redneck trail of shame in my driveway. They gave me a ride home and did a follow-up examination after a week to make sure all was right. Bonus points for having a shop cat.
Thank you M for taking a moment to offer us a kind word or few. We are excited that you enjoyed your time with us. And we agree, Crazy is quite the addition to our family here. Come visit her anytime


Mr. Transmission Milex – Complete Auto Care takes pride and care in every job we do, and we feel confident that you will be completely satisfied with the work we do. The following transmission warranty categories cover all transmission repair work performed at each independently owned and operated franchise center. Our franchise locations and affiliated centers throughout the continental United States will honor the warranty you have been provided with under the terms and conditions outlined on the back of your repair order. Should there be a warranty claim, said claims or damages will not exceed the total amount of repairs listed on your repair order.

12-month/12,000-mile Warranty

This warranty covers repairs and/or replacement of the transmission, parts, or repairs listed on the front of the repair order against material defects and workmanship for 1 year from the date of delivery or 12,000 miles, whichever occurs first.

6-month Warranty/Unlimited Mileage

This warranty covers repairs and/or replacement of the transmission, parts, or repairs listed on the front of the repair order against material defects and workmanship for 6 months from the date of delivery.

90-day Warranty

This warranty may cover a resealed/recondition transmission, standard-clutch assembly, and torque converter (if applicable) against failure of materials and workmanship for 90 days from the date of delivery.

Additional Warranty Programs

Some of our franchise locations offer a third party extended Warranty (not available in all states). This warranty complies with the provisions of our general warranty and third party warranty contract. This program is not offered at all Mr. Transmission Milex locations. Ask one of our professionals for additional information about extended warranty programs available. Warranty programs may vary. Contact Mr. Transmission Milex for more information.



Oil Changes &Tune-Ups, Factory Maintenance, Preventative Maintenance


Clutch Repair, Transmission Maintenance, Transmission Repair, Truck Transmission


Free Performance Check, Check Engine Light, Diagnostic Services, Engine Repair


Brake Repair


Heating and Cooling System, CV Joints, Drive Train, Fuel System, Steering and Suspension


Emission & Exhaust

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Mr. Transmission - Milex Complete Auto Care - Oklahoma City is committed to ensuring effective communication and digital accessibility to all users. We are continually improving the user experience for everyone, and apply the relevant accessibility standards to achieve these goals. We welcome your feedback. Please call Mr. Transmission - Milex Complete Auto Care - Oklahoma City (405) 942-5523 if you have any issues in accessing any area of our website.