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Auto Care and Transmission Services
St Charles, MO
12-Month or 12,000-Mile Part and Labor Warranty
3-Year or 100,000-Mile Warranties Available
Low-Cost Transmission Inspections
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Comprehensive Transmission and Automotive Services You Can Trust
When your vehicle needs expert attention, you deserve a team that treats you like family and your car like their own. Cottman Transmission and Total Auto Care has been serving drivers throughout St. Charles and St. Charles County for over 35 years, and we're proud to be a locally and family-owned business you can count on. Our ASE-certified technicians specialize in transmission repair and rebuilds, but we also provide comprehensive auto care services including brake repair, engine diagnostics, oil changes, tire services, and Missouri state inspections.
We've earned our reputation as a 2025 CARFAX-rated service center by combining skilled workmanship with honest communication. Every service we perform is backed by our 12-month or 12,000-mile warranty on parts and labor, with extended warranties available up to 3 years or 100,000 miles. Whether you're dealing with a transmission concern or simply need reliable maintenance, our experienced team is here to keep you safely on the road. Contact us today to schedule your appointment and experience the difference that decades of expertise and genuine care can make.

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Why Choose Us
12-Month or 12,000-Mile Part and Labor Warranty
3-Year or 100,000-Mile Warranties Available
Low-Cost Transmission Inspections
Licensed and Fully Insured
High-Quality Services
ASE-Certified

Auto Repair Shop
Our full-service facility handles all your vehicle maintenance and repair requirements with precision and reliability.
Specialized Transmission Services
We focus exclusively on transmission systems and deliver specialized transmission services in St Charles, MO that general mechanics can't match.

Transmission Diagnostics and Inspections
Advanced diagnostic equipment identifies transmission issues accurately. Our low-cost inspections provide clear answers before expensive repairs.

Transmission Repair
Our certified technicians restore transmission performance with guaranteed workmanship, from minor adjustments to complete rebuilds.


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CP #1 Headline
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CP #1 CTA Lead-in
Not valid with any other offers or promotions. Restrictions apply.
Must mention this coupon at the time of scheduling.

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Here's what our satisfied customers are saying...
At Cottman Transmission and Total Auto Care, we take pride in providing exceptional auto services to our customers. We would be grateful if you could share your thoughts about our business with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review of Cottman Transmission and Total Auto Care and let others know what you think.
Frequently Asked Questions
What warranties do you offer on your repairs?
Our entire team consists of highly skilled technicians who carry ASE certifications. When you need a reliable transmission service in St Charles, MO, our team has passed rigorous testing to prove their technical knowledge and competence. We make sure our staff stays up to date on modern vehicle systems so they can accurately diagnose complex issues. You can rest easy knowing your car is in capable hands.
If you're looking for even more protection, we've got extended coverage options available for major repairs. You can upgrade to a 3-year or 100,000-mile warranty depending on your specific needs. These extended plans offer long-term security for significant investments like a complete transmission rebuild. Just ask our team about the details when you come in for your repair estimate.
Do you only fix transmissions, or do you handle other auto repairs?
While we're known for our outstanding transmission service in St Charles, MO, we're a full-service auto repair shop. Our technicians handle everything from routine oil changes and tire rotations to complex engine diagnostics. We perform regular maintenance like replacing belts, checking hoses, and flushing radiators. You don't have to visit multiple shops because we can take care of your entire vehicle here.
We also manage major system repairs for brakes, steering, suspension, and automotive air conditioning. If your check engine light comes on or your battery dies, we have the tools to pinpoint the problem. We even provide official Missouri state inspections for local drivers. Our goal is to be your single point of contact for all your automotive needs.
Are your mechanics certified?
Our entire team consists of highly skilled technicians who carry ASE certifications. This means they've passed rigorous testing to prove their technical knowledge and competence in automotive repair. We make sure our staff stays up to date on modern vehicle systems so they can accurately diagnose complex issues. You can rest easy knowing your car is in capable hands.
We're also proud to be recognized as a 2025 CARFAX-rated service center. Our locally and family-owned shop has been providing quality transmission service in St Charles, MO for over 35 years. That extensive experience translates to efficient and effective repairs for every car that rolls into our bays. We've seen practically every type of mechanical issue and know exactly how to fix it.
Can you perform Missouri state vehicle inspections?
Yes, we're fully authorized to perform official Missouri state inspections at our St. Charles facility. We meticulously check all required safety and emissions components to ensure your vehicle meets state regulations. Our technicians test your brakes, steering, lights, and other vital systems to verify they operate correctly. If your car passes, we'll provide the necessary documentation so you can renew your registration.
If your vehicle fails the inspection, we'll clearly explain which components didn't meet the standard. We can typically perform the required repairs right here in our shop, so you don't have to go elsewhere. Once we've fixed the problem, we'll re-inspect the vehicle to get you safely back on the road. It's a seamless process designed to save you time and frustration.
What's included in your transmission diagnostic process?
We start our diagnostic transmission service in St Charles, MO by connecting your vehicle to our advanced computer scanning equipment. This allows us to pull specific error codes and identify exactly what's malfunctioning within your system. We also conduct low-cost physical inspections to visually check for leaks, worn gears, or damaged linkages. This multi-step approach ensures we find the root cause of your shifting issues.
Once we've gathered all the diagnostic data, we'll walk you through our findings in plain language. We'll explain exactly what needs to be fixed and provide a clear plan before we begin any work. We don't believe in surprising our clients with hidden fees or unapproved repairs. Our goal is to give you all the information you need to make an educated decision.
What electrical and engine services do you offer?
We handle a wide variety of electrical and engine issues alongside transmission services in St Charles, MO. If your check engine light illuminates, our advanced diagnostic tools will quickly pinpoint the exact sensor or component causing the alert. We also routinely replace dead car batteries, faulty alternators, and malfunctioning starter motors. We'll make sure your car fires up reliably every time you turn the key.
On the engine maintenance side, we replace worn serpentine belts and cracked radiator hoses before they break. We provide comprehensive radiator service to ensure your engine stays cool during the hot summer months. We also offer automotive air conditioning repairs to keep you comfortable inside the cabin.
What kind of experience does your team have?
Our family-owned business has been proudly serving drivers in the St. Charles community for over 35 years. During that time, we've encountered and resolved nearly every automotive issue imaginable. We've built our reputation on honest communication and skilled workmanship that stands the test of time. We treat every single customer like family and handle their vehicles as if they were our own.
We've maintained a strong track record and recently earned recognition as a 2025 CARFAX-rated service center. We combine decades of hands-on expertise with the latest diagnostic technology. Whether you need a quick tune-up or a significant transmission service in St Charles, MO, when you bring your car to us, you're getting decades of proven automotive knowledge working for you.



