Transmission Repair, Rebuild and Auto Service

in San Antonio, TX & the Surrounding Areas

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Transmission Repair & Rebuild

Our local shop specializes in transmission repair, services and rebuilding.

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Auto Repair

We offer bumper to bumper repair for all makes and models.

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Auto Maintenance

Visit us for factory services to keep your car healthy mile after mile.

Full Service Auto Repair

Factory Auto Maintenance

Transmission Repair Specialists

Transmission Rebuilding

Transmission Services

Engine Diagnostics

Complete Auto Repair & Transmission Services You Can Trust

Brakes, Steering & Suspension

Wheel Alightments

Oil Change & Tune Up

12 Month/12K Mile Warrant

Shuttle Services

Early Drop Off

Mendo Motorz AUTO CENTER

Why Choose Mendo Motorz for Auto Repair & Transmission Service in San Antonio

Since 2019, veteran owned and operated Mendo Motorz & Transmissions has been providing expert car repair, auto maintenance and transmission services in San Antonio for drivers of all makes and models.

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Veteran-Owned, Warranty-Backed Auto Repair You Can Trust


Our team of local auto mechanics are dedicated to helping our community keep their vehicles safe and reliable. As a dealership alternative for all automotive services, you can rely on us to deliver exceptional results at competitive prices. With all auto repairs and maintenance backed by a 12 month/12,000 mile warranty, we don’t just deliver quality workmanship, but peace of mind as well. From routine oil changes and brake repair services to complex engine diagnostics and transmission repair or rebuilding, you can rely on our nearby auto shop for all your vehicle’s needs. To learn more, or to request a quote for the cost of auto repair in San Antonio, please don’t hesitate to give us a call or stop by at your convenience.

At our local auto shop, the team at Mendo Motorz takes pride in helping our friends and neighbors in San Antonio keep their cars, trucks, vans and SUVs healthy. To ensure we’re able to deliver the best auto repair services in San Antonio and beyond, we invest in state of the art equipment, ongoing training and are dedicated to excellent customer service. With a comfortable waiting room equipped with free Wi-Fi and coffee, as well as early bird drop off and shuttle options, we hope to make it easy to give your car the attention that it needs. The next time your vehicle is due for auto maintenance in San Antonio, or if you have concerns about what’s going on under the hood or with your transmission, call Mendo Motorz at 726-233-2226. We fix car problems big and small for all foreign and domestic vehicles.

San Antonio Transmission Specialists for Repair, Service & Rebuilds


At Mendo Motorz, we specialize in transmission repair in San Antonio. Whether it’s time for routine services, resealing or a complete transmission rebuild, you can rely on us to deliver optimal results. We service all automatic transmissions, manual transmissions and CVT transmissions for most makes and models. If you experience hard shifting, transmission fluid leaks or notice a burning smell, it’s time to visit our San Antonio transmission shop for proper diagnostics and services.

Paul Flynn

Owner & Operator


Paul Flynn, the driving force behind Mendo Motorz, brings a unique blend of military discipline and academic achievement to the auto repair industry. A former U.S. Army infantry scout and paratrooper with the 2nd Ranger Battalion, Paul’s commitment to service runs deep, inspired by a family legacy of military dedication. After his military career, he pursued higher education at UCLA, earning a bachelor’s degree and honing the skills that would later shape his journey into entrepreneurship.

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Since founding Mendo Motorz in 2019, Paul has combined his military values of integrity, discipline, and commitment to create an auto repair shop that offers dealership-quality service at local prices. His leadership ensures that every aspect of the business reflects a dedication to honest, transparent, and educational customer care. Under Paul’s guidance, Mendo Motorz has become a trusted name in San Antonio, known for its quality workmanship, state-of-the-art equipment, and unwavering commitment to getting customers back on the road safely and efficiently.

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Customer Reviews  |   Your business is very appreciated.

G and stars

I had a fantastic experience at Mendo Motorz! First time customer. I brought my 2015 Nissan Pathfinder in for some work and they did an amazing job from diagnostic to getting it done! Everyone I talked to on the phone and in person were so friendly and explained everything that was happening so well. I had a great experience and will be recommending them to anyone I know who needs a reliable shop!


- Jan I.

Blog  |   We invite you to monitor our News Blog for informative articles.

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By Mendo Motorz & Transmissions September 22, 2026
Your automatic transmission performs an essential job by transferring engine power to the wheels and helping your vehicle shift smoothly between gears. Because transmissions contain numerous moving components, problems can develop due to wear, fluid issues, overheating, and other mechanical concerns. Recognizing potential warning signs and seeking professional attention can help prevent additional damage. At Mendo Motorz & Transmissions, our local mechanics are happy to answer your questions about automatic transmission repair in the greater San Antonio area. What Are Common Warning Signs of Automatic Transmission Problems? Several symptoms can indicate that your automatic transmission needs professional attention. These may include slipping between gears, delayed engagement, jerky shifting, unusual noises, difficulty changing gears, and fluid leaking underneath the vehicle. You may also notice that the engine revs higher than normal without a corresponding increase in speed. Any unusual change in transmission performance should be evaluated promptly. What Causes Automatic Transmission Problems? Transmission problems can have numerous causes. Low or deteriorated transmission fluid can increase friction and heat within the system, while worn internal components can affect shifting and power transfer. Electrical or sensor problems may also interfere with modern electronically controlled transmissions. In some cases, poor driving habits or neglected maintenance can contribute to premature wear. A professional diagnostic inspection is necessary to determine the specific cause. How Important Is the Transmission Fluid? Transmission fluid has multiple important roles, including lubricating internal components, helping control operating temperatures, and supporting smooth hydraulic operation. Low or degraded fluid can contribute to increased wear and shifting problems. Following the vehicle manufacturer’s maintenance recommendations for fluid inspections and service can help support transmission performance. If you notice a transmission fluid leak, it’s important to have it inspected promptly. When Should I Have Transmission Problems Checked? It’s best to have symptoms diagnosed as soon as they appear. Continuing to drive with slipping, harsh shifting, delayed engagement, leaks, or unusual noises can potentially allow a developing problem to become more serious. Early diagnosis gives a technician an opportunity to identify the underlying issue and determine what repairs are necessary. Prompt professional transmission service can help protect the transmission over the long haul. Where Can I Get Automatic Transmission Repair in San Antonio, TX? For expert transmission repair in San Antonio and the surrounding area, contact Mendo Motorz & Transmissions at  726-233-2226  . Feel free to give us a call to schedule an appointment for car care in greater San Antonio!
By Mendo Motorz & Transmissions August 1, 2026
Your alternator is responsible for generating the electricity needed to power your car's electrical systems while keeping the battery fully charged. When the alternator begins to fail, it can create a variety of problems. Fortunately, most alternator issues produce warning signs before complete failure occurs. Recognizing these symptoms early can help you avoid being stranded. At Mendo Motorz & Transmissions, we provide expert alternator replacement and auto electrical system repair in the greater San Antonio area. Here’s a look at five symptoms of alternator trouble. Battery Warning Light Comes On Oftentimes, one of the earliest indicators of alternator trouble is the battery or charging system warning light appearing on your dashboard. Although many drivers assume this light automatically means the battery has failed, it often points to a problem with the alternator or charging system. If the warning light becomes illuminated while you're driving, have your vehicle inspected as soon as possible to determine the exact cause. Headlights and Interior Lights Become Dim A healthy alternator provides a steady supply of electricity to your vehicle's lighting system. When it begins to fail, your headlights may appear noticeably dimmer than usual or flicker while driving. You may also notice fluctuations in the brightness of dashboard or interior lights. Inconsistent lighting is a common sign that the alternator is no longer producing adequate power. Electrical Accessories Stop Working Properly Modern vehicles rely on the alternator to power numerous electronic systems. A failing alternator may cause power windows to operate slowly, dashboard displays to malfunction, the radio to cut in and out, or climate control systems to behave unpredictably. If several electrical components begin acting strangely at the same time, the charging system should be professionally evaluated. Difficulty Starting the Engine The alternator continuously recharges the battery while the engine is running. If it can no longer keep the battery charged, you may encounter slow engine cranking, repeated dead batteries, or a vehicle that won't start after being parked. Unusual Whining or Grinding Noises Whining or grinding sounds could indicate a belt or bearing problem. Any abnormal sounds should be promptly evaluated by a mechanic. Alternator Replacement & Auto Electrical System Repair in San Antonio, TX For expert auto repair in San Antonio and the surrounding area, contact Mendo Motorz & Transmissions at  726-233-2226  . Feel free to give us a call to schedule an appointment for car care in greater San Antonio !
By Mendo Motorz & Transmissions June 22, 2026
Transmission fluid is essential for lubricating internal components, controlling heat, and enabling smooth gear changes. When a transmission develops a fluid leak, it can quickly lead to performance problems and potentially severe damage if left unaddressed. Many drivers notice spots under their vehicle or experience shifting issues and wonder what the next steps should be. At Mendo Motorz & Transmissions, our local mechanics are happy to answer your questions about transmission fluid leak repair in the greater San Antonio area. How Can I Tell if My Vehicle Has a Transmission Fluid Leak? One of the most common signs of a transmission fluid leak is finding red or reddish-brown fluid underneath your vehicle. Other symptoms may include delayed shifting, slipping gears, unusual noises, warning lights, or difficulty accelerating. What Causes Transmission Fluid Leaks? Transmission fluid leaks can develop from several different sources. Common causes include worn seals, damaged transmission lines, and problems with the transmission pan and transmission pan gasket. Over time, normal wear and age can cause these components to deteriorate and allow fluid to escape. Is It Safe to Drive With a Transmission Fluid Leak? Driving with a transmission fluid leak is not recommended. Low fluid levels can cause increased friction, overheating, and internal transmission damage. Even a small leak can worsen over time, potentially leading to costly repairs or complete transmission failure if ignored. How Is a Transmission Fluid Leak Diagnosed and Repaired? A technician may begin by inspecting the transmission for visible signs of leakage and checking fluid levels and condition. Depending on the source of the leak, repairs may involve replacing seals, lines, gaskets, or repairing other damaged components. Once repairs are completed, the transmission is refilled with the proper fluid and tested for leaks. How Can I Help Prevent Transmission Fluid Leaks? While not all leaks can be prevented, routine maintenance can significantly reduce the risk. Regular transmission inspections, fluid services, and addressing minor issues early can help identify worn components before they begin leaking. Keeping up with manufacturer-recommended maintenance schedules is one of the best ways to protect your transmission. Where Can I Get Transmission Fluid Leak Repair in San Antonio, TX? For expert transmission repair in San Antonio and the surrounding area, contact Mendo Motorz & Transmissions at  726-233-2226  . Feel free to give us a call to make an appointment for car care in greater San Antonio !