• 90 Days Same as Cash financing available.90 Days Same as Cash

    Alliance Transmissions offers customers 90 Days Same as Cash financing, with credit approval. In addition, customers can obtain extended financing up to 2 two years upon approval. Learn more ...

  • Alliance Transmissions & Auto Repair has joined the NAPA AutoCare family.We've Joined the NAPA AutoCare Family

    Alliance Transmissions and Auto Repair is pleased to announce it has joined the NAPA AutoCare family. NAPA AutoCare Centers are built around a quality standard, where independent repair business owners are invited to join based on integrity, qualifications and expertise. Learn more ...

  • checkmarkredIs Car Repair a Hassle?

    Come to Alliance Transmissions for great service at reasonable prices. We offer same-day service on your vehicle and FREE estimates and quotes. Learn more about our Specials, Discounts and 90 Days Same as Cash financing.

  • carkeys

    The Transmission Repair Specialist in San Marcos and North County

    For more than 23 years, Alliance Transmissions & Auto Repair has been providing San Diego county with quality transmission service and auto repairs! And for those customers on the go, we offer FREE local San Marcos shuttle service. Learn more ...

Welcome to Alliance Transmissions & Auto Repair

Alliance Transmissions & Auto Repair is a local leader in transmission repair, transmission rebuilds, and auto repair for San Marcos, CA, and all of San Diego County.

We offer quick in-and-out services and free quotes on any repair. 
Come in today for a free vehicle check.
Our nationwide warranty will keep you out of trouble wherever the road leads you.

Transmission & Auto Repair Services

Alliance Transmissions & Auto Repair has the equipment and expertise to diagnose and repair foreign and domestic cars, trucks, and large vehicles, including motor homes. We specialize in automatic transmission, manual transmission, clutch, and drive line repairs. 

Alliance also provides auto repair and maintenance, including oil changes, tire rotation, and battery testing.

Our Promise to You

Our mission is to build respectful, long-lasting relationships with our customers, employees, vendors, and the community. The Alliance family has old-fashioned ideals, where the customer and their needs always come first.

Convenient Location

We are located in the heart of North County San Diego, just off the 78 on W. San Marcos Boulevard near the movie theater and bowling alley. Alliance Transmissions & Auto Repair effectively services the greater San Diego and Southern California area. Click here for a map and directions.

Certifications & Warranty

Alliance Transmissions & Auto Repair of San Marcos, CA employs ASE-certified Master technicians. We are a member of the Automatic Transmission Rebuilders Association (ATRA), and the Better Business Bureau of San Diego, along with many other affiliations. See all our affiliations.

In addition, we guarantee all of our repairs with an industry-leading warranty that is honored nationwide.