About Us

We are changing the way consumers look at auto repair. We promise that all of our work will meet or exceed the manufactures specifications. We warranty all our work for 3 years , 36,000 miles.Provide our technicians the most up to date training. And we will never try to sell you services or work that is not needed. We have earned our reputation for quality and being able to correctly diagnose the most difficult problems. Quite a few local shops and even Dealerships, call on us to repair they're most difficult problems.

How We Got Started

After 35 years in the automotive industry, I was growing frustrated because I would see technicians who were not qualified, working on vehicles they were not able to fix. Yet, the dealership would continue to charge the customer for repairs that did not repair the customers concern. I did not want to be associated with that type of service. Yet, I found this is a common practice among most repair shops today

Products & Services
From a simple oil change to complete overhaul, A.G. Automotive and Diagnosis can get your vehicle back on the road. We specialize in customer satis...
Automotive Restoration by AG Automotive & Diagnosis
Does your classic car need a makeover? AG Automotive & Diagnosis specializes in restoring vintage and antique cars to their original glory. Come se...
Come to AG Automotive & Diagnosis for your regular oil change service in Reseda. We're here for fast and reliable service whenever you need it.
Recommendations Given (6)
"Extremely skilled and highly knowledgeable. Explained why we had so many problems just by..." Read more "Extremely skilled and highly knowledgeable. Explained why we had so many problems just by looking at our tank. Saved us thousands of dollars!"
"Excellent service, quick turnaround time, printed a huge 9x36 sign for us in one day! I didn't..." Read more "Excellent service, quick turnaround time, printed a huge 9x36 sign for us in one day! I didn't even know you could print something that large!"
Recent Activity

Chuck from AG Automotive & Diagnosis Answered this on July 01, 2022
Not by phone! I spent half of my day answering calls from telemarketers. I will never buy a thing from them because of it.  I would rather seek out what I need, rather than be solicited 10 times a day for things I don't want. Especially, loans! (more) Not by phone! I spent half of my day answering calls from telemarketers. I will never buy a thing from them because of it.  I would rather seek out what I need, rather than be solicited 10 times a day for things I don't want. Especially, loans!

Chuck from AG Automotive & Diagnosis Answered this on March 02, 2019
I find customer referrals are the best, followed by Yelp and Google. (more) I find customer referrals are the best, followed by Yelp and Google.

Our Recognition

We're highly recommended by locals on Alignable

Highly Recommended

By 5+ Local Business Owners!