99.2% would refer friends and family to us

5 stars Customer since 2016

The experience working with Allen and the team is absolutely fantastic. Extremely professional.

5 stars Customer since 2022

GMG provides a no nonsense, matter of fact breakdown of car's potential with GMG products and services! Hard fact statistical and performance information available for the asking! The garage..... AMAZING!

5 stars Customer since 2014

Great service

5 stars Verified customer

I dealt with Allen and he was very forthright and honest about the alterations I was debating to make on my car. He was not exaggerating at all about the difference these changes would make. I am thrill with the work done!

5 stars Verified customer

Always excellent service and attention to detail.

5 stars Customer since 2021

This is the only place for me. My porsche will not be serviced anywhere else.

5 stars Customer since 2019

GMG is my go to shop for all things relating to Porsche, wouldn't go anywhere else. The highest quality performance/race garage in So Cal, yet they still take the time to service our sedan. Your basically taking your vehicle to a top teir race team for service. Weve been treated like family since our first visit and truly appreciate both Allen and Scott for providing excelent service and taking such good care of us.

5 stars Verified customer

Only place for my porsche

5 stars Verified customer

I have always found Allen to be very professional and highly knowledgeable! The work that he recommended as an upgrade to my car made more of a profound improvement than I ever imagined. Thanks so much GMG.

5 stars Customer since 2021

From consultation to installation, the team at GMG has been low key, professional, and given me confidence in their ability to work on my car at top level. Thanks again to Scotty and all those involved with making my Lusso crafted to what I wanted it to be, not the factory necessarily, and not others. The ability to listen is something that will both keep me coming back, and keep me recommending GMG. There is no room for improvement in my multiple experiences there now.