99.0% would refer friends and family to us

5 stars Customer since 2016

Thanks to Allen Ward and the team at GMG my car is always well taken care of and generates lots of favorable comments wherever I go. Unbelievable service and expert knowledge they're the best.

5 stars Customer since 2018

good morning Allen, nice to meet you and the rest of the team at GMG.

i’ve drove my car all day and perfect.

i’ve really appreciate your professionalism and will keep you in mind for any of my needs.

kind regards


5 stars Verified customer

You treat my car as if it was your own.

5 stars Customer since 2015

Excellent service as always

5 stars Verified customer

Scott and the team at GMG were tremendously helpful throughout the entire process. I was very impressed with their product offerings, knowledge of individual vehicle(s) and what best fits with each, and quality of installation. I spent a great deal of time researching competitors and found the breadth of capabilities at GMG to be unmatched.

If you're a discerning customer looking for top flight service, parts and follow through post sale/installation, there's no better place to go than GMG, particularly in southern California. I highly recommend these folks - 10/10 experience.

5 stars Verified customer

As always a great experience !.. Allen is the best..

Jim Hodson

5 stars Verified customer

I wouldn't take my Porsche anywhere else

5 stars Customer since 2016

AS always, great service on my GT3

5 stars Customer since 2018

Fantastic experience for a guy whose owned over 25 Porsche’s and loves perfection

5 stars Customer since 2017

Awesome service as always!!