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29 Reviews of John Koo
December 12, 2025
I was surprisingly amazed that the Roseville Mazda Dealership is nothing like some of the other dealerships in the Roseville Automall. I was very hesitant about driving all the way out there just to b Dealership is nothing like some of the other dealerships in the Roseville Automall. I was very hesitant about driving all the way out there just to be treated like a number for a test drive. When I arrived I was greeted with a warm hello that felt welcoming and appreciated. No used car salesman vibe, not once while I was there, so I ended up deciding to forego the other offers from other dealers and bought a new 2026 CX-90. More
by Cozziex3
Verified CustomerOther Employees Tagged: Jack Willmon
December 02, 2025
Good service, everything went smooth, no hassle and I walked out a happy customer! Period. walked out a happy customer! Period. More
by RIVERA
Other Employees Tagged: John Saiyo, Herbert Perdomo, Max Cuadras, Nathan Stewart, Ronny Mogannam, Nino Christian Alaman, Roger Thurman, Wynette Myers, Garrett Oxnæs , Jai was great! He was my main salesman.
November 09, 2025
We had an awesome experience with Johnny and Jaik. Love my Mazda and live being a repeat customer. Everyone was super friendly, helpful, and professional. Love my Mazda and live being a repeat customer. Everyone was super friendly, helpful, and professional. More
by ellicerilly
Other Employees Tagged: Jaik
October 31, 2025
Johnny Koo was friendly from the start along with an abundance of knowledge, patience, kindness, and humor. He is a terrific salesman that made me feel comfortable. abundance of knowledge, patience, kindness, and humor. He is a terrific salesman that made me feel comfortable. More
by tracyo
Other Employees Tagged: Jaik
October 13, 2025
Thank you, Mazda Roseville, for providing such remarkable and consistent customer service. I want to extend a special note of gratitude to Ronny Mogannam for making my experience stress-free, enjoyable, and and consistent customer service. I want to extend a special note of gratitude to Ronny Mogannam for making my experience stress-free, enjoyable, and memorable. More
by pazdapoc9
Other Employees Tagged: Herbert Perdomo, Greg Park, Scott Holden, Ronny Mogannam
October 12, 2025
I was the easiest car buying experience I've had. Everyone was great. Loved Johnny! Everyone was great. Loved Johnny! More
by diannacorkill
Other Employees Tagged: Max Cuadras
October 09, 2025
John was most helpful with all of our questions. We were never pushed to buy a vehicle, but we wanted to work with John after spending time looking over the vehicle options with him We were never pushed to buy a vehicle, but we wanted to work with John after spending time looking over the vehicle options with him More
by miller10304
Other Employees Tagged: Scott Holden
October 04, 2025
We had the pleasure of working with Jai Edwards. We absolutely love our Jeep and. can’t thank him enough for his patience with us and giving us a great deal! Super friendly staff & service! We absolutely love our Jeep and. can’t thank him enough for his patience with us and giving us a great deal! Super friendly staff & service! More
by Steph Henry
Other Employees Tagged: Max Cuadras , Jai Edwards
September 28, 2025
Returning and loyal customers so trusted Mazda Roseville’s reputation and service. Mr Koo and everyone especially our finance manager were friendly, knowledgeable, and efficient during leasing pro Roseville’s reputation and service. Mr Koo and everyone especially our finance manager were friendly, knowledgeable, and efficient during leasing process and while our other car was in service bay at the same time. More
by AKICHANI
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