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Welcome To Diamond Motors

We are a New Vehicle Personal Auto Buying Service and only sell pre-owned vehicles that we feel are worthy to resell. Most of the vehicles we have for offer are 1 owner and originally purchased from us and traded in for a new vehicle. All vehicles are safety inspected with a Clean California Title and can be purchased with a warranty.

Please call ahead 650-493-5200 to schedule an appointment to view any of our vehicles. We have another storage lot where the vehicles are stored.
Diamond Motors 1217 South Railroad Ave. San Mateo, CA 94402


Our Hours

Monday: By Appointment Only
Tuesday: By Appointment Only
Wednesday: By Appointment Only
Thursday: By Appointment Only
Friday: By Appointment Only
Saturday: By Appointment Only
Sunday: By Appointment Only

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