Sofiane Zemmouche (Sof)
Owner & Master Diagnostic Specialist
Independent Excellence Over Dealership Costs
Founded by Sofiane Zemmouche, Tri-Valley Automotive was established to give Dublin car owners a superior alternative to high dealership repair costs and impersonal service centers.
With over 18 years of specialized experience in European, Japanese, and Domestic vehicles, Sofiane has built a reputation on accurate computer diagnostics, honest recommendations, and direct owner accountability. When you bring your vehicle to Tri-Valley Automotive, you speak directly with the experts working on your car.
Our Mission
To deliver unmatched mechanical accuracy, transparent communication, and long-term vehicle dependability to every driver in the Tri-Valley community without dealership markup.
Our Vision
To remain Dublin, CA's premier independent automotive service hub, continuously adopting advanced OEM diagnostic systems and modern green maintenance standards while retaining our personalized owner-client relationship.
Core Pillars of Tri-Valley Automotive
Every vehicle that enters our Dublin facility receives equal precision, dedication, and care.
Honesty & Transparency
No unnecessary upsells or hidden fees. We explain every diagnosis with digital inspection reports before doing any work.
OEM Factory Precision
We utilize dealer-level diagnostic scanners and manufacturer-approved OEM fluids and replacement parts.
Direct Owner Accountability
Owner Sofiane Zemmouche inspects every major job personally to guarantee safety, reliability, and precision.
Fast Turnaround
We respect your time. Most routine maintenance and standard diagnostics are completed same-day.