Auto Repair Popov in Grantville serves foreign and domestic vehicles from a single bay at 5841 Mission Gorge Road, Suite B, San Diego 92120. Owner Tzvetan Popov founded the shop in 2004 and has run the diagnostic bench himself for two decades, building a service list that covers brake and suspension rebuilds, AC recharges, timing-belt replacements, and charging-system diagnostics. Transmission fluid exchanges, engine overhauls, and fuel-injection cleaning are handled in-house, along with carbon-deposit removal on gasoline direct-injection valve trains — a procedure that addresses the intake buildup plaguing GDI engines past 40,000 miles. The bay sits in the same Mission Gorge Road commercial block as Smart Auto Sports - Collision Repair & Vinyl Wraps, which takes body and paint referrals that fall outside Popov's mechanical scope. Popov also services hybrid drivetrains and select battery-electric systems, a capability that most independent shops on this corridor do not advertise. Engine diagnostics start with a complimentary OBD-II scan, and Popov reads live data streams rather than relying on stored codes alone. Mission Gorge Road funnels commuter and commercial traffic between Grantville's auto-service cluster and Mission Trails Regional Park, putting the shop on a corridor that produces heavy brake and suspension wear from stop-and-go grades. Coolant flushes, brake-fluid exchanges, and full-synthetic San Diego oil change appointments round out the preventive-maintenance menu, keeping older high-mileage vehicles compliant with California emissions standards. A customer shuttle runs between the shop and nearby stops so drivers dropping vehicles for multi-hour jobs are not stranded in the 92120 ZIP. Tire rotations and wheel balancing are handled on the same lift cycle as oil services, and Evans Tire in Grantville supplies replacement rubber when tread-depth gauges flag a set below 3/32-inch. The shop runs alignment-adjacent suspension geometry checks using digital angle gauges to confirm camber and caster readings after strut or control-arm replacements, the kind of best mechanic San Diego verification step that distinguishes thorough rebuilds from quick-swap parts replacements.