Stephen Maugeri opened Steve's Beemer & Benz on Garnet Ave in Point Loma in 1986 and moved the operation to Banks St near the Midway District in 2010, keeping the same BMW, Mercedes-Benz, and Sprinter specialization through nearly four decades. Factory check engine light diagnostic systems for both marques let the shop read fault codes on everything from E30-era CAN-precursor wiring to current iDrive and MBUX platforms, generating engine-internal findings that route cylinder heads to Cylinder Head Services for valve and seat machining. Bilingual English-Spanish service covers the full ownership cycle: A/B maintenance intervals for Mercedes, Inspection I/II schedules for BMW, and commercial fleet service for Sprinter vans. The BBB A+-rated shop carries the diagnostic and tooling depth to handle cooling-system overhauls, transmission rebuilds, and suspension replacement in-house, with post-service California emissions testing handled at Smog Oasis nearby. Sprinter-specific work—injector coding, DPF regeneration cycles, and AdBlue system diagnostics—adds a commercial-vehicle layer that most BMW/Mercedes independents on the Hancock corridor don't carry.