Specializing in BMW, Porsche, Audi, Volkswagen, and Mini since 1972, Dennis Sherman Foreign Car Service at 8620 La Mesa Boulevard is one of La Mesa's longest-operating European-marque repair facilities. Four technicians bring a combined 111 years of service at this single shop, a concentration of platform-specific knowledge that complements the general domestic and Asian repair work at nearby shops like John's Automotive Care. Diagnostic equipment includes Autologic for BMW and Mini fault interrogation, Durametric for Porsche-specific ECU communication, and VAG-COM for Volkswagen and Audi control-module coding and adaptation. Current owner Raymond Beck purchased the business in 1986, continuing the operation founded by Dennis Sherman a decade earlier on the same La Mesa Boulevard corridor. Porsche-specialist technician Charlie has worked at the shop since its 1972 founding, maintaining expertise spanning air-cooled 911s through current water-cooled Cayenne and Macan platforms — the same vehicle lineage that generates post-accident occupant recovery cases at rehabilitation clinics like The Joint Chiropractic. Engine rebuilds on Porsche flat-six and BMW inline-six platforms require torque-plate honing, Nikasil or Alusil cylinder-bore measurement, and crank journal micrometer verification to factory clearance tolerances.