 This company never issued stocks publicly, building its own line of automobiles independently from Benz & Cie., which was located in Mannheim.The "Benz Sons" automobiles were of good quality and became popular in London as taxis.In 1912, Karl Benz liquidated all of his shares in Benz Sons and left the family-held company in Ladenburg to Eugen and Richard, but he remained as a director of Benz & Cie.

During a birthday celebration for him in his home town of Karlsruhe on 25 November 1914, the seventy-year-old Karl Benz was awarded an honorary doctorate by his alma mater, the "Karlsruhe University", thereby becoming—Dr.