S5 vacuum cleaners are manufactured at Miele's Bielefeld factory in Germany where every effort is made to embrace the company's 107-year motto of Immer Besser or Forever Better. Endurance testing in custom-built laboratories forms an intrinsic part of quality assurance on all Miele vacuum cleaners. Before any production process begins, all components are put through rigorous tests and subjected to enormous strain' stress that exceeds typical residential household use. In fact, every unit is put through a final quality test, not just one in every hundred or two per production run, ensuring that your home is not a testing ground. Only when all components, electronics and floor tools have successfully passed each critical exam will the Miele brand name be bestowed on them.