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KÜS, short for Kraftfahrzeug-Überwachungsorganisation freier Kfz-Sachverständiger e.V., is a German independent vehicle inspection organization. Founded in 1967 by a group of free car inspectors, it operates as an eingetragener Verein (registered association) and maintains a nationwide network of inspection centers and certified inspectors. The organization positions itself as an alternative to other inspection bodies and emphasizes independence and quality in vehicle testing.

KÜS conducts Hauptuntersuchung (HU), the main periodic vehicle inspection required for roadworthiness, and Abgasuntersuchung (AU) where applicable. In addition to these core checks, it performs various technical inspections for passenger cars, motorcycles, and light commercial vehicles, in accordance with German regulations and guidelines from authorities such as the Kraftfahrt-Bundesamt (KBA) and the Straßenverkehrs-Ordnung (StVZO). The organization also provides training and examination for Prüfingenieure and offers quality assurance services to partner automotive workshops.

The network includes both standalone KÜS testing centers and partner workshop programs, enabling vehicle owners to obtain official inspections through a conventional, nationwide service structure. Beyond inspections, KÜS emphasizes consumer protection and road safety through standardized procedures, professional expertise, and ongoing staff education. It also pursues digital services, such as online appointment scheduling and access to inspection certificates, to streamline the inspection process for customers.

As one of Germany’s major vehicle inspection bodies, KÜS operates within the regulatory framework governing motor vehicle testing and contributes to compliance, safety, and environmental standards in the automotive sector.