Experience with CARexpert?

Does anyone here have any experience with or information about the expert firm CARexpert? Are anyone clear about the ownership relationships here? The Internet site www.carexpert.de reveals: Was founded in 1994 by insurance companies. As reference customers there are parts of the Allianz family (Ergo group and others), cooperatives (RV + Kravag) as well as various savings bank insurers listed. Are all these companies also partial owners? Does at any rate seem to be a quite obviously working for insurance companies and d amit not to be an independent expert GmbH. Useful information also via PN. I will then publish it anonymously.