Mokka 2015 – Cruise control with pitfalls

I drive an Opel Mokka BJ 2015. A cruise control is installed in the vehicle. However, it has a peculiarity which I do not know from any other Opel or car (had previously Nissan, Mercedes and several Landrover). It can only be activated from a speed of 40 km/h. This does not correspond to the information in the vehicle documents (30 km/h) nor is it useful in any form. Where are there in Germany 40 km/h speed limits?? Especially in the Flensburg points sensitive area around 30 km/h the activation would be recommended. On demand with the dealer, I have experienced this is only with the 2015 models so (obviously in Korea – before the production transfer to Spain) built mokka. A request to the manufacturer brought only the very brazenest information – info “Adjustments in the series can be accepted by the customer (if you have accepted as a customer in the small print!) and what in the vehicle book does not have to correspond to the actual parameters.”