• Registration certificate Part I (formerly vehicle registration document),

• Registration certificate Part II (formerly vehicle registration document),

• in the case of companies, additional business registration or excerpt from the commercial register,

• Identity card or passport with registration certificate from the residents' registration office or (for foreign citizens) foreign identity card and registration certificate from the residents' registration office.

If you instruct a third party to register the change, they will need a written power of attorney from you. In addition, he must present your identity document (in copy) to the licensing authority. He himself must have the identity document that applies to him with him in order to identify himself.

In addition, in case of technical changes:

• where applicable, the opinion of an officially recognised expert for motor vehicle traffic or a technical service or a confirmation of acceptance by a test engineer from an officially recognised monitoring organisation,

• where applicable, type approval of the parts manufacturer,

• proof of the main inspection,

• in the event of a change in the type of vehicle, a new electronic insurance confirmation is also required.