The maximum design speed of a moped exceeds 25 km/h due to a prohibited technical modification. What are the consequences for me if I ride such a moped on public roads?

You answered correctly. If you ride a moped on public roads that has been illegally modified to go faster than 25 km/h, you are committing both a criminal offence and an administrative offence. The criminal offence is driving without the required license, since the vehicle is now technically classified as a higher powered vehicle requiring a proper driving license. The administrative offence is riding without the proper authorization or registration for the modified moped. Even if you drive slower than 25 km/h, the technical capability determines the legal requirements and consequences—not your actual speed. This rule exists to ensure road safety and proper licensing. For similar questions, always consider both the technical specification of the vehicle and the legal status, not just your driving behavior.