An assessment is required following modifications to your vehicle. When must this be performed?

In Germany, when modifications are made to a vehicle, it is crucial to have an assessment performed promptly after those modifications. This requirement is grounded in ensuring that any changes made do not compromise the safety or compliance of the vehicle with traffic regulations. The first answer choice reflects the urgency of maintaining vehicle safety on the road.

While the other options suggest waiting until the next inspection or only acting when required by authorities, these approaches could potentially overlook critical safety checks required immediately after modifications. Prompt assessment helps ensure that the vehicle continues to meet necessary standards and regulations, thereby protecting both the driver and other road users. This proactive approach is in alignment with German traffic laws, which emphasize the importance of vehicle compliance and safety on the road.