When should you arrange for your car to be inspected in a garage?

The combination of answers you've chosen is correct because each situation indicates a potential safety issue that needs to be addressed by a professional mechanic.

1. A permanent noise when braking can suggest brake wear or malfunction, which poses a significant safety risk when driving.
2. An airbag indicator light that does not turn off indicates a fault in the airbag system, therefore affecting the safety features in case of an accident.
3. The need to continuously counter-steer while driving straight suggests an alignment or suspension issue, which can lead to loss of control of the vehicle.

According to German traffic regulations, vehicle safety must be prioritized to prevent accidents and ensure the safety of the driver, passengers, and other road users. Regular inspections and maintenance are required to identify and rectify such problems. Recognizing all the scenarios outlined in the options is essential for maintaining vehicle safety.