Article 13f 2.

the procedure shall respect the right to good administration, and in particular the right to be heard and the right to have access to the file, while respecting the legitimate interests of confidentiality and of commercial secrets;

in calculating the appropriate administrative fines, the Commission shall be guided by the principles of effectiveness, proportionality and dissuasiveness, taking into consideration, where relevant, the seriousness and effects of the deviation or delay, the number of heavy-duty vehicles concerned by the deviating or delayed data, the good faith of the manufacturer, the degree of diligence and cooperation of the manufacturer, the repetition, frequency and duration of the deviation or delay, as well as any prior penalties imposed on the same manufacturer;

administrative fines shall be collected without undue delay by setting deadlines for payment and by including, as appropriate, the possibility of splitting payments of those fines into several instalments and phases.