In the cases referred to in Article 24(5) when the quality level appears unsatisfactory, the following procedure shall apply:

An engine is taken from the series and subjected to the test described in Part B of Annex I. Test engines shall have been run in, partially or completely, in accordance with the manufacturer’s specifications. If the specific exhaust emissions of the engine taken from the series exceed the limit values in accordance with Part B of Annex I, the manufacturer may ask for measurements to be done on a sample of engines taken from the series and including the engine originally taken. To ensure the conformity of the sample of engines with the requirements of this Directive, the statistical method described in Annex VII shall be applied.