Article 8(2) of Regulation (EU) 2018/956 obliges the Commission to verify the quality of the data reported by Member States and by manufacturers of heavy-duty vehicles pursuant to Articles 4 and 5 of that Regulation. It also obliges the Commission to correct discrepancies found during such verification.

The number of heavy-duty vehicles of which the quality of the data is to be verified should be sufficiently high for the Commission to detect possible discrepancies in the reported data and to establish whether the nature of such discrepancies is systematic.

In order to ensure the integrity of the reporting process, the verification should consist of checks of the data reported by manufacturers against the engine type-approval certificate and the manufacturer’s records file.

Manufacturers should be given the opportunity to correct the data in the case the Commission finds discrepancies. Where those discrepancies are of a systematic nature, manufacturers should provide corrected data for all the vehicles registered in the reporting period concerned.

In order to ensure the correctness of the data, where the manufacturers have not provided the Commission with corrected data, the Commission should be able to correct those data itself. In order to ensure that the manufacturers provide the Commission with correct data, where the discrepancies found are of a systematic nature, the Commission should correct those data by applying a correction factor to CO₂ emissions of all heavy-duty vehicles registered in the reporting period concerned.

For transparency purposes, it should be clear from the data included in the Central Register for data on heavy-duty vehicles whether they have been corrected by the Commission.

The measures provided for in this Regulation are in accordance with the opinion of the Climate Change Committee,