Would an electronic format-only of the label and product information sheet be considered to be compliant?

That depends. Article 7 does not refer to any specific media support for the label, thus a label in electronic format appears to be acceptable if the remaining vehicle information is provided in the same way.

_{Disclaimer: Please note that the European Commission cannot provide a legally binding interpretation of the EU legislation, as this is the sole competence of the European Court of Justice. Any remarks from the European Commission services are without prejudice to the position the Commission might take should related cases arise in a procedure before the Court of Justice.}