Most European member states have voluntarily developed car CO2 labels based on the EU energy label format. The document analyzes different label designs and whether ratings should be absolute or relative. It recommends harmonizing labels across countries to an absolute 7-band A-G scale for simplicity, but including best-in-class information for comparison. A composite label displaying both absolute ratings and best/worst in class is suggested. Examples of existing country labels are also presented.
The main argument in favour of an absolute label is that it is less confusing for consumers, and ensures that a car with a better rating would always be more fuel efficient. The main argument in favour of a relative approach is that they allow consumers to better compare similar types of cars, e.g. within car classes, as the relative approach can provide a wider range of categorisations for similar cars. Additionally, some stakeholders argued that basing a relative approach on a car’s weight meant that the approach taken for the label was consistent with that which is taken by the passenger car CO2 Regulation, which is also weight-based.
Note: these are for information only – I do not intend to talk through these slides unless someone asks a specific question