On different hybrid electric vehicle technologies 

The petitioner states that important details for differentiating between hybrid electric vehicle technologies are not or are not sufficiently weighted in EU regulations. For example, the only differentiation between externally-chargeable (OVC-HEV) and not externally-chargeable (NOVC-HEV) is lacking – an effective and comprehensible differentiation, as the fact that a hybrid vehicle can generate and store electricity while being driven is not taken sufficiently into account.