Division 2.3.2.1 F1

The interpolation method shall only be used if:

1. (a)

   The difference in CO₂ over the applicable cycle resulting from step 9 of Table A7/1 of Sub-Annex 7 between test vehicles L and H is between a minimum of 5 g/km and a maximum defined in paragraph 2.3.2.2.;

2. (b)

   for all applicable phase values the CO₂ values resulting of step 9 of Table A7/1 of Sub-Annex 7 of vehicle H are higher than those of vehicle L.

If these requirements are not met, tests can be declared void and repeated in agreement with the approval authority.