The sound emission of the vehicle or replacement silencing system under typical on-road driving conditions, which are different from those under which the type-approval test set out in Annex II and Annex VII was carried out, shall not deviate from the test result in a significant manner.
la cylindrée ne dépasse pas 660 cm3 et le rapport entre la puissance et la masse calculé en utilisant la masse en charge maximale techniquement admissible ne dépasse pas 35;