ANNEX I U.K. Definition of engine sub-categories referred to in Article 4

Table I-4: Sub-categories of engine category NRS defined in point (4) of Article 4(1)

Category	Ignition type	Speed operation	Power range (kW)	Swept volume (cm3)	Sub-category	Reference power
NRS	SI	variable ≥ 3 600 rpm; or constant	0 < P < 19	80 ≤ SV < 225	NRS-vr-1a	Maximum net power
				SV ≥ 225	NRS-vr-1b
		variable < 3 600 rpm		80 ≤ SV < 225	NRS-vi-1a
				SV ≥ 225	NRS-vi-1b
		variable or constant	19 ≤ P < 30	SV ≤ 1 000	NRS-v-2a	Maximum net power
				SV > 1 000	NRS-v-2b
			30 ≤ P < 56	any	NRS-v-3	Maximum net power