Regulation (EU) 2018/858 of the European Parliament and of the CouncilShow full title

4.3.1. A ‘version’ within a variant shall group the vehicles that have the following features in common: U.K.

(a)

the technically permissible maximum laden mass;

(b)

the ability or not to tow a trailer as follows:

(i)

an unbraked trailer;

(ii)

a trailer with an inertia (or overrun) braking system as defined in paragraph 2.12 of UN Regulation No 13;

(iii)

a trailer with a continuous or semi-continuous braking system as defined in paragraphs 2.9 and 2.10 of UN Regulation No 13;

(iv)

a trailer of category O₄ that results in a maximum mass of the combination not exceeding 44 tonnes;

(v)

a trailer of category O₄ that results in a maximum mass of the combination exceeding 44 tonnes;

(c)

the engine capacity;

(d)

the maximum engine power output;

(e)

the nature of the fuel (petrol, gas oil, LPG, bi-fuel or other);

(f)

drive-by sound level;

(g)

exhaust emission level (for example Euro IV, Euro V or other).