1. EU motorcycle OBD-II, following Euro 5 revision process Status update and overview
OBD-II requirements are included in 168/2013, 44/2014 and 134/2014
Euro 5 revision process of 44/2014 and 134/2014 is CLOSED and resulted in amendment 2018/295 (published)
Euro 5 revision process of 168/2013 is in final stage. It is estimated that discussion with close before end of 2018; publication early 2019
The Euro 5 revision process introduced a phased introduction of requirements. Principle OBD-II is mandatory from 2020 (new types), whilst some additional OBD-II requirements become mandatory from 2024

2. OBD-II timing; Overview of requirements
PHASE A: 2020/2021 (new type / existing type)
OBD-I requirements
+ Misfire
+ Oxygen sensor (+ other elements in Table 12-1 of 44/2014-Annex XII)
with OTL1*
+ IUP data collection – no Ratio requirement
PHASE B: 2024/2025 (new type / existing type)
OBD-I + OBD-II phase A requirements
+ Catalyst monitoring*
with OTL2*
IUPR 0,1
* EC proposal, subject to formal adoption by European Parliament and Council and publication in the OJ