I believe OBD was mandated for all EU *petrol* cars since 1st Jan 2000,
with a 1 year extension for cars already in production at that time.
So, in theory a 2002 *built* car should be fine.  However, it may have
been manufactured before that point.

Also, I understand that OBD wasn't required for diesel cars until 2003
(existing) / 2004 (all).

(for petrol)
"8.1. Vehicles with positive-ignition engines

With effect from 1 January 2000 for new types and from 1 January 2001
for all types,
vehicles of category M1, except vehicles the maximum mass of which
exceeds 2 500
kg, and vehicles of category N1 class I, must be fitted with an on-board
diagnostic
(OBD) system for emission control in accordance with Annex XI."

(for diesel)
"8.2. Vehicles with compression-ignition engines

Vehicles of category M1, except
– vehicles designed to carry more than six occupants including the driver,
– vehicles whose maximum mass exceeds 2 500 kg,
from 1 January 2003 for new types and from 1 January 2004 for all types,
must be
fitted with an on-board diagnostic (OBD) system for emission control in
accordance
with Annex XI."

<http://ec.europa.eu/enterprise/automotive/pagesbackground/pollutant_emission/pol
lutant_emission.pdf>

D