"All vehicles registered after 01.01.2011 had to be Euro5 and have a DPF by law. Prior to this date it was a little hit and miss. Some had them, some didn't."
Are you sure? I can only find references to them not being mandatory, e.g.
While no jurisdiction has explicitly made filters mandatory, the increasingly stringent emissions regulations that engine manufactures must meet mean that eventually all on-road diesel engines will be fitted with them. In the European Union, filters are expected to be necessary to meet Euro.VI heavy truck engine emissions regulations currently under discussion and planned for the 2012-2013 time frame.
en.wikipedia.org/wiki/Diesel_particulate_filter
I think a lot of the confusion comes from people (including the press) failing to understand the difference between Regulations and Laws.
Edited by Hamsafar on 11/05/2013 at 12:19
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