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2007 2.0TDI - Seat leon - IJJ

I want buy Seat Leon 2.0TDI auto I like to know if it has a dpf

2007 2.0TDI - Seat leon - Bromptonaut

2007 implies Euro 4 so a period when DPF was not mandatory but may have been fitted either to meet/exceed Euro 4 or in anticipation of Euro 5.

Do you know the type/model number of the engine?

A DPF is a fairly conspicuous item, it should be easily located by following the system from the exhaust manifold towards the tailpipe.