From the end of 2011, Euro 5 came out ( in the UK) with DPF, & were available in 100, 125 140 & 155ps. All same engine , bar differences for RWD or FWD fitment. The ECU software only determines power level. Pre end 2011, DPF was an option, very rarely taken up on UK vans. Best to disregard 61 plate / 12 plate when deciding if Euro 4 or 5, as either can be on either plate, its based truly on build date. More common on European ones. In Australia you can find 2012 on sort of Euro 5 spec, ( same Euro 5 base engines) but without DPF’s!
Euro 4 came out mid 2006 & are found in 85, 100, 115, 140 & 200ps, most have no DPF, although it was an option. turbo & injectors differ on these MK7, (pre 2012 ) DPF equipped models.