Not aware of a need to replace the petrol filter, but besides the DPF regen I was also thinking of the $1200+ services to change the DSG oil.
hmm I've driven both (Mk6) and didn't find the higher torque as noticeable as you'd expect given the large difference between numbers - the main reason being that the diesel runs out of revs at ~5000rpm. And of course if you get Stage 1 on the 118TSI the torque jumps up to 320nm as well (and ~151kw).
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