The Haldex VAQ interval used to be 30k/3 years, however is now 20k/2 years. I believe it is the same for Haldex AWD. DSG wise, all of the gearboxes are 40k intervals, with the exception of the DQ200 (n/a) and DQ381, which is 80k. That said, I'm about to do mine at 39k. The haldex wants the fluid doing, and the gauze cleaned out. Some places do it, some don't. The DSG wants the fluid doing, and the filter replaced (Skoda usually don't do the filter, but you want it done). 2019 is the GPF year for all cars. You won't see any difference, unless you're planning on changing the exhaust system for more power (as @travs and I have found out). I've driven a GTI with the DQ250 and my vRS has the DQ381. I think the 381 is the vastly superior box, however I do agree with @nicknorman on the whole. Mine has a TCU tune so is a non issue now, however I did used to find (when accelerating very slowly up a hill) that it would shift into say, 3rd, at 1600rpm and then struggle to go anywhere. That's now fixed, however I can't say if the Superb is any better/worse. That said, it's a very minor issue and certainly nothing you'll really notice if someone doesn't point it out to you IMO. For the Superb I'd say the 381 is the better box - having that 7th ratio keeps it nice and quiet. You're at the top end of torque on the 250, so if you're thinking about tuning or anything like that, then the 381 is the box.