New (ish) T6 owner here (150PS Highline Camper Conversion). I had a Carista unit arrive yesterday which I plugged in and connected to my iPad. I did what seems to be the usual mods of auto lock, tear drop wipe, dial sweep and gallons to fill up. I subsequently decide to bin the dial sweep (pointless!) and gallons to fill (inaccurate and showing two gallons with the trip meter reading 177 miles - i wish!). For auto lock, having read that some have problems with the Carista Option A, I selected B and went for a drive. It worked and the locks kicked in at 10 MPH or thereabouts so I'm well chuffed as it's feature that I'm used to (and missed). All in all, I'm well impressed with Carista, particularly for only £15.99 including the months free 'pro access'. I also plugged it into my Audi Q5 and it seems to work perfectly but just about the only thing that hadn't been initiated on that already was the 'dial sweep' which, as mentioned above, I'm not bothered with. That said, I reckon that auto lock and tear drop wipe on the T6 were easily worth the £16 that I paid for the Carista unit and one month access to the 'pro features'. The only issue that I did have was that I had to add some funds to my Apple account in order to allow them to set up a 'standing order' to pay Carista for access after the 1st month but I simply added the required £32, initiated the Carista free trial, cancelled the 'standing order' and asked Apple for a refund on the £32 (which happened earlier today). However, if I ever need the Carista pro features again, I'll happily cough up the required £10 for a weeks pass as I now know it works.