I do indeed (when my brother-in-law isn’t swanning off in it on holiday!).
@glos-guy I really don’t think you would have any problems.
My X6 is mainly used as a ‘Sunday best’ type of car as I use the Grenadier most of the time.
As such the X6 gets periods of being parked up in a shed on the farm buts gets a run out a couple of times per month. Then occasionally down to Heathrow a couple of times per year. Plus occasionally when relatives borrow it to go on holiday. Averaging about 5k miles per year.
Never had any problems DPF/filter wise.
Dave