Yeah,
Gregozedobe you nailed it, the gentle driving doesn't lead to DPF blocking, abrupt driving and unnecessary accelerating in the city does. Hence my 23 Y old daughter drives the Touareg like old grandma and there is no problem with the DPF however I take it once a month to blow out the cobwebs out of the exhaust, making sure that the vanes in the turbo don't seize.