We are just under 1000 miles into owning our SD and have had the dreaded regenerate particulate filter message appear 3 times. The first occasion was after 600 miles and it didn't give us chance to do the standard above 2000rpm procedure before the vehicle went into limp mode resulting in a visit back to the OPC for 5 days and extensive testing. Since then it has appeared a further 2 times and i have managed to clear it by driving above 2000rpm for 15 mins. The OPC advised that it is because the vehicle is predominantly covering 3/4 mile journeys. Surely a car should be able to cover any type of journey without throwing out an error. I have used the vehicle to commute in (approx 100 mile round trip) but one week later the message has flagged up again. Anyone else suffered this issue, very annoying and not impressed.
If your average journey is 3-4 miles, look at both the water and oil temperature readings when you reach your destination. Almost certainly they will not have reached the "normal" levels of 90 degrees. For short journeys you really need a light car with a small petrol engine not a 2 ton SUV with a diesel.
If your average journey is 3/4 miles then walking is a realistic alternative.
I used to average 15k miles per year in my Cayenne and it's 10k a year in the Macan which is the sort of mileage you really need to be doing to make diesel the right choice. Unfortunately there are very few (if any) car salesmen who will ask you what use do you intend to do with the vehicle.