Thanks for all your help, dealer has done a check & it's been the DPF regenerating. Not an issue I'd come across before, but looking at various websites, I've nowt to worry about.
However, with the recent warm weather, found that the aircon ain't working.
First diagnosis was a leaking hose on system, that was changed then it was pressure tested & found that the condenser was faulty. After that was changed, all well for a couple of days then what sounded like the aircon compressor started making one hell of a racket, so not wanting to cause further damage, potentially, back it went for another inspection. Fortunately, not the compressor, turned out to be part of a heat shield around the turbo was split & it was just conicidental that when the aircon comp was running, enough vibration on the engine to start the clattering of the heat shield. A quick dab with the mig welder & all silent again. The technician told me that this is a fault known to be developing & a recall will be on the cards soon to fit a re-designed part. All staff unfailingly helpful & accommodating with provision of a courtesy car f.o.c every time & parts supply was swift, as was fitting. However, in the 7 months I've owned the Scooby, it's had more trips to a dealer than 7 years of Skoda Yeti ownership & 3 years of Octavia ownership, not quite what I was expecting from a brand renowned for it's reliability, one of the main reasons I went into Subaru ownership & believe me, I did a lot of research as this will probably last me ten years or more. Dealer is 55 miles away so it's costing me fuel every trip, but fortunately, I have family close by so I can always grab a coffee with them.
Any others had similar problems detailed above, I'd be very pleased to hear? If I have any further problems, I'll be looking to get the car replaced, as I paid the deposit on a credit card with the associated protection.
Cheers the noo from a very sunny Scottish Borders.