I would definitely keep the car. Selling a car after 2 years from new is not financially the best thing to do, as you're shouldering the steepest part of the depreciation curve. That, on top of a dealer profit on the next car if you buy used, or further heavy depreciation on new, you'll be thousands out of pocket for little reason other than a probable over-hyped fear of diesel. As GB says, keep it well serviced, increase the frequency of oil changes ( your stated useage is bad for any car petrol or diesel) , try and give it a good run every couple of weeks of 30 or 40 miles. I don't think you'll have any problems.

If you sell a 2 year old car you will loose ££££'s and the replacement will depreciate instantly.

If you have a DPF issue it will cost about £1000 to £1500 to replace which might sound a lot but its way less than the depreciation.

I say keep it and buy an appropriate car when its really time to swap and in the meantime keep your fingers crossed.

If the Hyundai is anything like our Kia it will do a regen every 250 to 300 miles and with a bit of practice and a sensitive ear they are easy to spot. Try and avoid stopping the engine part way through a regen, 2 or 3 failed ones will put on the dash light and then it can be dealer time unless you follow the instructions in the handbook.

Thank you all for the advice. Its clear that I can keep my current car for now and not worry too much about DPF. However I need to be a bit careful and ensure that the DPF regen happens reguarly. Also I'll get a bluetooth dongle and some app (Torque) to check the signals from my phone.