Yes, you just have to drive a reasonable distance at a reasonable speed and you don't get the problem. The DPF 'regenerates' from time to time to keep itself clean. The problem comes with people driving short distances at low speed.

Not sure what happened in the case of the old couple when they bought the Merc GLB, but it sounds like the salesperson should have at least tried to steer them away from diesel given their usage. Not sure how many would actually do that though?.

Quite a number of years ago (probably mid noughties), when it was time to change my wife's Motability car, I was in a small independent local Fiat dealership looking at the Doblo (might have been the Idea). The owner/salesman asked about our usage and suggested the 1.4 n/a petrol would be a better choice for us than the 1.3 turbo diesel I had in mind.

Yes, you just have to drive a reasonable distance at a reasonable speed and you don't get the problem. The DPF 'regenerates' from time to time to keep itself clean. The problem comes with people driving short distances at low speed.

It's also necessary to use the correct oil - DPF-equipped cars need "low SAPS" oil which is part of the ACEA specification - using high or mid-SAPS will rapidly fill up the DPF with ash, that can't be burnt off by regeneration/.

Yes, you just have to drive a reasonable distance at a reasonable speed and you don't get the problem. The DPF 'regenerates' from time to time to keep itself clean. The problem comes with people driving short distances at low speed.

The Welsh GOV are debating introducing a blanket on all 30mph speed limits reducing them to 20mph across the whole of Wales. I cannot see how this is going to help the diesel drivers let alone anyone else wishing to drive here. I would not be surprised if something similar was to be adopted elsewhere in the UK in the future. If this does happen it would appear that ICE cars are doomed sooner than might be imagined.