I still don't understand the desire to buy a diesel unless you are doing more than 20k miles per year. The petrols are more characterful, not having to resort to artificially generated noise, and fit the marque better. Anyone who has one want to explain the reasoning?
I don't doubt that the various shenanigans that are done to reduce diesel omissions do bring the measured pollutants down to reasonable levels but the particulates seem to get through the testing. Yes a DPF helps with that but how many vehicles have we seen on the roads dumping clouds of black s**t out of the exhaust when they put the power on. This includes cars that were fitted with a DPF from new, but have perhaps had it bypassed as a cheaper fix than replacing it. People are cheap and if there is a way around something that is cheaper than the right fix they will do it and undo the good work done to keep the omissions down.
I still think that diesel has limited shelf life and will be replaced by full electric in the next 10 years. Petrol, and petrol hybrid, will continue for a while longer to cope with those situations where charging may be an issue.