I could be wrong but I think BMW and Mercedes still make diesel engines. So maybe it's only impossible at a lower price point? Although the difference isn't that large.
Mercedes don't have an easy filter, but they do have some cars available with diesel engines, e.g. C-Class.
Diesel is now down to 9.5% of new cars sold in Europe (Q1 2025), less than full EVs ([2]).
[1] https://www.bmw.co.uk/en/all-models.html
[2] https://www.acea.auto/pc-registrations/new-car-registrations...
It does seem like diesel is trending lower, but it's not gone yet, regardless whether you think that is a good thing or not.
In any case, my point was this:
> it would be impossible to create diesel engines which would comply with enviromental standards
is false. Which it is.
Or multiple car manufacturers are still cheating, I guess we must consider the possibility.