I have just bought a new Isuzu D-Max that has a diesel particulate filter which requires regeneration occasionally.
On a drive back from the West Country to Essex, it regenerated twice, but I think it depends on traffic conditions and dusty environments.
There is nothing to fear about this IMO as the engine senses the build up of particles in the filter (there is a screen display which shows this) and then automatically starts the regeneration process.
The regeneration raises the engine temperature so the exhaust can smell a bit hot, but we have not had to drive over 30 mph for a set time. In fact we have turned the engine off during regen and the regen process just starts again where it left off when turned back on.
So far there have been no problems at all, and it has not had any impact on our use of the vehicle either, though we've only had it for three weeks so far.
The new Isuzu has a five year warranty so I am not too worried about the complexities involved.
Hope this helps.