I recently got the Carly app and did some coding and love it.
I went into the parameters and looked at the DPF readings and there was one that showed the remaining life of the DPF. Mine showed 167500~ km left (~105,000 miles).
Does anyone know if this is somewhat accurate? That be great to know i dont have to worry about this for a while.

The app also shows the number of re generations and miles since last one and so on, its pretty cool. You can also force a re generation with the app.