Particulate filter ash loading prediction method and vehicle with same

A vehicle, comprising:

• an internal combustion engine;
• a particulate filter (PF) connected to said internal combustion engine;
• a controller operatively connected to said internal combustion engine and to said diesel particulate filter, said controller being configured to execute the steps of a method, the method including the steps of:
• regenerating the PF using a first soot loading prediction model or a second soot loading prediction model;
• determining whether the regeneration of the PF was initiated by the first soot loading prediction model or the second soot loading prediction model;
• incrementing a first counter associated with said first soot loading prediction model or a second counter associated with said second soot loading prediction model, dependent on said determining step;
• comparing a ratio of said first counter and said second counter;
• and
• establishing whether said PF requires servicing, dependent on said ratio.