Particulate filter ash loading prediction method and vehicle with same

A particulate filter ash loading prediction method, including the steps of: regenerating the particulate filter (20) using a first soot loading prediction model or a second soot loading prediction model; determining whether the regeneration of the particulate filter (20) was initiated by the first soot loading prediction model or the second soot loading prediction model; incrementing a first counter associated with the first soot loading prediction model or a second counter associated with the second soot loading prediction model, dependent on the determining step; comparing a ratio of the first counter and the second counter; and establishing whether the particulate filter (20) requires servicing, dependent on the ratio.