The diesel particulate filter (DPF) has continued to improve over its 15-year existence. So have other components of aftertreatment systems (ATS) that help send cleaner exhaust through the DPF.

Millions of diesel drivers are sitting on a component most have never thought about, and getting it wrong can fail an MOT, ...

This story appears in the May 27 print edition of Transport Topics. Retrofits of diesel particulate filters onto older vehicles that never had them will take a jump in 2014, when California’s rule ...

The role of a DPF, or diesel particulate filter, in a modern automobile is an important one. As the name implies, the DPF works to filter out particulate matter in diesel vehicles — more specifically, ...