how long does a dpf last? Although, it has been estimated that a Diesel Particulate Filter should last upwards of 70,000 miles from new, many have proved to last a lot longer when properly maintained. In general, a DPF filter should last for approximately 100,000 miles before a need for a replacement arises. However, this number can vary significantly based on how well-maintained the DPF is. A poorly maintained DPF may last a lot less than the specified number, while a regularly-maintained one may even reach 150,000 miles before needing a ewynTR.