The Diesel Particulate Filter (DPF) is best described as the “ticking time bomb” in most modern diesels. Similar to EGR problems, the DPF can become clogged up from city driving where the car does not get up to temperature.
The whole reason the Diesel Particulate Filter came along was to clean up the diesel car image (Euro 5 Emissions, 2009). Emissions from diesel cars are a big concern worldwide and thanks to the DPF technology, diesel cars are much cleaner.
DPF’s are great for the environment and so forth, however they are a right pain when they go wrong. DPF regeneration, repairs and new replacements are seriously expensive and can lead to some vehicles becoming scrapped.