From May 2018, the MOT has changed. It used to be a visual only inspection i.e. (Can the tester see a dpf on the vehicle or does it look like it's had a dpf delete pipe fitted?) However, the new test does a soot particle check and based on the stated emissions for that vehicle, if you are blowing too much soot, the vehicle will fail the test.
I don't have a ton of information on how long the replacement DPF should last, though. I have heard that this newer DPF is somehow a little better than the original one your car shipped with, so theoretically you should be fine for a long time. VW's replacement DPF is supposed to be an improvement over the original part.
VW DPF Regen info I attached the link to a pdf file. This came from VW and is part of the Engine Management System dealing with Regenerations / DPF issues. No where does it talk about Oil Ash Volume, only Soot Load. I've asked my dealer contact to try and dig a little deeper to see if there is any literature that specifically mentions "oil ash".Failed regeneration. Over the years the common problems with Volkswagen DPF's we have seen have been due to failed regeneration. Even after cleaning, a lot of VW cars then "fail" to regenerate as before, we have found that the temperature sensors in these cars suffer from carbon build up and eventually stop sending the correct temperature #1 · Apr 6, 2015 Hi All, I have a 2006 V10. As advised by some of you on here I want to make sure I have the correct engine oil and so want to replace it asap. However having jut done a search on the Comma oil website they have 2 potential variants of my car. One with and one without DPF My question is how can I find out if I have DPF or not? The DPF's I have seen have been a monolithic honeycomb that the exhaust must pass through and the soot gets caught on. As the efficiency declines the ECM adds additional fuel to get the internal temps above 700-800C to burn off the soot and turn it into ash. Where does it store the ash and with that in mind what would be the life span of a DPF? The following are several of the most common causes of DTC P2002. Air leak upstream of DPF. Extremely dirty air filter. Use of high-sulfur fuel. Constant, low-speed operation. Clogged or damaged DPF. Fault emissions system intelligent devices. Compromised ECM. Faulty back-pressure sensor. iUYe.