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• DPFs: What are they and why do they go wrong? (FAQs)
  At 75%, regeneration is still possible with the use of the VAS tester. Only when the loading is above 95%, is it necessary to replace the DPF unit. Operating Status System Response 45% DPF Load Level 1 - Normal Regeneration 50% DPF Load Level 2 - Regeneration at maximum exhaust temperatures 55% DPF Load DPF lamp Regeneration from 60 km/h onwards ("See operating manual") 75% DPF Load DPF, SYS and MI lamp Torque limitation, EGR deactivation, Regeneration via VAG tester only 95% DPF Load Replace the DPF Unit The Warranty department has confirmed that if there is no fault on the vehicle and DPF regeneration has been unsuccessful due to the customers driving style and the customers failure to comply with the instructions in the handbook, DPF replacement will not be paid for by warranty.
• RUNNING IN A DIESEL: What's the best way to run-in a diesel engine? (FAQs)
  .  The latest bain of a diesel driver's life is the Diesel Particulate Filter. On passive cycle the DPF will require the car to regularly be driven significant distances at 2,000rpm plus for the DPF to get hot enough to regenerate and burn off the particulates in it. DPFs also have an 'active' cycle where additinal fuel is injected into the combustion chambers to creater hotter than normal exhaust gases to burn off particulates in the DPF.
• ADBLUE: What is AdBlue and What do I need to know about it? (FAQs)
  There is also apprehension about the calcifying/corrosive nature of the chemical (ph9) in terms of its effect on the longevity of system components. The exhaust system of a Euro 6 diesel vehicle with all its DPF components, its SCR reduction components, could have up to 12 sensors on just the exhaust system alone. It is far from ideal. Many manifold in head diesel engines such as Mazda's Skyactiv 1.5 and 2.2 litre diesels and VAG's and Renault's 1.6 litre diesels met EU6 without the need for AdBlue.
• DIESEL v PETROL: Which is better for me?   (FAQs)
  EGR failures: £300 - £600  Manifold swirl flap failures: £300 + Injection pump failures £1,000 - £2,000 Injector failures £250 - £1,500 Diesel particulate filter failures £500 - £1,500. It was always illegal to remove a DPF, and from February 2014 has been tested for as part of the MoT.  Glowplug failures up to £1,000 if they come out. Up to £3,000 if they snap and the head has to be removed to extract them.