Generall Asked Questions
/01What is a DPF and why does it get blocked?
A Diesel Particulate Filter traps soot from exhaust gases to reduce emissions. Over time, this soot builds up — especially from short journeys, weak regeneration cycles, or poor fuel quality — eventually causing blockages.
/02Is DPF removal illegal?
Yes. Removing or tampering with a DPF is against UK law. Vehicles without a working DPF will fail the MOT, and drivers may face fines and voided insurance.
/03How do I know if my DPF needs cleaned?
Common symptoms include:
✔ DPF warning light
✔ Loss of power or limp mode
✔ Excess exhaust smoke
✔ Increased fuel consumption
✔ Strong exhaust smell
✔ Rough idling
If you notice any of these, book a diagnostic check ASAP.
/04Can I just drive the car hard to clean it (regeneration)?
Sometimes a forced regeneration helps, but once soot turns to ash, driving will not fix it. A professional clean is required to restore proper airflow and protect your engine.
/05How long does a DPF cleaning take?
Usually 2–3 hours, depending on how severe the blockage is. Some complex systems may take slightly long