Stuck in limp mode in Watford, Luton or Harrow? We clean your DPF on your driveway and clear the light, usually a clean, not a £1,000+ swap.
30 seconds — we'll call you straight back.
Your diesel particulate filter traps soot and burns it off on longer runs. Short, stop-start trips (the daily reality around NW London and the M25) stop that self-clean from finishing, so the filter blocks up.
The filter is filling. On some cars the dash says "Exhaust Filter" (Ford, Vauxhall) or "Anti Pollution Fault" (Peugeot, Citroën) instead: same system, same fix.
The engine is protecting itself from a badly blocked filter. We clear it at your driveway and restore full power.
If the car keeps trying and failing to regenerate, the soot load is past what driving can fix. It needs a professional clean.
We read the codes and check the filter's actual state, so you're never sold a clean you don't need.
No removal, no days off the road. The clean, done at your home or work, takes about an hour.
We road test, confirm the light is out and power is back, and cover the work with a 3-month warranty against re-blocking.



A blocked but undamaged filter: warning light, limp mode, sluggish power, failed regens. This is most cases we see, and it saves £1,000+ against a new DPF.
A cracked or melted filter, or an underlying fault (sensor, injector, EGR) that caused the blockage. The diagnostic finds this first, and we tell you straight rather than clean a filter that can't be saved.
Mobile, fixed-price and sorted in one visit: no garage, no waiting.
You approve the price before we start, and we'll beat any genuine like-for-like quote.
*Subject to driving conditions. Save £1,000+ against a replacement DPF: clean it, don't replace it. We'll beat any genuine like-for-like quote (the same on-car chemical clean, shown in a written quote).
Home, work or roadside. No garage visit, no waiting room, no days off the road.
The price is agreed before we start. No surprise costs, ever.
Diagnostic, clean and road test in a single visit while you get on with your day.
Cover against re-blocking, plus honest advice if a clean isn't the right fix.
Based in the Watford area, covering Hertfordshire, Bedfordshire, Buckinghamshire and North West London inside the M25. Same or next day, 8am–8pm, 7 days.
"Sy did a DPF clean on our Ford Kuga, very professional and explained everything. Great bloke, would definitely use again."
"Called at 9, the technician was with us by 10.30. Fully explained the process over the phone before arriving."
"Came down for a DPF clean on my Porsche and couldn't be happier. Absolutely fantastic from start to finish."
Not for long. A blocking DPF strangles power and can lead to damage that a clean can't fix. Early action is the cheap option.
Sometimes, if the light has only just come on and the car can still regenerate. Once limp mode hits or regens keep failing, driving won't clear it.
Often the same day, usually next day at the latest, anywhere in our Herts, Beds, Bucks and NW London patch.
Diagnostic from £120, full on-car clean from £280, fixed and agreed before we start. Cleaning saves £1,000+ against a replacement filter.
Free quote in 30 seconds, or call us 8am–8pm, 7 days. Same or next day across Herts, Beds, Bucks & NW London.
Get my free quoteOn engines past 120,000 miles, soot and ash sit deeper in the filter. Our 2-stage on-vehicle clean is a deeper DPF clean carried out at your driveway or work, with the engine carbon clean and full diagnostics included. We'll tell you from your reg whether your vehicle needs it — agreed up front, before anything is booked.