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DPF Cleaning at Halfords Autocentres

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Diesel Particulate Filters (DPF) were developed to meet ongoing changes in emissions regulations and particulate filters in diesel car exhausts are now as common as catalytic converters on petrol cars

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If you own a diesel car then chances are you have a Diesel Particulate Filter (DPF). Any diesel engine can be susceptible to soot build-up, especially those mainly driven around town or on short or low speed journeys. DPFs are designed to remove this soot as you drive, but over time they can stop working.

To avoid expensive repair bills and to keep your car running smoothly, we recommend regular DPF cleaning.

DPFs were developed to meet ongoing changes in emissions regulations, and are now fitted to almost all modern diesel vehicles. This relatively new technology has proven to be very successful in reducing emissions, however sometimes things can go wrong.

Read on to find out how DPFs work, and what to do if problems arise.


How does a DPF work?

As you drive, harmful exhaust soot starts to build up on the walls of your DPF filter, reducing performance and fuel efficiency. To keep the system clean, a process called 'regeneration' is used. This is when the exhaust temperature rises to 600°C and burns off the soot, keeping your engine free of harmful chemicals.
There are many factors that can stop this regeneration process from working effectively, such as the type of fuel and oil used, driving style and vehicle age and mileage.


Do I need DPF cleaning?

If you're experiencing the following symptoms your DPF may need cleaning:

  • The DPF warning symbol has appeared on your car's dashboard
  • Loss of power
  • The automatic stop-start system isn't working
  • Poor fuel economy
  • Cooling fans run more than normal

A new DPF system can cost as much as £3,000 at a main dealer, but in most cases, using a DPF cleaning product can rectify the problem. So, if you're experiencing any of these symptoms, it's important to get it checked out by a qualified technician as soon as possible to avoid costly bills.


Can I remove my DPF?

No. Following an update to UK emissions laws, it is now illegal to drive a car that has had its filter removed. DPF removal will also mean you will fail your MOT


DPF Cleaning at Halfords Autocentres

We have two DPF cleaning options available, depending on how serious the fault of your DPF is:


DPF Maintenance Clean: Preventative treatment for filters with some build-up

Are your journeys usually fewer than 20 miles? Do you do a lot of stop-start driving? The DPF Maintenance Clean is designed for drivers making lots of short trips, where the engine isn't getting hot enough to burn off excess soot.
This product should be used every six months to keep your engine free from build-up




DPF Deep Clean: For filters with moderate to severe build-up

If your filter has moderate to severe build-up then the DPF Deep Clean may be the only option to avoid a complete filter replacement. As part of the Deep Clean, our highly skilled technicians will inject a special cleaning agent into the filter to remove the blockage.





My filter is completely blocked. What should I do?

If your filter is found to be completely blocked, our technicians will inspect the car to understand what has caused the blockage, and will carry out an intensive clean to solve the issue. In tough cases, the filter will be removed and soaked overnight before refitting.
We'll provide an accurate quote at the time of inspection. We will always discuss recommended repairs with you, before any work is carried out.



Why choose Halfords Autocentres?

  • Our technicians know their stuff - we serve over 750,000 customers every year
  • Book a convenient slot for you at one of our 300+ autocentres nationwid
  • All of our work is guaranteed for 12 months or 12,000 miles, whichever's soonest
  • We offer a four month interest free payment plan for repairs over £200
  • 9/10 customers would recommend us to a friend.*

Our expert technicians fix hundreds of DPFs ever year, saving our customers thousands in unnecessary car repair bills. What's more, our approved DPF cleaners have been extensively tested to confirm that they are suitable and safe to use on all diesel engines, so you can be confident that your car's in safe hands with us.


*based on 4000 customers filling out a feedback form every month.

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DPF Maintenance Clean

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