DPF Problems? FAQ

A DPF (Diesel Particulate Filter) is a component in diesel vehicles that traps harmful soot and particulate matter from exhaust gases. It helps reduce emissions and is legally required on modern diesel engines.

Common signs include warning lights on the dashboard, reduced engine performance, increased fuel consumption, poor throttle response, or the car going into limp mode.

You may be able to drive short distances, but it’s not recommended. Driving with a blocked DPF can cause serious engine damage and could result in the vehicle breaking down.

Yes, if the DPF is not functioning properly, your car can fail the emissions portion of the MOT. If the filter has been removed or tampered with, that will also result in an automatic fail.

Frequent short trips, low engine speeds, poor fuel quality, or a failed regeneration cycle due to a fault can all cause soot to build up in the DPF until it becomes clogged.

Regeneration is the process where your car burns off the soot inside the DPF. This happens automatically under certain conditions, such as sustained motorway driving at high RPMs.

Regeneration often fails if the vehicle isn’t driven long enough or fast enough to reach the required temperature. Faulty sensors or incorrect driving conditions can also interrupt the process.

Yes. In most cases, a DPF can be professionally cleaned to restore flow and performance, saving hundreds or even thousands of pounds compared to replacement.

We use specialist equipment and safe cleaning agents to break down and flush out soot and oil residue from the filter. The process includes diagnostics and post-clean testing to ensure full restoration

Our DPF cleaning service normally takes between 1.5 to 2.5 hours, including diagnostics, the cleaning process, and post-clean checks.

Yes, professional DPF cleaning is non-invasive and completely safe when performed correctly. It can actually improve engine performance and prolong its life.

Prices vary based on vehicle type and severity of blockage, but cleaning typically costs significantly less than replacing the filter. Contact us for a fixed-price quote

There’s no set interval, but if your driving habits include frequent short trips or urban driving, it’s a good idea to have your DPF checked and cleaned proactively every 1–2 years.

While fuel additives claim to help clean the DPF, they are rarely effective on heavily blocked filters. Professional cleaning is far more thorough and reliable.

Yes, we provide a full mobile DPF cleaning service at your home or workplace. Our technicians are fully equipped to diagnose and restore your DPF on-site.