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Oct 12, 2018 - 4 minute read

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Will DPF Delete Pass Emissions Tests?

Will DPF Delete Pass Emissions
(Last Updated On: October 2, 2020)

The short answer to will DPF delete pass emissions is NO. In this article, we will review why it will not and what the circumstances can be if you do delete.

Why Is A DPF So Important?

For almost twenty years, most diesel cars have been fitted with filters called diesel particulate filters.

These filters capture exhaust soot with the ultimate goal being a reduction particulates in emissions from diesel vehicles.

Why Is A DPF So Important

Why Is A DPF So Important

They store the soot that they capture, so they need to be emptied periodically when they are full.

This occurs in a burning process, which cleanly burns off the soot that is stored in the filter. This reduces harmful exhaust emissions and is much better for the environment.

If the burning process is not being carried out correctly, it can affect the performance of the engine due to soot buildup.

These issues can snowball into more expensive repairs and become a real nuisance. If your DPF is clogged, you’ll see a light on your dashboard.

Why are DPFs So Important

Why are DPFs So Important

Though there are a few possible answers for why your DPF filter may be clogged, it is most commonly caused by short drives at low speeds.

It has also often been attributed to poor servicing on the vehicle or using unsuitable oil in your vehicle.

There are other things that you can do to help the performance of your DPF. The first is that you can drive your car at significant speeds on the highway regularly.

This gives the DPF a chance to cleanly burn off the excess soot since the temperature will be higher.

The other is that you can ensure your car gets good service with professional mechanics that know how to properly work on diesel cars.

Will DPF Delete Pass Emissions Tests?

Because of the common problems coming from the DPF, some drivers remove their DPF. This is environmentally irresponsible and illegal.

There is a reason that diesel cars have diesel particulate filters.

That reason is that there are regulations on the emissions that come from cars. DPFs are how cars meet that solution, and they help to control emissions.

Removing your DPF from your diesel car makes your car illegal for the road.

Will dpf delete pass emissions?

Will dpf delete pass emissions?

You should be wary of any shop or service that offers to remove your DPF to increase the economy of your vehicle.

This is an illegal modification and you will be held liable for it. The punishment for this offense varies, but no matter where you are located, the fine will be significant and certainly not worth the small amount of money you might save by removing the DPF.

In the past, it was possible to bypass the emissions regulations so that a diesel with DPF delete would pass emissions.

Now though, it’s much harder. It’s very likely that a diesel with DPF deleted will now fail emissions test, no matter what country or state you are in.

That is why it is strongly discouraged that you do no DPF delete your diesel vehicle.


Removing the DPF on your diesel vehicle is environmentally irresponsible and is illegal.

Protecting our environment has become a priority for governments all over the world and they’ve taken steps to ensure that anyone trying to bypass those standards is caught and punished.

It is our civic duty to protect our environment, so by making an effort to bypass those regulations, you are damaging public resources and therefore your fellow civilians. Furthermore, removing the DPF can cause you thousands in fines and lost time.

Removing your DPF causes damage to you and those around you, so you should exercise restraint and take steps to properly service your diesel vehicle.

Instead of removing your DPF, do proper maintenance on the part and follow our outlined steps for ensuring the burn process commences regularly.