The particle filter is a pretty modern invention that aims to remove harmful particles from the exhaust gases of latest diesels. It has long been seen as the miracle solution to these pollution problems. Nevertheless, it doesn’t work as well as intended and triggers more problems than it handles, which is why we will see in this article when changing the particulate filter of a Audi A4? . To achieve this, first of all, we will identify what the particle filter on your motor vehicle is utilized for, and then when to change the particle filter on your Audi A4.

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What’s the point of a Audi A4’s particulate filter?

So we start our article with the reason for this component not too long ago included into diesel vehicles. As we outlined quickly in the introduction, the intent of this filter was to solve the problems of pollution and harmfulness of exhaust gases from Audi A4 vehicles. Its functioning concept is to store exhaust gases that are unburned or that still contain harmful particles, and when it is at a sufficiently high temperature to bring about a second combustion that will finish burning and eliminate all these carcinogenic particles. Sadly, to reach this very high engine unit temperature, you have to be on the highway or have your Audi A4 engine unit revving up. So we have noticed over time that cars that are specifically on short trips or in the city do not allow the particulate filter to burn these gases and we will observe in the next section that these problems can force you to change the particulate filter of your Audi A4 .

When to change the particulate filter of a Audi A4?

In this section we will identify what you are certainly attracted to here, if it is necessary to change the particulate filter of a Audi A4 and if so, when?

Is it necessary to change the particulate filter on Audi A4?

There are 2 sort of particulate filter for cars, a particulate filter with additive, which does not concern the Audi A4, but which needs to be recharged every 120, 000km with an additive that allows the regeneration of the particulate filter and therefore to burn all those harmful soot. The second one, the one we are enthusiastic about in this article, functions with precious metals that will create a chemical reaction at high temperature and bring about the regeneration of the filter and the evacuation of the carcinogenic materials. Nevertheless, as described earlier, it needs very high temperatures, if these are not reached the filter will clog. If the filter is not regenerated manually, drive at high speed for about 20 minutes to reach this temperature and thus regenerate your filter, you will clog it and risk damaging your turbo, your EGR valve or your engine unit. If you need to clean the EGR valve of your Audi A4 as a result of your particulate filter, do not think twice to check out our content page on this subject to identify what the process is.

When to change the particulate filter of a Audi A4?

As we described just before, a particulate filter is supposed to last the life of the vehicle, however some of you might wonder when it is necessary to change the particulate filter of its Audi A4? Be aware that this component is extremely expensive, labor is not the most important issue because it is easy to access. But the component itself will vary enormously in price based on your motorization, you can still count a range between 700 and 2000€. This change should only be considered in the circumstance of a completely clogged particle filter. If you don’t frequently take the motorway, we recommend you, every month to drive 10 minutes on the motorway at least 3000 rpm . In spite of everything, the current particulate filter have not been well designed and remain problematic, it is considered that as a result of the lack of a sufficiently regular temperature rise and other design problems, you should begin planning to change your particulate filter from 200, 000km if you have a use of your XX that is more urban and a little more if it is mixed .

If you want more guides on the Audi A4, go to our Audi A4 category.