
So what does it actually do?
Cabin filters basically filter out all the particulates and any debris that is coming into your air cabin from the outside environment. They’re normally located somewhere around the glove box, around a scuttle and in some of the later EVs they are even in the engine bay.
The reason they’re really good is because they filter out all the kinds of emissions, like the smoke coming out of vehicles, ozone gases and pollen and anything that’s harmful to the driver or the passenger inside the vehicle.

How bad is air pollution inside the cabin?
Well, did you know that your cabin air is five times more polluted than the air outside you? Bet you never thought about that. So that’s why it’s really important to have a high quality, high performing filter fitted in your vehicle and changed frequently.
But also they do help the actual HVAC system because if these become blocked, it puts the blower motors and all the aircon system under extra strain. So that can actually shorten the lifespan of all the equipment in a HVAC system. Another interesting fact is, do you know how much air is being pumped into the cabin every hour? It could be up to 540,000 litres per hour that’s circulating around your vehicle, especially if you have the windows closed, it’ll just be circulating all those germs, all those particulates, all the mould spores, all the dust, all the emissions from off the road will just be pumping around there.
So what cabin filters are available?
MANN do three levels of filters. They all have various different protections. You’ve got the basic one, which we’ll take a look at next. You’ve got the activated charcoal one and then you’ve got the top of the line one, which is their Frecious Plus cabin filter.
The good thing about the charcoal activated product is it eliminates 90 per cent of all odours coming into the vehicle, which will make the cabin smell a hell of a lot nicer, which is always pleasant, but also it blocks out some really harmful gases like ozone gases, nitrogen oxide, and sulphur dioxide.

The Frecious Plus does exactly the same as all the other filters I’ve previously shown you, but it also provides up to 95 per cent protection against all the particulate matter coming into your cabin. It also protects against 95 per cent of all allergens. But most importantly, it stops mould and bacteria actually growing on the filter itself, which is really important. So, if you want a top of the range filter that’s going to filter the air coming into your cabin really, really well, the Frecious Plus is the one.
The verdict
I’m a big advocate for them. I fit, well my company fits, thousands and I mean thousands, of MANN filters a year. And we haven’t had one comeback in all the years that we’ve been using MANN filters. So, I can vouch for how good they are.
Visit www.mann-filter.com for more information.