How to Get Rid of Mould Growing Inside Your Car

How to Get Rid of Mould Growing Inside Your Car
Photo: PattyPhoto, Shutterstock

Owning a car or other vehicle can be a mixed bag. On the one hand, you have the freedom to go wherever you want, without having to rely on public transit, or your own two feet — something that has made them especially coveted during the pandemic. But on the other hand their expenses can add up quickly between insurance, petrol, tolls and regular maintenance.

And then there are those other situations that arise unexpectedly: like opening your car door one morning and being greeted by the sight and/or smell of mould. If you have the financial resources to turn your vehicle over to a professional and let them take care of the mould situation — that’s great. But if that’s not an expense you had in your monthly budget, it is something you can do yourself at home. Here’s how.

Why do cars get mouldy?

The most common reason vehicles get mouldy inside is because moisture is getting into your interior somehow. This could be from leaving your windows or sunroof open when it’s raining, or spilling a large amount of liquid that then gets soaked into the upholstery. Mould will grow and spread even faster if your vehicle with a damp interior is kept someplace warm.

We should note that we’ll be talking about vehicles with relatively mild mould problems, resulting from a spill or water getting in during a few hours of rain — not the kind you might see in a car that has been abandoned or sitting outdoors for years (or even decades). If that’s the case, you’re going to need a lot more help than this.

How to remove mould from a vehicle’s interior

First, a word about why putting the time and effort into getting rid of mould in your car is so important. While there are different types of mould — with some being more harmful to our health than others — in general, it’s not something you want around you at any point (especially if you have allergies).

Fortunately, Chris Teague over at The Drive, has put together a handy guide to DIY vehicle mould removal.

What you’ll need:

  • Vacuum
  • Spray Bottle
  • Towels or rags
  • Scrub brush
  • Gloves
  • Eye protection
  • Mask
  • White distilled vinegar
  • Automotive cleaning wipes
  • Spray carpet or vehicle interior cleaner

What to do:

Prepare the car for cleaning:

Before you can start scrubbing or cleaning the mould, you’ll want to be sure that the interior of the car is at least partially cleaned.

  1. Remove trash, personal belongings, paperwork, and other items from the interior. Throw away anything that has mould growth on it.
  2. Thoroughly vacuum the carpets, seats, and other soft finishes.
  3. Inspect the car for leaks and damaged seals. Moisture that enters the vehicle will help the mould continue to grow. If there is a leak and you do not repair it, you’ll likely be cleaning mould out of your car again in the future.

Removing the mould:

  1. Fill your spray bottle with white distilled vinegar. It’s essential to use a new spray bottle, if at all possible because any residue left inside the bottle from previous use can cause issues. If you don’t like vinegar, you can use bleach diluted in water, but you’ll need to test it out on a hidden spot of your car to make sure you’re not killing the colours
  2. Spray the solution directly onto carpeting, seats, and any other surface where there is mould. Saturate the area thoroughly.
  3. Use a scrub brush to work the vinegar solution into the affected area, spraying more if needed.
  4. Let the surfaces dry. If you have a garage where the car can be parked safely indoors, it’s best to leave the windows down to allow fresh air to circulate in and out.

There is a lot more information in Teague’s guide, so check that out for additional tips.


  • Mould within a car is most often found within the cars air conditioner, more than anywhere else in the car … Yet your article doesnt disuss this at all … Or even tips as to how to prevent mould forming there in first place.

    This article is next to useless, esp for ppl in AU where it’s currently 40+ odd degrees – which is why i talk about mould in the A/C unit.

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