Getting Rid of Mildew in Your Car's Interior

February 4, 2024

Opening the door to your car and being hit with a musty, moldy smell is never pleasant. Mildew and mold spores thrive in the warm, damp environment inside a car, especially if water has leaked in or condensation has built up. Getting rid of that mildew odor and stopping regrowth requires thorough cleaning and drying of the car's interior. According to the US EPA, "There is no practical way to eliminate all mold and mold spores in the indoor environment; the way to control indoor mold growth is to control moisture." With some work, you can banish mildew and restore your car’s cabin to a fresh, clean state.


In this article, we’ll cover how to effectively remove mildew and its associated smells from your car’s upholstery, carpets, and hard surfaces. We’ll go over key steps like vacuuming, using antimicrobial cleaners, steam cleaning, and thoroughly drying the car afterwards. While this process takes time and effort, it’s well worth it to erase unpleasant mildew and odors from your vehicle’s interior.

Vacuum Interior Thoroughly

The first step is to thoroughly vacuum all upholstery, carpeting, crevices and any visible mildew spots. This removes loose spores and dirt that harbor mold. Make sure to use a vacuum with good suction power and concentrate on areas like the floor mats, carpets, seats, door panels and any cracks or hard-to-reach spots. Vacuuming up the initial debris makes the deeper cleaning more effective.


If you need help with this first vacuuming step, professional mobile detailers like Westchester Auto Detail offer full interior detailing services, including thorough vacuuming. Their trained staff know how to methodically vacuum every inch of the car's interior to lift dirt and debris before deeper mildew removal.

Use a Commercial Anti Microbial Cleaner

After vacuuming, it’s time to use a strong commercial antimicrobial cleaner formulated to kill mold and mildew. Look for auto interior cleaners that contain ingredients like bleach, peroxide or vinegar. These chemical agents effectively attack mold and disinfect surfaces. Make sure the cleaner is specifically designed for auto interiors.


Spray or scrub the mildew-killing cleaner over all upholstery, carpets, crevices and any visible mildew spots. Be sure to open the trunk and hood and clean those areas too. Let it soak for 5-10 minutes then scrub with a stiff brush to lift deeply embedded mildew and stains.


Professional auto detailers frequently use strong antimicrobial cleaners and brushes to thoroughly attack mold in a car's interior. The experts at Westchester Auto Detail use effective cleaners coupled with diligent scrubbing and extraction as part of their mold removal service. This combination of products and technique helps remove contamination and odors.

Extract the Cleaner

After scrubbing the upholstery and carpet with cleaner, extract it using a wet/dry shop vacuum or carpet cleaning machine. This pulls out the dissolved mildew, spores and any musty odor from deep in the fabric. Thorough extraction prevents residue being left behind. Make sure to fully vacuum and extract all areas that were cleaned.


Some homeowners or DIY detailers rent carpet cleaning machines to effectively extract interior cleaners after scrubbing the mildew. For professional-grade extraction, the mobile detailing experts at Westchester Auto Detail use powerful suction to remove as much water as possible.

Steam Clean the Interior

For an even deeper clean, use a handheld steam cleaner after vacuuming and cleaning with an antimicrobial agent. The pressurized, high heat steam helps sanitize and remove odors. Carefully steam clean all upholstery, roof lining, door panels, gaps and crevices. The combination of heat, pressure and moisture flushes out contaminants.


Westchester Auto Detail frequently uses steam cleaning in their interior detailing process. It's an important step in eliminating tough odors like mildew. The heat and vapor of their professional steam cleaners disinfect the car's cabin.

Dry Thoroughly

This vital last step prevents mildew from recurring. Use towels, fans, heaters or even leave car doors open on a hot day to fully dry the interior. Dampness allows mildew to regrow rapidly, so dry all upholstery, carpets and crevices thoroughly.


Westchester Auto Detail's auto detailing experts always take care to thoroughly dry vehicles after deep cleaning interiors. They use fans, microfiber towels and other drying tools to eliminate all moisture. This drying process locks in the fresh, clean results after mildew removal.

Preventing Mildew Growth and Other FAQs


Here are some tips to help prevent mildew growth in your car's interior:

  • Keep the cabin clean and vacuum regularly. Don't allow dirt or debris to accumulate.
  • Fix any water leaks immediately and extract excess moisture right away.
  • Allow the interior to dry fully after steam cleaning or shampooing.
  • Use moisture absorbing products or leave baking soda inside to keep air dry.
  • Park in sunlight when possible and open windows to air it out.


Some other common questions about mildew in car interiors include:


How did the mildew get there?

Mildew spores are everywhere and will grow given the right conditions of darkness, warmth and moisture. Condensation, spills, leaks or flooding provide prime conditions for mildew to take hold in a car's fabrics and corners.


Is the mildew harmful?

Inhaling mold spores can potentially cause allergy or asthma symptoms in some people. Mold and mildew can also damage surfaces over time. Keeping your car mildew-free improves air quality and preserves upholstery.


Does mildew stain?

Yes, mildew can leave behind stubborn stains as the mold digs into materials. Thorough cleaning is required to lift out both stains and spores. Severely stained areas may need replacing.


With some work, you can remove mildew spores and their musty smell from your car. Focus on vacuuming, scrubbing with commercial cleaners, extracting, steam cleaning and drying thoroughly. For optimal results without the effort, contact a professional auto detailing service specializing in deep interior cleaning and odor removal. Keep your car’s cabin fresh and mold-free with vigilant cleaning.


A car seat with a headrest and a seat belt
July 1, 2025
Why quick action is critical — and why standard detailing won’t cut it Finding water inside your vehicle can be stressful- whether it’s from a rainstorm, a clogged sunroof drain, or a slow leak that’s gone unnoticed. Acting fast and taking the right steps can be the difference between a quick fix and a long-term mold problem. Here’s what to do immediately after you notice water intrusion inside of your vehicle. Step 1: Dry the Interior as Thoroughly as Possible Start by removing any standing water using towels or a wet/dry vacuum. Take out floor mats, open the doors or windows (weather permitting), and run fans or a dehumidifier to accelerate drying. But here's what most people don’t realize: Water often seeps deep beneath the carpet and insulation into areas that aren’t visible or accessible without disassembly. Even if the surface feels dry, moisture can linger for days underneath, creating the perfect conditions for mildew and mold to thrive. Step 2: Identify and Repair the Source of the Leak Drying the car is only part of the solution. If the source of the leak isn’t fixed, it’s only a matter of time before the problem returns. Common culprits include: Clogged sunroof or cowl drains Deteriorated door or trunk seals Faulty windshield or rear window seals Leaks in the HVAC system We always recommend having a technician or body shop inspect the vehicle to confirm and repair the root cause before any remediation work begins. Step 3: Bring the Vehicle to a Qualified Water Damage Specialist While it’s tempting to book a basic detail and hope for the best, standard detailing is not designed to handle water intrusion . Water that’s soaked into your vehicle’s padding, insulation, or lower cabin areas requires: Deep extraction to pull moisture from beneath the carpet Steam sanitization to kill bacteria and prevent mold growth Targeted enzyme treatments for contaminated surfaces Ozone or air disinfection to neutralize musty odors Inspection, treatment or replacement of soaked components like cabin filters or insulation This is the level of care that we offer at Westchester Auto Detail , and it’s essential for preventing long-term health risks, corrosion, and persistent odors. Don’t Wait — Water Damage Worsens Over Time Mold doesn’t just smell bad — it can damage your vehicle’s interior, affect air quality, and reduce resale value. The longer moisture lingers, the more likely you’ll face costly repairs down the line. If your car has been exposed to water, especially if it smells musty or shows visible signs of mold, don’t rely on surface cleaning. Bring it to a team that specializes in water damage and mold remediation . 💡 Need Help Now? At Westchester Auto Detail , we offer professional-grade mold remediation and interior decontamination services tailored for water-damaged vehicles. We work with daily drivers, vintage cars, and everything in between. Contact us today to schedule a consultation — we’re here to help you breathe easy again.
June 25, 2025
Your PCO car is your business, and just like any business, first impressions matter. A clean, well-detailed car instantly impresses passengers and improves their overall ride experience, leading to positive feedback and ratings. Imagine driving a car with sticky windows, coffee stains on the seats, or dirt accumulated in corners. The passengers will be instantly put off. Some may even consider cancelling the ride, which can directly affect your daily earnings. With car detailing, you can keep these issues at bay. Detailing is different from the standard car wash as it is a thorough process to improve your vehicle’s appearance and preserve its condition. If you are using PCO car hire , then your car provider will handle the detailing process. However, if you drive your own car, then you should know the following tips to keep your car well-detailed.  Use the Two Bucket Wash Method Some drivers use a single bucket to wash their cars. This is not an ideal approach as every time you dip the wash mitt into the dirty water and rub it on the surface, you grind dirt and grit right into it, resulting in swirl marks, dullness, or micro-scratches. Over time, this could make your sleek vehicle look neglected, and you will need a paint correction service to restore its original look. That’s why smart drivers use the two-bucket wash method. One bucket contains clean, soapy water while the other bucket is for rinsing your mitt. This prevents the dirt and grit from damaging the vehicle surface and helps you get better results. It’s a small step with a huge impact. Invest in a Quality Interior Cleaner A cheap cleaner may save you money upfront, but it can cost you more in the long run. This is because many cheap interior cleaners leave behind a strong smell, fade fast, and could damage materials. Some even soak into fabric seats and turn them into odour traps. Some passengers are allergic to strong smells, and if your car smells like chemicals, they will consider other options. Now, imagine losing rides because of that. You will end up losing more money than you had saved by buying a cheap product. So, always use a quality interior cleaner, one that doesn’t have a lingering smell, doesn’t damage materials, and works on various surfaces such as dashboards, leather, vinyl, and plastic. Bonus points if it’s safe to use around sensitive areas like infotainment screens. Vacuum the Car Regularly Dust and crumbs can build up under the seats, in footwells, and between the seat cushions. Sometimes, regular cleaning is not enough to remove them from your car. You need to vacuum it to properly get rid of them. So, get yourself a cordless vacuum and use it at least twice a week, particularly if you are doing long shifts, because the more passengers you pick up, the faster the mess builds up. However, there’s no hard and fast rule as to how often you should vacuum the car. Watch for passengers who eat food during a ride. If any crumbs are left behind, vacuum the car immediately to provide the next passengers with a clean environment. Don’t Forget the Headliner Headliner is the ceiling of the car. Many drivers ignore it, thinking it’s not as important as other parts of the car. However, this is a big mistake. Like any other area, the headliner can accumulate dust, grease, odours, and airborne grime. In fact, most smells in the car stick to the headliner. The food you ate during a break, the coffee a passenger just drank in your car, or even the sweat from riders - those smells all cling to the headliner. Once these smells settle, no amount of air freshener will hide them. That’s why you should regularly clean the headliner as well. Remember to use a microfibre cloth with a gentle cleaner and lightly wipe the surface. Don’t scrub too hard, as it can loosen the glue underneath. Keep Microfibre Cloths in Your Glovebox Whether you drive your own vehicle or PCO rental cars , you should always have microfibre cloths within arm’s reach during your shifts because you may need them at any time. Let’s suppose someone touches your car's windows and leaves behind oily fingerprints, sneezes near the dashboard, or spills coffee. A microfibre cloth will help you clean the surface immediately. These cloths are designed to remove dirt, dust, and oil at microscopic level without scratching the surface. Keep at least four sets of microfibre cloths in your car: one for glass surfaces, one for interior plastics, one for emergency spills, and one for wet cleaning. Use a Detailing Brush for Vents and Buttons Vents and buttons are among the most-used parts of PCO cars. Dirt and grime could quickly build up in these areas and negatively impact the appearance of your car’s interior. Many PCO drivers use a detailing brush for vents and buttons. Remember that a detailing brush is different from a toothbrush or a paintbrush. It comes with soft-bristles specially designed for narrow and delicate surfaces. It’s gentle enough to prevent scratches, but strong enough to pull out dirt, hair, crumbs, and other mess from areas where microfibre cloths don’t work. The best part is that it’s affordable and takes just a few minutes to clean. Schedule a Monthly Deep Clean Despite the regular DIY cleaning, you should book a monthly deep clean with a professional company as well. Make sure every inch of your vehicle gets attention during that session. Get the carpets shampooed to remove the buildup of dirt, salt, and spilt takeaways. The seats, especially if they’re made of fabric, should be steam-cleaned, while the vents and even cupholders need to be scrubbed spotless. The same goes for the outside. Get your car body properly polished and waxed. Make sure the scratches are fixed with a scratch removal and repair service, and the tyres should get some treatment as well. The cleaner the car, the better the passenger experience. Conclusion The way you present your car matters a lot. A clean, well-detailed vehicle sets the tone for a pleasant passenger experience that ultimately results in five-star ratings. On the other hand, a car that looks dull and neglected could leave a negative impression on the passengers. Start following the tips we mentioned above, and you will instantly notice a difference in how the riders respond.
March 24, 2025
Acidic cleaners represent a critical category of professional detailing products, operating below pH 7 on the chemical scale. These specialized solutions play an essential role in modern detailing but require proper understanding and handling protocols. This guide provides comprehensive information for professional detailers and serious enthusiasts about the effective and safe use of acidic cleaning products. Understanding the Chemistry Professional-grade acidic cleaners function through specific chemical reactions that target inorganic contaminants. These products are particularly effective at: Dissolving mineral deposits Breaking down iron contamination Removing brake dust Treating oxidation Eliminating water spots Common Uses for Acid in Professional Detailing Wheel Cleaners Acid based wheel cleaners are a popular choice in car detailing because of their powerful ability to clean wheels and brakes. Acidic wheel cleaners are specifically formulated to tackle brake pad deposits, rust, and other stubborn contaminants found on rims and hubcaps. They commonly contain strong acids with a pH around 1 . Caution is advised when using acid on wheels. Improper use can result in severe damage to wheel finishes, particularly on polished, chrome, or aluminum surfaces. It’s important to keep an eye on dwell time of the chemical and to ensure that it is not being dried on the surface or kept in direct sunlight. These chemicals can damage paint and glass if not used properly. Fall Out Removers Fall out removers with a neutral pH are normally recommended for ongoing paint and wheel maintenance. While they are less aggressive than acidic cleaners, they offer similar benefits when decontaminating wheels and paint with less risks of degradation of surfaces or misuse. Gentle acidic products like Crystal Wash by P&S can be used for removing inorganic contaminants like metal filings and rust, while also addressing limescale and water spots on windows and paint surfaces. Benefits of Using Acidic Chemicals When Detailing Acids are effective in removing mineral deposits, like water spotting, rust and other inorganic residues. Most water spot removal chemicals are a form of a gentle acid capable of breaking down calcium and salt deposits that occur during the winter. When using a water spot remover, we always recommend following the instructions on the chemical. Wash the panel off after use of the chemical to ensure there are no residues left over. A variety of shampoos designed for unclogging ceramic coatings sit at a pH slightly below 7. Using acids in turn requires less agitation for a deeper clean of wheels or a ceramic coating, preserving the surface, avoiding scratches or premature aging of the materials. Potential Risks of Using Acids on Cars While acidic chemicals offer numerous benefits for car detailing, using these chemicals requires caution. Acidic cleaners can harm vehicle finishes, especially if they come into contact with paint or anodized aluminum surfaces. Some acidic products contain hazardous substances that can pose serious health risks, such as skin irritation or respiratory issues, necessitating the use of protective equipment during application. Protective gear, such as gloves and goggles, should always be worn to safeguard against splashes, and it is advisable to conduct a spot test on inconspicuous areas to ensure compatibility with the surface being cleaned.
More Posts