The short answer
Find the Moisture Source
A musty smell usually means moisture is hiding somewhere. Check the floor mats, under the seats, and in the trunk for dampness. Look for water stains on the ceiling or a wet carpet. A leaky window seal, sunroof drain, or door gasket can let water in during rain or a car wash.
Also inspect the cabin air filter. A clogged, wet filter is a common source of musty odors. If the filter is dirty or damp, replace it. You can do this yourself or have a mechanic do it. In humid weather, these issues can become more noticeable.
Dry Out the Interior
Once you find the source, dry the interior as much as possible. Remove floor mats and wet carpets and dry them outside. Use towels to soak up standing water. Open the windows and let the car air out in a dry, shaded spot. A fan can help circulate air and speed up drying.
If the moisture is deep in the padding or under the carpet, simple air drying may not be enough. The pros use dehumidifiers and structural drying equipment to remove trapped moisture. This can be essential in a humid subtropical climate where the air alone won't dry things quickly.
- Remove and dry floor mats
- Use towels to absorb standing water
- Open windows and doors to ventilate
- Run a fan inside the car
- Replace the cabin air filter
- Check and clean drain tubes
Clean and Neutralize Odors
After drying, clean the affected surfaces. Vacuum the carpets and upholstery to remove dirt and mold spores. Then mix a solution of equal parts white vinegar and water. Wipe down hard surfaces, and lightly mist the fabric areas. Vinegar neutralizes odors without harsh chemicals.
Baking soda is another option. Sprinkle it on carpets and seats, let it sit for a few hours, then vacuum it up. For stubborn smells, you can use an enzymatic cleaner designed for pet odors. These break down the organic material that causes the musty smell.
Prevent Future Musty Smells
Keep your car dry to avoid the smell returning. After rainy days, wipe down wet surfaces and leave the windows cracked for a while. Use a moisture absorber or silica gel packet under the seats. Regularly check the weather seals and replace them if they are cracked or brittle.
Also, run the air conditioner on a dry setting occasionally. This helps remove humidity from the cabin. If you park in a garage, keep the garage ventilated. A small dehumidifier in the garage can also help keep your car dry.
When to Call the Pros
If the smell persists after your own efforts, deeper moisture may be trapped. The pros have specialized equipment to dry out carpets, padding, and insulation. They can also map moisture levels to find hidden water. This is especially important if the car was flooded or has been damp for a long time.
Calling in the pros can save you from mold growth and interior damage. They can remove water-damaged materials if needed and dry the structure thoroughly. For a car, look for a professional water damage service that handles vehicles, or a trusted detailer with drying equipment.
- Persistent smell after thorough cleaning
- Visible mold or mildew growth
- Water stains on ceiling or seats
- Recent flood or heavy water exposure
- Musty smell returns quickly after drying
Talk to someone now
Phones are answered 24/7 for Rogers and nearby communities.
Call Now (479) 370-1500Frequently asked questions
Can I use bleach to get rid of the musty smell?
Bleach can kill mold on hard surfaces, but it is harsh and can damage car upholstery and carpets. It also leaves a strong odor. Instead, use vinegar or a mild detergent. For fabric, an enzymatic cleaner is safer and more effective.
How long does it take to get rid of a musty smell?
It depends on the source and how much moisture is trapped. Simple surface smells may go away in a day or two with airing out. Deeper moisture can take several days of drying and cleaning. If the smell persists, professional drying may be needed.
Is a musty smell in my car a health risk?
A musty smell often means mold or mildew is present. Breathing in mold spores can cause respiratory issues, especially for people with allergies or asthma. If you feel unwell, see a doctor. Address the moisture source quickly to prevent mold growth.