Sounds like the interior.
The least expensive solution bleach. It will kill the mold on contact, but...it's the most aggressive approach. Mix one part diluted with 3 parts of water, let it stand on surface for 10 to 15 minutes, scruff it up with a soft scrub brush, rinsed down with water, and allow to air dry. TEST AN INCONSPICUOUS AREA BEFORE ATTEMPTING THIS. IF DISCOLORATION OCCURS, DILUTE BLEACH WITH MORE WATER.
Your next option would be store-bought X-14, Tilex etc. - doing it the same way as the bleach. Then you COULD try Lysol, but that won't REMOVE the mold/mildew.
There's also environmentally friendly stuff H2Orange2 is one. It is a total, neutral PH product when added to water and has the lowest toxicity of any product in the marketplace. It's got citrus oil, some mild detergent and hydrogen peroxide which oxidizes the mold, and brightens & bleaches out stains.
Good luck, and if you try any of these, let us know how things turn out.
Either of these suggestions can be used on your top, vinyl or carpet. TEST AREAS FIRST!