How Long Does It Take for a New Car to Be Free of Formaldehyde?
2 Answers
Generally speaking, the interior environment of a car is relatively enclosed, making it difficult for formaldehyde to dissipate. The volatilization period of formaldehyde ranges from three to fifteen years. Within the first six months of purchasing a new car, it is advisable to frequently expose the car to direct sunlight with the windows open for ventilation. This can accelerate the release of formaldehyde from the car, significantly reducing its concentration. Below are more detailed measures: Place bamboo charcoal bags in the car: The bamboo charcoal in these bags has a porous structure with strong adsorption capabilities, effectively absorbing harmful gases such as formaldehyde, benzene, and sulfur dioxide inside the car while releasing natural minerals. Additionally, bamboo charcoal bags have excellent moisture absorption properties, helping to dehumidify, deodorize, and prevent mold in the car. Purchase and use a car air purifier: A car air purifier can filter the air inside the car, not only effectively removing formaldehyde but also significantly reducing pollutants such as PM2.5, TVOC, odors, bacteria, and viruses, thereby creating a healthier in-car environment. Visit a professional car detailing shop for a photocatalytic coating: Similar to common air fresheners, photocatalysts are liquid-based, primarily composed of titanium dioxide. Upon absorbing ultraviolet light from sunlight or artificial lighting, they react to produce substances that can break down organic compounds and their nutrients, decomposing harmful substances in the air like formaldehyde, benzene, and toluene into harmless water and carbon dioxide. This process purifies the air, effectively preventing mold, eliminating odors, and providing antibacterial and antimicrobial benefits.
When I first got my new car, the strong, pungent smell was quite uncomfortable—it was actually formaldehyde being released. The interior materials like plastic and leather used adhesives containing formaldehyde during production. I remember every morning I would deliberately park at the ventilation outlet in the underground garage, roll down all the windows for 30 minutes, and placed several packs of activated charcoal on the back seats to absorb the odor. After two weeks, the smell had noticeably faded. Later, I asked a mechanic, who said the high-concentration formaldehyde period in new cars usually lasts the first few months, but frequent ventilation can speed up the dissipation—likely eliminating most of the smell in about two months, though continuous window ventilation is necessary to avoid a stuffy interior. In summer, I’d choose to park in direct sunlight with windows closed to bake the car before ventilating, which works even faster. Safety comes first—never rush to take long drives with windows closed.
