Drivers warned winter car clutter could trigger mould issues
- Perry Richardson
- 5 minutes ago
- 2 min read

Rising moisture levels inside vehicles are prompting fresh warnings for drivers as winter conditions settle across the UK. LeaseLoco has identified a range of everyday items commonly left in cabins that can trap damp and accelerate mould formation, a problem that can damage interiors and affect air quality.
The company noted that closed windows, frequent heater use and prolonged wet weather create an atmosphere where humidity builds quickly. Items such as wet coats, umbrellas and damp dog bedding introduce additional moisture that can sit unnoticed in footwells, boots and on upholstery. According to LeaseLoco, even a gym bag containing sweaty clothing can lead to musty odours within hours.
The firm said food waste is another overlooked contributor. Half-finished drinks and discarded wrappers retain liquid, leak into soft materials and attract bacteria. Floor mats are also highlighted, with water and dirt from clothing and footwear accumulating beneath them if they are not regularly shaken out and dried.
LeaseLoco’s chief executive John Wilmot said mould can form surprisingly fast during colder months when drivers rely on heating but are less inclined to ventilate cabins. He added that once mould takes hold it spreads across fabrics, carpets and into air vents, where removal becomes more complex and potentially costly.
Motoring specialists highlight moisture risks inside vehicles as damp weather increases the likelihood of mould growth.
The business advises regular checks of what has been left in the vehicle, prompt removal of damp belongings and routine cleaning to minimise risk. Ventilation remains essential despite the cold, with brief use of air conditioning helping to dehumidify the cabin. Drivers are also encouraged to monitor for damp spots and vacuum frequently to limit areas where moisture can settle.
Industry specialists consider the issue relevant not only to private motorists but also to fleet operators and professional drivers whose vehicles regularly encounter wet clothing, equipment and pets. Persistent mould can reduce vehicle lifespan, raise maintenance bills and lead to downtime while deep cleaning is carried out, ultimately impacting operational efficiency during the busiest winter months.
John Wilmot, CEO and founder of car leasing deals comparison site LeaseLoco said: “Mould can develop very quickly inside a car, especially in autumn and winter when the weather is damp and drivers rely on heating to keep themselves warm during their journeys.
“If damp items and clutter are left in the car, they can trap moisture, which can lead to mould growth. Everyday items like umbrellas, muddy boots and gym bags can create a mould problem without you even realising.
“Once mould’s taken hold, it can quickly spread to upholstery, carpets and even air vents, so it’s crucial to take preventative measures.
“A quick daily check of what’s been left in your car, along with simple steps like regular vacuuming and using your air-con to dehumidify the cabin, can make all the difference in keeping your vehicle fresh in winter.”






