Why Car Mats Smell in the UAE Heat, and Which Materials Don't
By the SFOM CARMATS workshop, Sharjah · Updated
Short answer. Car mats smell in the UAE heat because a parked cabin reaches 60–70°C, and at that temperature flexible PVC releases its plasticisers, rubber releases its own volatiles, and the glue holding foam under a 5D or 7D skin softens and off-gasses. Wool, polyamide, pile and EVA do not smell in the heat; TPE is low; rubber is medium; PVC 5D and 7D trays are high. SFOM CARMATS cuts measured EVA, pile, polyamide and wool sets with no foam and no glued laminate, from AED 250, in its own Sharjah workshop.
A parked car in the UAE reaches 60–70°C inside
Park a car in the sun in Dubai in July and by mid-afternoon the cabin is around 60°C, with the surfaces the sun touches hotter still, into the 70s. The floor is out of direct sun, but it sits in that air for six to eight hours a day, and it is the least ventilated part of the cabin.
Most materials are stable at 25°C and start giving something off well before 60°C. That is why a set of mats that was fine in the shop smells by the first weekend, and why the smell is worst when you open the door after work, before the air-conditioning has had a chance.
Where the smell comes from
Three sources account for almost all of it. The first is plasticiser. Flexible PVC, the leather skin on 5D and 7D trays and the body of cheap universal mats, is rigid on its own; it is made soft by adding plasticisers, and heat drives them out of the material and into the air. That is the sweet, chemical smell, and it is also the film on the inside of the windscreen.
The second is the laminate. A 5D or 7D tray is XPE foam glued to a PVC skin. The adhesive and the foam both off-gas when hot, and as the layers separate over the first summer, more surface is exposed and the smell gets worse, not better.
The third is rubber. Vulcanised rubber mats give off sulphur compounds when hot, the smell of a tyre shop. It fades over weeks, unlike PVC, which keeps going as long as there is plasticiser to lose.
- Plasticiser out of a PVC skin: sweet chemical smell, windscreen film, does not fade
- Adhesive and foam in a laminated tray: worse as the layers separate
- Sulphur from rubber: tyre-shop smell, fades over weeks
| Material | Smell in heat | Why | Where you find it |
|---|---|---|---|
| Wool | None | Natural fibre on a backing, no plasticiser, no foam | Measured sets (SFOM Premium Wool, AED 1400) |
| Nylon | None | Synthetic fibre on a backing, no plasticiser | Measured sets (SFOM Sky Star 20mm, AED 900) |
| Pile | None | Automotive pile on a backing, no plasticiser, no foam | Measured sets (SFOM Polyamide 12mm, AED 450) |
| EVA | None | Cured closed-cell foam, no plasticiser, does not absorb smells | Measured sets (SFOM, AED 250) |
| TPE | Low | Thermoplastic elastomer, no plasticiser | Model-specific moulded trays |
| Rubber | Medium | Sulphur volatiles that fade over weeks | Universal mats, some moulded trays |
| PVC (5D, 7D) | High | Plasticiser off-gassing plus a glued foam laminate | 5D, 7D and 9D trays, cheap universal mats |
Car mat materials ranked by smell in the heat
Ranked from none to strong: wool, polyamide, pile and EVA give off nothing you can smell; TPE is low; rubber is medium; PVC 5D and 7D trays are high. Wool, polyamide and pile are fibres on a backing with no plasticiser and no foam. EVA is a cross-linked closed-cell foam that is cured, not plasticised, and it does not absorb smells from elsewhere in the cabin either.
TPE, the material of model-specific moulded trays, has no plasticiser and is close to odourless. Rubber sits in the middle. PVC is last: it smells most, it smells longest, and in a laminated tray it drags the foam and the glue along with it.
The ranking has nothing to do with price or with how many Ds are on the label. A 7D set at around AED 350 smells more than a measured EVA set at AED 250 because of what it is made of, not what it costs.
How to get the smell out of mats you already own
If the mats are PVC or rubber and you want to keep them, you can reduce the smell but not remove it. Take them out and leave them in the sun and open air for two or three days; heat drives the volatiles out faster when they are outside the car. Wash them with mild soap and water, dry them fully, then sprinkle baking soda over the surface, leave it overnight and vacuum or rinse it off.
Do not use chlorine bleach or solvent cleaners. Bleach attacks PVC and rubber and leaves its own smell; solvents pull more plasticiser to the surface. Air fresheners cover the smell for an hour and add to the load in the cabin.
If the tray is a 5D or 7D laminate and the skin has started to lift, the smell will keep returning as the layers separate. At that point the practical fix is to replace it with something that does not off-gas.
- Air them outside in the sun for 2–3 days
- Wash with mild soap, dry fully, baking soda overnight, vacuum
- No chlorine bleach, no solvents, no air freshener
How not to buy a smelling set: the sun test
Before you commit to a tray or a marketplace set, put one piece on the dashboard or the rear shelf of your car, park it in the sun for two hours and open the door. If it smells then, it will smell all summer. A shop at 22°C tells you nothing; the test has to be at cabin temperature.
Read the material line, not the label. Leather, eco-leather and 5D leather on a listing mean PVC. Rubber means rubber. TPE, EVA, polyamide and wool are the ones that pass.
We use the same test on our own rolls. Diamond-quilted eco-leather is the material customers ask about most after wool, and we do not offer it yet because it has not passed our heat test.
Why a measured set without foam smells less
Our sets are one material each, cut to your car and edged in stitched leather. EVA is a single closed-cell sheet. Polyamide 12mm is a 12 mm polyamide pile on its backing. Sky Star 20mm and Premium Wool are weaves and piles on their backings. None of them has a foam core, a PVC skin or a glued laminate, so there is nothing to off-gas and nothing to separate over a summer.
The edging is sewn, not glued, so there is no adhesive line around the mat to soften in the heat. What you smell in a cabin with a measured set is the cabin, not the mats. How a measured set is made is in our guide to car mats in Dubai.
Prices are AED 250 for EVA, AED 450 for Polyamide 12mm, AED 900 for Sky Star 20mm and AED 1400 for Premium Wool, with measuring and fitting at your place included in Dubai and Sharjah; the car mat price list has the trunk mat add-on for each material. Stocked colours are ready in 1–2 days, made-to-order in 2–4. Send your make, model and year on WhatsApp to +971 58 517 2771 for the exact price.
Price in minutes, fitted at your door
Send the make, model and year — we reply with the exact price and two measuring slots. Workshop in Sharjah, fitting across Dubai.
Questions
Why do my new car mats smell so bad in summer?
Because the cabin reaches 60–70°C and the mats are PVC or rubber. PVC releases plasticisers and, in a 5D or 7D tray, the glued foam under the skin adds to it. The smell is worst when you open the door after the car has sat in the sun.
Which car mats do not smell in the heat?
Wool, polyamide, pile and EVA give off nothing you can smell; TPE is low. All our measured sets are one of the first four, with no foam and no PVC, from AED 250.
Is the smell from car mats harmful?
We are a workshop, not a laboratory, so we do not make health claims. What we can say is that the smell is plasticiser leaving the PVC, the same compound that leaves a film on the inside of the windscreen, and that materials without PVC do not produce it.
How do I get the smell out of 7D car mats?
Air them outside in the sun for 2–3 days, wash with mild soap, dry fully and leave baking soda on them overnight. Do not use bleach or solvents. If the skin has started to lift from the foam, the smell will return as the layers separate.