Cool It: Hyundai Testing Innovative Window Film

Matthew Guy
by Matthew Guy

Applying tint to window glass is hardly a new way to keep the cabin of one’s car cool in direct sunlight – but Hyundai claims there remains innovations to explore in the field of beating the summer heat.

According to the company, a new product it is calling Nano Cooling Film can block external heat energy whilst also emitting internal radiant heat to the outside. Through this, the material is said to significantly reduce a car’s interior temps without violating tint laws and maintaining high transparency to allow unobstructed vision. Cops will have to find a different excuse to pull people over for no reason.


Testing is underway in hottest Pakistan, with the product being applied to a total of 70 Hyundai vehicles on the road in that region. Today’s forecasted high in the area was 94F with 46 percent humidity, if you’re wondering. Daily temps in the summertime can reportedly crest 120 degrees Fahrenheit. A proper place in which to test this stuff, then. 


The science behind the functions of Nano Cooling Film is far beyond this author’s pay grade but it apparently maximizes heat dissipation by incorporating a nanostructure that has excellent heat transfer characteristics. The film’s outer layer is said to radiate heat at mid-infrared wavelengths from the interior of the vehicle to the exterior, while the inner two layers reflect incoming heat at near-infrared wavelengths, reducing the total amount of heat that reaches the inside of the vehicle. In other words, if it all works as advertised, the stuff not only prevents heat from entering the car but also assists with getting rid of the stuff. Clever.


Temps are said to have dropped by up to 12 degrees Celsius in some testing conditions but specific ambient temperatures aren't mentioned. As an example including Fahrenheit, a twelve degree plunge from 38C to 26C would be similar to 100F to 79F. That's a big deal.


Evidently, this product is far from a flight of fancy with Hyundai suggesting it is on the cusp of rolling it out to mass production in some markets. 


[Image: Hyundai]


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Matthew Guy
Matthew Guy

Matthew buys, sells, fixes, & races cars. As a human index of auto & auction knowledge, he is fond of making money and offering loud opinions.

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  • Analoggrotto Analoggrotto on Apr 23, 2024

    Hyundai is the greatest automotive innovator of the modern era, you can take my word for it.

  • Shipwright Shipwright on Apr 23, 2024

    Great news for those down south. But will it remove internal heat to the outside / reduce solar heat during cold winter months making it harder to keep the interior warm.

    • Jeff Jeff on Apr 23, 2024

      Probably would not want this in colder climates but for the Southwest especially the desert this would be good. Don't need solar heat for most of the year in Arizona.


  • Bd2 Lexus is just a higher trim package Toyota. ^^
  • Tassos ONLY consider CIvics or Corollas, in their segment. NO DAMNED Hyundais, Kias, Nissans or esp Mitsus. Not even a Pretend-BMW Mazda. They may look cute but they SUCK.I always recommend Corollas to friends of mine who are not auto enthusiasts, even tho I never owed one, and owned a Civic Hatch 5 speed 1992 for 25 years. MANY follow my advice and are VERY happy. ALmost all are women.friends who believe they are auto enthusiasts would not listen to me anyway, and would never buy a Toyota. They are damned fools, on both counts.
  • Tassos since Oct 2016 I drive a 2007 E320 Bluetec and since April 2017 also a 2008 E320 Bluetec.Now I am in my summer palace deep in the Eurozone until end October and drive the 2008.Changing the considerable oils (10 quarts synthetic) twice cost me 80 and 70 euros. Same changes in the US on the 2007 cost me $219 at the dealers and $120 at Firestone.Changing the air filter cost 30 Euros, with labor, and there are two such filters (engine and cabin), and changing the fuel filter only 50 euros, while in the US they asked for... $400. You can safely bet I declined and told them what to do with their gold-plated filter. And when I changed it in Europe, I looked at the old one and it was clean as a whistle.A set of Continentals tires, installed etc, 300 EurosI can't remember anything else for the 2008. For the 2007, a brand new set of manual rec'd tires at Discount Tire with free rotations for life used up the $500 allowance the dealer gave me when I bought it (tires only had 5000 miles left on them then)So, as you can see, I spent less than even if I owned a Lexus instead, and probably less than all these poor devils here that brag about their alleged low cost Datsun-Mitsus and Hyundai-Kias.And that's THETRUTHABOUTCARS. My Cars,
  • NJRide These are the Q1 Luxury division salesAudi 44,226Acura 30,373BMW 84,475Genesis 14,777Mercedes 66,000Lexus 78,471Infiniti 13,904Volvo 30,000*Tesla (maybe not luxury but relevant): 125,000?Lincoln 24,894Cadillac 35,451So Cadillac is now stuck as a second-tier player with names like Volvo. Even German 3rd wheel Audi is outselling them. Where to gain sales?Surprisingly a decline of Tesla could boost Cadillac EVs. Tesla sort of is now in the old Buick-Mercury upper middle of the market. If lets say the market stays the same, but another 15-20% leave Tesla I could see some going for a Caddy EV or hybrid, but is the division ready to meet them?In terms of the mainstream luxury brands, Lexus is probably a better benchmark than BMW. Lexus is basically doing a modern interpretation of what Cadillac/upscale Olds/Buick used to completely dominate. But Lexus' only downfall is the lack of emotion, something Cadillac at least used to be good at. The Escalade still has far more styling and brand ID than most of Lexus. So match Lexus' quality but out-do them on comfort and styling. Yes a lot of Lexus buyers may be Toyota or import loyal but there are a lot who are former GM buyers who would "come home" for a better product.In fact, that by and large is the Big 3's problem. In the 80s and 90s they would try to win back "import intenders" and this at least slowed the market share erosion. I feel like around 2000 they gave this up and resorted to a ton of gimmicks before the bankruptcies. So they have dropped from 66% to 37% of the market in a quarter century. Sure they have scaled down their presence and for the last 14 years preserved profit. But in the largest, most prosperous market in the world they are not leading. I mean who would think the Koreans could take almost 10% of the market? But they did because they built and structured products people wanted. (I also think the excess reliance on overseas assembly by the Big 3 hurts them vs more import brands building in US). But the domestics should really be at 60% of their home market and the fact that they are not speaks volumes. Cadillac should not be losing 2-1 to Lexus and BMW.
  • Tassos Not my favorite Eldorados. Too much cowbell (fins), the gauges look poor for such an expensive car, the interior has too many shiny bits but does not scream "flagship luxury", and the white on red leather or whatever is rather loud for this car, while it might work in a Corvette. But do not despair, a couple more years and the exterior designs (at least) will sober up, the cowbells will be more discreet and the long, low and wide 60s designs are not far away. If only the interiors would be fit for the price point, and especially a few acres of real wood that also looked real.
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