If you’re considering purchasing a vehicle with a panoramic roof, think again

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by BRIAN TURNER | 2 DAYS AGO

The venerable Consumers Reports recently published a study done on sunroof glass failures, with special attention being paid to panoramic panels. These events, according to owner statements, almost always occur without warning and are accompanied by a large noise, followed by a shower of glass shards.

The U.S. National Highway Traffic Safety Administration (NHTSA) has received almost 900 consumer complaints since 1995 on this topic, with 71 per cent of them coming in since 2011. No automaker seems immune, as 208 models from 35 brands make up the files.

In the majority of cases, according to Consumer Reports and the NHTSA, owners are told that the breakage isn’t covered under warranties, but instead must have been a result of foreign object impact leaving consumers to foot some very large bills.
Currently only one vehicle, the 2011 to 2013 Kia Sorento is under an NHTSA review, while Kia is only fourth on Consumer Reports‘ list of the brands with the most reports on exploding glass panels.

The issue stems from more and more vehicle models being equipped with large, curved glass panels that take up almost all of the roof area. These sheets of glass are subjected to body flexing, extreme temperature ranges, and of course, impacts from road debris kicked up by other vehicles. As they are made from a type of automotive safety glass, instead of cracking, they explode into small fragments all at once. Read more...
 
This leads to the question of what keeps passengers from being ejected through the roof in the event of a major collision or rollover – if they’re not properly belted in or if a restraint fails.


I agree that this sucks from a consumer cost perspective, and the difficulty for owners to distinguish between (and prove) body flex versus foreign object impact puts them at a disadvantage, but I have two comments specific to the safety concerns:
  • Side windows aren't generally laminated either, so this ejection concern is not unique to sunroofs. Even if they were, I doubt a laminate applied to a structurally compromised window could ever be "rated" to prevent ejection.
  • If the occupant isn't belted/restrained, then all bets are off anyway. No manufacturer could guarantee cockpit safety, and they wouldn't be held liable either.
 
a laminate applied to

"Using laminated glass" in this context likely refers to windshield type glass, which as you know is quite different from the glass in the doors, which is pre-stressed. As the pre-ordered Stinger does come with a sunroof, I will have it tinted to keep at least the glass from flying all over, should something happen as described above.
 
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Yes, I would definitely tint this glass. 100%. This will help keep the shattered glass from flying all over the inside of the car while you're driving. It wouldn't hurt to use a good, thick tint. Keeping that sunshade fully extended over the window most of the time is also a good idea. Even I, with only a moonroof, usually keep my sunshade covering the glass as I typically like privacy in my car. But I do occasionally cruise around at night with the sunshade back and moonroof opened...

As for flying out the window after a glass-breakage - wear your seat belt...
 
Totally agree that laminate (tint or safety glass) would be hugely helpful when the breakage occurs. I was just saying it would have little impact in a rollover, and the proof is that there's no shortage of examples of unbelted occupants ejecting through safety-glass windshields. The laminate has nothing to do with how the glass panel is mounted to the vehicle structure, so it's not capable of serving as a barrier during a significant event.
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
This is an old topic and it was around the first batch of Velosters that were released that I heard of it. It was a manufactured issue (poor quality silicon or something like that) and immediately rectified. I had no issue with my panoramic, thankfully I had a turbo which came out after this incident. I wouldn't read to much into this and from the 3 or 4 incidents with the Veloster that I read about, Hyundai did cover the replacement of those that broke.
 
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