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Tesla Model Y mishap shows urgent need for aggressively better quality control
Tesla currently stands at the top of the auto market, and for good reason. Its vehicles provide an experience unlike any other, their performance is incredible for their price, and their tech is top-notch. Yet as the company pursues its target of delivering 500,000 cars this year, something is becoming evident: Tesla needs to aggressively emphasize its quality control, especially with regards to the Model Y.
Just recently, EV enthusiast u/Indescribables shared a verified anecdote at the r/TeslaMotors subreddit, stating that their new all-electric crossover lost its glass roof while they were driving in California’s 238 highway. According to the Tesla owner, he and his dad started noticing some wind noise inside the cabin while they were driving. They initially thought that a window had been open, but before they could check, the Model Y’s entire glass roof reportedly got blown off.
After overcoming the initial shock of the incident, the pair drove back to the Tesla delivery center. Upon inspection, the manager at the Tesla location reportedly noted that the incident was caused by either a faulty seal on the glass roof, or someone from the factory forgot to seal the roof on. The new Tesla owners were then given a loaner as well as the option to repair or replace the Model Y. The pair declined a repair, instead opting to have the vehicle replaced.
So Tesla’s quality control is really bad. Our brand new model y’s entire roof just fell off from r/teslamotors
Granted, such an account is strictly anecdotal, but it does highlight a notable point of improvement for Tesla. As the company grows, after all, the electric car maker must make it a point to ensure that its quality control matches its pace of innovation. This ensures that every new Tesla owner gets to experience the same type of experience that has inspired such a strong and dedicated following for the company and its CEO, Elon Musk. This becomes challenging if some vehicles end up leaving the factory without being properly checked for potential build issues.
This is especially notable with this recent Model Y mishap, since Elon Musk himself has proven in the past that he is not content with Tesla making cars that have subpar build quality. During the middle of the Model 3’s “production hell” in 2018, reports were abounding that some vehicles being delivered to customers were not up to par in quality compared to the company’s previous cars like the Model S. Musk then sent a letter to Tesla employees calling for vast improvements in build quality. Musk’s intent was clear.
“We will keep going until the Model 3 build precision is a factor of ten better than any other car in the world. I am not kidding… Our car needs to be designed and built with such accuracy and precision that, if an owner measures dimensions, panel gaps, and flushness, and their measurements don’t match the Model 3 specs, it just means that their measuring tape is wrong,” Musk wrote.
Tesla Convertible???
The improvements in the Model 3’s build quality did not happen overnight, but once the company was able to get better, even legacy auto veterans could not deny that the all-electric sedan was being built with world-class standards. Longtime GM executive Bob Lutz, who is typically critical of Tesla, pretty much threw in the towel when he encountered a Model 3 in the wild. The following excerpt from a post Lutz shared on Road and Track explains his observations best.
“When I spied a metallic-red Model 3 in an Ann Arbor parking lot, I felt compelled to check it out. I was eager to see the oft-reported sloppy assembly work, the poor-fitting doors, blotchy paint, and other manifestations of Tesla CEO Elon Musk’s ‘production hell’ with my own eyes.”
“But, when next to the car, I was stunned. Not only was the paint without any discernible flaw, but the various panels formed a body of precision that was beyond reproach. Gaps from hood to fenders, doors to frame, and all the others appeared to be perfectly even, equal side-to-side, and completely parallel. Gaps of 3.5 to 4.5mm are considered word-class. This Model 3 measured up,” Lutz wrote.
What is rather interesting is that Tesla, especially the Model 3, enjoys widespread support from its consumer base. A thorough study from Bloomberg which polled 5,000 Model 3 owners found that buyers of the all-electric sedan were extremely happy about their cars despite the occasional cosmetic issue. Almost 99% of Model 3 owners remarked that they would recommend the car to friends and family. These are remarkable results, and it speaks volumes about the disruption that Tesla is really bringing to the auto market.
But the company could do better. Adopting a more aggressive quality control system is one way to do this.
Tesla has grown at a pace that is almost unprecedented, transitioning from a maker of premium cars like the Model S and Model X to a mass-market automaker that produces the Model 3 and Model Y in but a few years. With this transition came challenges, as evidenced in the well-documented “production hell” that Tesla experienced during the initial Model 3 ramp. The company has since overcome its quality issues with the Model 3, but it appears that the same pattern is somewhat happening with the Model Y’s ramp. This has to improve.
Considering the company’s goals, from its 1-million-vehicle-per-year target and more importantly, its mission, Tesla must simply not tolerate errors such as releasing a vehicle without proper glass roof sealant to delivery centers. These errors must be beneath Tesla’s Fremont plant at this point, especially since cars from the company’s China factory, Giga Shanghai, have been heavily praised for their build quality, as per data from Chinese quality complaint company CheZhiWang.
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Tesla hints at Starlink integration with recent patent
“By employing polymer blends, some examples enable RF transmission from all the modules to satellites and other communication devices both inside and outside the vehicle.”
Tesla hinted at a potential Starlink internet terminal integration within its vehicles in a recent patent, which describes a vehicle roof assembly with integrated radio frequency (RF) transparency.
The patent, which is Pub. No U.S. 2025/0368267 describes a new vehicle roof that is made of RF-transparent polymer materials, allowing and “facilitating clear communication with external devices and satellites.”
Tesla believes that a new vehicle roof design, comprised of different materials than the standard metallic or glass elements used in cars today, would allow the company to integrate modern vehicular technologies, “particularly those requiring radio frequency transmission and reception.
Tesla has recently filed a US patent application on integrating RF transparent materials into the roof structure.
“facilitating clear communication with external devices and satellites”
Tesla fleet is getting @Starlink connectivity integration soon. LFG @Tesla @elonmusk… pic.twitter.com/bLa8YtPLd1
— Chansoo Byeon (@Chansoo) December 9, 2025
Instead of glass or metallic materials, Tesla says vehicles may benefit from high-strength polymer blends, such as Polycarbonate, Acrylonitrile Butadiene Styrene, or Acrylonitrile Styrene Acrylate.
These materials still provide ideal strength metrics for crashworthiness, stiffness for noise, vibration, and harshness control, and are compliant with head impact regulations.
They would also enable better performance with modern technologies, like internet terminals, which need an uninterrupted signal to satellites for maximum reception. Tesla writes in the patent:
“By employing polymer blends, some examples enable RF transmission from all the modules to satellites and other communication devices both inside and outside the vehicle.”
One of the challenges Tesla seems to be aware of with this type of roof design is the fact that it will still have to enable safety and keep that at the forefront of the design. As you can see in the illustration above, Tesla plans to use four layers to increase safety and rigidity, while also combating noise and vibration.
It notes in the patent that disclosed examples still meet the safety requirements outlined in the Federal Motor Vehicle Safety Standards (FMVSS).
Starlink integrated directly into Tesla vehicles would be a considerable advantage for owners. It would come with a handful of distinct advantages.
Initially, the inclusion of Starlink would completely eliminate cellular dead zones, something that is an issue, especially in rural areas. Starlink would provide connectivity in these remote regions and would ensure uninterrupted service during road trips and off-grid adventures.
It could also be a critical addition for Robotaxi, as it is crucial to have solid and reliable connectivity for remote monitoring and fleet management.
Starlink’s growing constellation, thanks to SpaceX’s routine and frequent launch schedule, will provide secure, stable, and reliable internet connectivity for Tesla vehicles.
Although many owners have already mounted Starlink Mini dishes under their glass roofs for a similar experience, it may be integrated directly into Teslas in the coming years, either as an upgrade or a standard feature.
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Tesla supplements Holiday Update by sneaking in new Full Self-Driving version
It seems Tesla was waiting for the Hardware 4 rollout, as it wanted to also deploy a new Full Self-Driving version to those owners, as it appeared in the release notes for the Holiday Update last night.
Tesla has surprised some owners by sneaking in a new Full Self-Driving version with the wide release of the Holiday Update, which started rolling out to Hardware 4 owners on Friday night.
Tesla has issued a controlled and very slow release pattern with the Holiday Update, which rolls out with Software Version 2025.44.25.5.
For the past two weeks, as it has rolled out to Hardware 3 and older Tesla owners, the company has kept its deployment of the new Software Version relatively controlled.
It seems Tesla was waiting for the Hardware 4 rollout, as it wanted to also deploy a new Full Self-Driving version to those owners, as it appeared in the release notes for the Holiday Update last night.
Tesla Full Self-Driving v14.2.1.25 made its first appearance last night to Hardware 4 owners who are members of the Early Access Program (EAP). It appears to be a slight refinement from FSD v14.2.1, which has been out for a couple of weeks.
Tesla v2025.44.25.5 Holiday update incoming
Also Full Self-Driving v14.2.1.25!!! pic.twitter.com/74D7S0UGXz
— TESLARATI (@Teslarati) December 13, 2025
Many owners welcome the new FSD version, us included, because we’ve been less than impressed with v14.2.1. We have experienced some minor regressions with v14.2.1, especially with Speed Limit recognition, Speed Profile tinkering, and parking performance.
As it stands, Full Self-Driving is still particularly impressive, but Tesla is evidently having an issue with some of the adjustments, as it is still refining some of the performance aspects of the suite. This is expected and normal with some updates, as not all of them are an improvement in all areas; we routinely see some things backtrack every once in a while.
This new FSD version is likely to take care of those things, but it also includes all of the awesome Holiday Update features, which include:
- Grok with Navigation Commands (Beta) – Grok will now add and edit destinations.
- Tesla Photobooth – Take pictures inside your car using the cabin-facing camera
- Dog Mode Live Activity – Check on your four-legged friend on your phone through periodic snapshots taken of the cabin
- Dashcam Viewer Update – Includes new metrics, like steering wheel angle, speed, and more
- Santa Mode – New graphics, trees, and a lock chime
- Light Show Update – Addition of Jingle Rush light show
- Custom Wraps and License Plates – Colorizer now allows you to customize your vehicle even further, with custom patterns, license plates, and tint
- Navigation Improvements – Easier layout and setup
- Supercharger Site Map – Starting at 18 pilot locations, a 3D view of the Supercharger you’re visiting will be available
- Automatic Carpool Lane Routing – Navigation will utilize carpool lanes if enabled
- Phone Left Behind Chime – Your car will now tell you if you left a phone inside
- Charge Limit Per Location – Set a charge limit for each location
- ISS Docking Simulator – New game
- Additional Improvements – Turn off wireless charging pad, Spotify improvements, Rainbow Rave Cave, Lock Sound TRON addition
Tesla also added two other things that were undocumented, like Charging Passport and information on USB drive storage to help with Dashcam.
Tesla is updating Cybertruck owners on its timeline of a massive feature that has yet to ship: Powershare with Powerwall.
Powershare is a bidirectional charging feature exclusive to Cybertruck, which allows the vehicle’s battery to act as a portable power source for homes, appliances, tools, other EVs, and more. It was announced in late 2023 as part of Tesla’s push into vehicle-to-everything energy sharing, and acting as a giant portable charger is the main advantage, as it can provide backup power during outages.
Cybertruck’s Powershare system supports both vehicle-to-load (V2L) and vehicle-to-home (V2H), making it flexible and well-rounded for a variety of applications.
However, even though the feature was promised with Cybertruck, it has yet to be shipped to vehicles. Tesla communicated with owners through email recently regarding Powershare with Powerwall, which essentially has the pickup act as an extended battery.
Powerwall discharge would be prioritized before tapping into the truck’s larger pack.
However, Tesla is still working on getting the feature out to owners, an email said:
“We’re writing to let you know that the Powershare with Powerwall feature is still in development and is now scheduled for release in mid-2026.
This new release date gives us additional time to design and test this feature, ensuring its ability to communicate and optimize energy sharing between your vehicle and many configurations and generations of Powerwall. We are also using this time to develop additional Powershare features that will help us continue to accelerate the world’s transition to sustainable energy.”
Owners have expressed some real disappointment in Tesla’s continuous delays in releasing the feature, as it was expected to be released by late 2024, but now has been pushed back several times to mid-2026, according to the email.
Foundation Series Cybertruck buyers paid extra, expecting the feature to be rolled out with their vehicle upon pickup.
Cybertruck’s Lead Engineer, Wes Morrill, even commented on the holdup:
As a Cybertruck owner who also has Powerwall, I empathize with the disappointed comments.
To their credit, the team has delivered powershare functionality to Cybertruck customers who otherwise have no backup with development of the powershare gateway. As well as those with solar…
— Wes (@wmorrill3) December 12, 2025
He said that “it turned out to be much harder than anticipated to make powershare work seamlessly with existing Powerwalls through existing wall connectors. Two grid-forming devices need to negotiate who will form and who will follow, depending on the state of charge of each, and they need to do this without a network and through multiple generations of hardware, and test and validate this process through rigorous certifications to ensure grid safety.”
It’s nice to see the transparency, but it is justified for some Cybertruck owners to feel like they’ve been bait-and-switched.
Tesla hints at Starlink integration with recent patent
Tesla supplements Holiday Update by sneaking in new Full Self-Driving version
