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BMW PHEV: Safety fuse replacement is extremely expensive

submitted by mikela+(OP) on 2025-12-05 01:05:57 | 435 points 510 comments
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8. alephn+r9[view] [source] [discussion] 2025-12-05 02:29:50
>>jfoste+Y8
I wouldn't understate BYD, but Tesla did play a massive role in helping build China's domestic EV ecosystem because Tesla also worked on building a supplier ecosystem in China, which also helped incubate much of the Chinese ecosystem.

That said, BYD is outcompeting most other Chinese players as well, and it can be argued that this is due to the fact that BYD is also a private sector player unlike most of it's domestic competitors.

The only competitor in China that can compete against BYD is SAIC - an SOE owned by Shanghai's government.

That said, the EV glut has become a significant headache from a local government fiscal perspective - the majority of Chinese automotive companies are owned by state and local governments - a large number of whom ended up spending eye bleeding amounts of yuan on EVs despite no competitive advantage, and it's these state and local governments that are now increasingly holding the bag - which Chinese market regulators have increasingly raised red flags about [0] (and I myself foreshadowed on HN a couple times [1][2]).

[0] - https://www.bloomberg.com/news/terminal/T3V4AWMB2SJX

[1] - >>41275593

[2] - >>41275541

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14. dmix+3a[view] [source] [discussion] 2025-12-05 02:36:27
>>alephn+r9
China is also copying SpaceX's Starship https://arstechnica.com/space/2024/11/chinas-long-term-lunar...

Which is kind of exciting if you don't care about IP law.

Likewise their CR series/Fuxing high speed trains seem to be quite nice. They were spawned off their experience working on Euro/Japanese trains https://en.wikipedia.org/wiki/Fuxing_(train)

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26. alephn+5c[view] [source] [discussion] 2025-12-05 02:54:20
>>dmix+Lb
Household incomes are also much lower in China compared to Western countries. The kind of upper line BYD EV model that would appear to be a discount to a Western buyer is fairly unaffordable in a country where the median household incomes are around Yuan 2-3k (US$300-500) a month.

A US$15,000 car is equally as unaffordable for most Chinese just as a US$100,000 car is for most Americans.

Heck, the median household in China only spent Yuan 4k (~US$550) a year [0] on transportation and telecom (the Chinese government chose to club both into a single bracket) in 2024 - meaning at least 50% of Chinese households cannot afford the vast majority of EVs domestically sold in China.

[0] - https://www.stats.gov.cn/english/PressRelease/202501/t202501...

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31. TeeWEE+cd[view] [source] [discussion] 2025-12-05 03:06:27
>>jfoste+Y8
The BMW neue klasse is far superior to the latest Teslas.

Both in software hardware and handing.

https://youtu.be/P-H-GJaGiUg?si=eq8YWy8gyJ5YS99X

I think it even surpasses Chinese brands.

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33. bri3d+nd[view] [source] [discussion] 2025-12-05 03:08:17
>>jfoste+Y8
My understanding is that Tesla 16V LV batteries have a similar crash lockout in the BMS that also requires workarounds to reset: https://openinverter.org/wiki/Tesla_16v_li-ion_battery
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39. ishtan+kf[view] [source] [discussion] 2025-12-05 03:30:30
>>hnburn+zb
Bumping this. Mat went through the exact same crazy process with the Revuelto. Audi/Lamborghini overengineers the heck out of these cars its really absurd.

https://youtu.be/m37tN54FdQE?si=zXCnQTCOou13l10O

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66. radium+gk[view] [source] [discussion] 2025-12-05 04:36:00
>>rconti+Hj
The majority of their cars (Y/3 models) have the penthouse (top) of battery pack super easily accessible from under the back seat, no need to drop a pack.

Not to mention Tesla has the best service mode system in their computer of any brand of all time. They also have the best free to owners assembly/disassembly manuals in the service portal https://service.tesla.com/. They have taken self-service literally to the next level compared to anything I've ever driven ICE, Hybrid or EV and I've owned all of them.

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72. stonef+6m[view] [source] [discussion] 2025-12-05 05:01:20
>>cosmic+he
https://evmagazine.com/news/how-chinas-byd-is-using-ai-to-sc... , it's automation and vertical integration. It shows what was always possible if companies focused on product instead of stock buybacks. Fuck Jack Welch.
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74. pickle+ym[view] [source] [discussion] 2025-12-05 05:05:47
>>ethbr1+8i
They're talking about this I'm pretty sure!

https://www.telotrucks.com/

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75. nomel+Cm[view] [source] [discussion] 2025-12-05 05:06:31
>>8note+2f
Yeah, modern ICE is a massively complex control system problem, requiring so much more compute than EV, just to meet regulations.

Here's a funny example: the fuel vapor recovery system. It stores fuel vapors from the gas tank, that otherwise would have leaked into the air, in a canister of activated carbon. When under appropriate driving/environmental conditions, it opens valves and feeds the vapor into the intake stream, so it's burned.

[1] https://www.motor.com/wp-content/uploads/2024/07/Evap_0319-1...

Article: https://www.motor.com/magazine-summary/vapor-tales-understan...

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76. kens+Im[view] [source] [discussion] 2025-12-05 05:08:07
>>vjvjvj+Uf
That reminds me of the Popular Science garage hint from 1963, explaining how to easily dispose of used motor oil: Dig a hole in the ground and fill it with fine gravel. Pour in the oil, and it will be absorbed into the ground before your next oil change.

https://books.google.com/books?id=myADAAAAMBAJ&pg=PA166#v=on...

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78. CalRob+1n[view] [source] [discussion] 2025-12-05 05:13:19
>>mannyk+Fa
Maybe Slate? https://www.slate.auto/

A new 1980's mini truck would be awesome. If only...

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85. stefan+Eo[view] [source] [discussion] 2025-12-05 05:38:13
>>kens+Im
Different times indeed.

The Swedish government created this informational video in 1964 on how to properly dispose of your trash when at sea https://www.youtube.com/watch?v=t03saJVFkv4. Apparently the trick is to make the trash sink rather than float.

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87. CyberD+Mo[view] [source] [discussion] 2025-12-05 05:40:17
>>inferi+oi
From what I can tell the Chinese are targeting the bottom of the market with cars that are essentially disposable.

What actual information or data leads you to believe this?

All wheel drive, 375mi range and sub 4 second 0-60mph is disposable to you? I'm guessing your car is disposable by comparison.

https://www.byd.com/us/car/han-ev

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141. oskark+jy[view] [source] [discussion] 2025-12-05 07:42:28
>>nandom+vv
I've searched the internet and I found some articles and people talking about prices around $11-16k, most of the times including labor.

https://teslamotorsclub.com/tmc/threads/new-battery-cost-for...

https://www.reddit.com/r/TeslaLounge/comments/183if34/what_i...

https://www.reddit.com/r/TeslaModel3/comments/1blczt1/what_a...

https://www.recurrentauto.com/research/tesla-battery-replace...

https://www.findmyelectric.com/blog/tesla-model-3-battery-re...

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149. tpm+jz[view] [source] [discussion] 2025-12-05 07:53:33
>>mvkel+cu
EV Clinic identified some issues in Teslas too, for example this one: https://x.com/evclinic/status/1994876173277335745
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155. ThePow+AA[view] [source] [discussion] 2025-12-05 08:03:30
>>CraigJ+is
>Tesla is remarkably well done. Simplicity is under rated.

https://electrek.co/2025/12/03/tesla-model-y-named-worst-car...

>So much so i bought one with the intention to keep for a looooong time.

Good luck with that.

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161. Tade0+dC[view] [source] [discussion] 2025-12-05 08:17:45
>>JSR_FD+07
In terms of (unnecessary) complexity of modern ICE cars the Car Wizard has a few words that might interest you:

Title of the clip: Why does it cost over $4K to replace a simple $50 gasket?

https://www.youtube.com/watch?v=YJMWvyDP3j8

It's not an EV issue. It's a modern car issue.

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182. tpm+MJ[view] [source] [discussion] 2025-12-05 09:04:54
>>Archel+jb
What they mean by the EU-bashing is two things:

1. The EU de facto mandates the car manufacturers have to develop and sell cars that produce less CO2 (mostly by the way of fines for higher polluting vehicles). This led to the development of hybrid ('mild-hybrid', 'full-hybrid', and PHEV) and EV vehicles.

2. The manufacturers tend to both complicate the technology and lock the stuff down, so it's not easily repairable. This has its own enviromental price, and EV Clinic says this is not accounted for. That's not completely fair as on one hand there are EU repairability directives that address this but on the other we still want to have some degreee of market competition and in the end the market should punish those manufacturers (as it is already doing, I think).

One thing I want to add is that the EU also mandates real-world-fuel-consumption-measurement (OBFCM) devices in new cars and if that is followed to its logical conclusion and the manufacturers pressure is resisted, this will mean the end of hybrids as the real-world data is horrible for them.

https://zecar.com/reviews/plug-in-hybrid%27s-real-emissions-...

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198. jacque+uS[view] [source] [discussion] 2025-12-05 09:36:26
>>0_____+pa
Wait until you see a picture of a clutch replacement on an R1200... this should probably have a NSFW tag attached: https://www.reddit.com/r/motorcycle/comments/1he20rk/r_1200_...
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280. close0+Ml1[view] [source] [discussion] 2025-12-05 13:11:34
>>jinzo+631
> Yes, as changing a tire is completely the same tool-and-knowledge level than repairing a EV Battery.

I think you are intentionally misrepresenting this and moving the goalposts to make your point. GP blamed safety and liability for the way the process looks like, not the complexity of the task. When it comes to safety you bet that an improperly installed or inspected wheel or tire can be dangerous.

A short internet search tells me [1][2] that some sort of tire malfunction causes tens of thousands of accidents and kills hundreds of people every year in the US alone. That doesn't include wheel malfunctions (e.g. wheel coming off). Yet this isn't locked behind some manufacturer approval and proprietary tools.

How BMW chose to approach this is profit driven. The old money printing machine from ICE maintenance, repairs, and spare parts is slowing down so they come up with new ways of extracting money. Like making the lives harder and more expensive for any non-BMW shop to do repairs. They're not alone in this, other brands do the same.

> If you would see how EV Clinic "repairs" Tesla batteries, you would not say they have any concern for liability.

More moving of goalposts mixed with not understanding what liability is, and where it belongs. So you tell me what's Tesla's liability when EV Clinic "repairs" a battery.

[1] https://www.smithlawcenter.com/practice-areas/defective-tire...

[2] https://www.safetyresearch.net/nhtsa-gets-real-on-tire-fatal...

295. mystra+Ks1[view] [source] 2025-12-05 13:50:25
>>mikela+(OP)
At this point, when I look at ANY electric vehicle, I'm seeing basically what Richard Stallman and Cory Doctorow warned about.

Its a DMCA DRM hellscape, full of equipment that was sold (with a state registration no less), and these car companies still maintain remote control and real ownership indefinitely.

Mercedes EQS won't "let" owners open the hood.

BMW "rented heated seats" bullshit.

GMC Hummer EV Requires dealer-level authentication to reset the 12V battery or perform certain repairs.

Tesla uses proprietary diagnostic tools and encrypted software.

Volvo has explored payment-based bricking.

Even the EFF warned about this 12 years ago in 2013 : https://www.eff.org/deeplinks/2013/11/drm-cars-will-drive-co...

Will I consider an EV? Sure. Am I going to place primary buying decision on reparability and full ownership? Damn straight I will. If that means I buy hybrids and/or ICE vehicles. I want something I can maintain without running to the vendor to ask permission, or even "giving" them the ability to say no.

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297. nake89+Tt1[view] [source] [discussion] 2025-12-05 13:55:49
>>dzhiur+w21
Out of the Privacy Not Included list of car manufacturers it is the third not-worst: https://www.mozillafoundation.org/en/privacynotincluded/cate...

It is still very bad: https://www.mozillafoundation.org/en/privacynotincluded/tesl...

Overview: https://www.mozillafoundation.org/en/privacynotincluded/arti...

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350. torgin+pZ1[view] [source] [discussion] 2025-12-05 16:13:07
>>gambit+vR1
This reminded me of the video about the Tesla door handles, where its explained how they redesigned the retracting door handles of the Model S from having a bunch of switches and mechanical parts to just a motor + a position sensor:

https://www.youtube.com/watch?v=Bea4FS-zDzc

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358. Gravit+U12[view] [source] [discussion] 2025-12-05 16:22:28
>>prepen+fJ1
Porsche had a research program about a very reliable car in the 70s. It has some odd technical choices from today's perspective. https://www.hagerty.com/media/automotive-history/when-porsch...

One would assume taxi companies etc would be willing to pay for cars that have high uptime and reliability. But I think they drive mostly the same stuff as regular people. At least one would assume they could get beefier suspension and transmission and high displacement downtuned engines.

In general new cars are still vastly better than old ones. 90:s cars rusted from everywhere after ~8 years while most cars nowadays have zinc coating and more plastic and are still mostly fine after 15 years.

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359. Analem+V12[view] [source] [discussion] 2025-12-05 16:22:29
>>jlaroc+kS1
BMW has been the worst of the worst for a long time though. [0] is a representative example, but pretty much any "car brands ordered by upkeep cost" list will have BMW out on their own planet.

Before Teslas really took over the "high income tech worker" market, in Seattle you used to be able to get a used BMW for quite cheap, because all the Microsoft and Amazon workers would lease them and then they'd go on the used market when the lease was up. I actually considered doing this, but multiple mechanics said very bluntly, "don't, this is a trap, the maintenance costs will eat you alive".

[0]: https://www.crsautomotive.com/what-are-the-total-costs-of-ve...

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370. giamma+Qa2[view] [source] [discussion] 2025-12-05 17:00:12
>>potato+PL1
Here is an American example, Fox suspensions. Fox is one of the main producers of bicycle suspensions. Great products, but check their service intervals for a fork [0], 125 hours.

Now if you practice mountainbike you may ride your bike 1 to 5 times a week. Let's say you only ride once a week for 4 hours: 125 / 4 = 31, you would need to service your fork every 31 weeks. Add some few more rides and you have to service the fork twice a year.

Each service easily costs $150 if done by a bike shop. If you do it yourself (plenty of tutorials on youtube), you need expensive special tools, oil, special grease and spare o-rings and seals easily costs 30-40$ for every service. And you have to properly dispose the old oil.

[0] https://tech.ridefox.com/bike/owners-manuals/2979/fork--2025...

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371. torgin+db2[view] [source] [discussion] 2025-12-05 17:01:55
>>inferi+fp
https://www.youtube.com/watch?v=XVA3dkuiNE8

Here's 2 Korean mechanics reviewing a BYD. They seem pretty impressed.

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373. justin+nb2[view] [source] [discussion] 2025-12-05 17:02:53
>>jlaroc+kS1
I watch "The Car Care Nut" sometimes, as I've got a Toyota. Nothing I've ever seen there would lead me to put Toyota into the same maintenance cost/difficulty category as BMW or Mercedes.

Consumer Reports puts them at almost opposite ends of the spectrum, as well.

https://www.consumerreports.org/cars/car-maintenance/the-cos...

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408. bdangu+Cr2[view] [source] [discussion] 2025-12-05 18:13:34
>>l1tany+Li
2025: https://www.kbb.com/tesla/model-s/2025/

2014: https://www.kbb.com/tesla/model-s/2014/

If this was like “find 5 differences game” you’d lose :-)

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410. Errone+4s2[view] [source] [discussion] 2025-12-05 18:16:45
>>hnburn+zb
Meanwhile, if you work on old Landrovers from the Defender 90/110 to early RR L322, you need this: https://rangerovers.pub/downloads/rave.zip (500MB zip, PDFs of all service and user manuals).

Even if you don't work on them, grab yourself a copy. You never know when you might need to know how to rebuild a Borg Warner transfer box or ZF 4HP24 gearbox.

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413. bradyd+vA2[view] [source] [discussion] 2025-12-05 18:52:33
>>giamma+Qa2
That service interval is pretty common across all bike suspension forks (and dropper posts are usually only around 50 hours).

A SR Suntour fork has a 100 hour maintenance interval, for example.

https://www.manualslib.com/manual/3730626/Sr-Suntour-Durolux...

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422. Beijin+IG2[view] [source] [discussion] 2025-12-05 19:17:07
>>JSR_FD+07
" power imbalance that comes from this amount of complexity."

Look what happened in Russia:

https://www.autoblog.com/news/all-of-russias-porsches-were-b...

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441. iknows+4X2[view] [source] [discussion] 2025-12-05 20:40:47
>>wil421+vz1
They last longer than ICE cars.

https://www.teslarati.com/tesla-leads-vehicle-longevity-mile...

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443. torgin+L13[view] [source] [discussion] 2025-12-05 21:02:24
>>nights+an2
Not according to eurostat:

https://ec.europa.eu/eurostat/statistics-explained/index.php...

https://ec.europa.eu/eurostat/statistics-explained/index.php...

The theory that Greeks work more hours because less of them work in total doesn't line up with the numbers.

But if we pick Poles instead of Greeks, they have a similar level of employment to Germany while working just as many hours as the Greeks

445. Fwirt+L33[view] [source] 2025-12-05 21:12:36
>>mikela+(OP)
I keep mulling over decisions like this, and I think the fundamental clash between the hacker ethos of repairability and the corporate ethos of products with well-defined failure modes comes down to a clash of innate human values with capitalism.

Capitalism fundamentally does not view human life as sacred. Or rather, it puts a finite value on human life. The bond between a mother and son is priceless, there is (in the case of a loving relationship) no price that either would put on the life of the other. That is to say, there is no amount of money that either would accept in exchange for the death of the other. As actuaries know, this is not true from a capitalist viewpoint. The value of a human life is frequently calculated by various means to be somewhere around 3.5 million dollars at birth. Which is to say, if a policy change costs an organization (private or public) over 3.5 million dollars to save one human life, it does not make financial sense. So when you look at a decision by an automaker to include a "safety" feature, you have to ask "did the amount of money that this costs the company work out in terms of human lives". In this case, BMW likely concluded that the financial damages of settling an insurance claim for a battery fire, and damage to their brand from the massive negative publicity of battery fires (see Tesla) would be more than the cost of implementing this "feature". This is also true from the legally mandated standpoint of crash safety features, which result in cars being much easier to total because of crumple zones. The cost of a $100k vehicle is much less than the cost of a $3.5 million human life. On the other hand, the carbon and pollution cost of replacing many $100k vehicles is borne by the public. An interesting view of this topic is summarized in the Wikipedia article "Value of Life" under the heading "Uses", which specifically covers the cost of implementing emissions regulation vs. the cost of the human lives that reduced emissions would save. https://en.wikipedia.org/wiki/Value_of_life#Uses

As has been pointed out many times, vehicles these days are cost engineered to last as long as the average buyer of a new vehicle will hold onto the car. Since BMW targets a luxury market, that lifetime is likely on the order of 4-5 years. A Toyota is probably closer to 10 years. Automakers do not (as far as I know) make a meaningful amount of money on the maintenance of used cars; OEM parts do not necessarily come directly from the automaker, but rather a company that contracts with them or a subsidiary whose financials are not counted as part of the manufacturer's bottom line. Therefore, in our modern era of late-stage capitalism, companies have no incentive to make cars that last longer, and complaints from customers who wish that their end-of-life cars were easier to repair will fall on deaf ears. Those of us who wish our cars were less "safe" in order to contribute less to the criminal waste of disposal of otherwise sound vehicles and carbon cost of making a new vehicle would do well to consider the financial calculations that went into those decisions. Is making batteries that are easy to fix but kill someone when improperly repaired in 1/1000 crashes more ethical than installing systems to prevent batteries from ever being misconfigured? Are there more BMW crashes than other brands due to the target demographic? Is the number of batteries that will be repaired improperly significant enough to cause a large number of battery fires? I don't know.

This is by no means an excuse of these practices, but merely an attempt to understand them. I would love to hear where my reasoning is flawed so I can better understand this. It certainly seems to me that the risk of a shade tree mechanic soldering a piece of wire into a BMW battery computer is astronomically low, but I have seen repairpeople of all shades do really stupid things to save money so probably not zero.

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461. bombca+sg3[view] [source] [discussion] 2025-12-05 22:23:41
>>SoftTa+7e2
There was an era where Mercedes were insanely easy to work on, with the detail you’d expect from unleashed German engineers.

I didn’t know the 123 hood folded all the way back until near the end of having one!

https://www.classiccarstodayonline.com/2022/04/22/mercedes-1...

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464. tw04+4j3[view] [source] [discussion] 2025-12-05 22:38:53
>>cromka+Ty
> Different cars with different targets.

The head of the product disagrees with you. No offense but I think he has a slightly better idea of their target buyer than you.

>AW: How much was Tesla on Porsche’s mind when the Taycan was produced? It seems like you’re going right after Model S with this car.

>SW: The first target for ourselves was to make sure that the Taycan becomes a Porsche. We needed to make it as close to the 911, our icon, as possible. Obviously, we had a look at the competition, we had a look at BMW, Mercedes, Tesla.

https://www.autoweek.com/news/people/a2157176/talking-taycan...

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470. Crimso+Ul3[view] [source] [discussion] 2025-12-05 22:57:38
>>jacque+6S
It is not a big deal. Just burnish it once every few months when it makes high pitched sound during low speed braking. https://service.tesla.com/docs/Public/diy/model3/en_us/GUID-...
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478. slaw+Xs3[view] [source] [discussion] 2025-12-05 23:49:05
>>harral+4k2
> reuse parts down to the ancillary components of a vehicle, from the battery packs to the heat pumps and motors inside the car seats

https://www.businessinsider.com/tesla-byd-jon-mcneill-chines...

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499. dzhiur+oi5[view] [source] [discussion] 2025-12-06 19:33:31
>>Beijin+NJ4
#12 according to CR

https://www.consumerreports.org/cars/car-reliability-owner-s...

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