This is well informed and correct. Understand this if you buy a new ICE vehicle: the drive train is uneconomic to repair out of warranty: do not imagine you'll keep it long term or hand it off to a kid or whatever.

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potato3732842 2 days ago | parent | next [-]

Costs drop like a rock once vehicles get old enough that they can't be financed, which means dealers won't sell them, which means they won't be bundled with 3rd party warranties and service plans, which means that the owner will be the one paying and there's actual pressure to control costs (because the owner has no party down the line to pass costs onto).

For example, for the longest time Nissan CVTs were "nonrebuildable, send it back and buy a reman" now any idiot can rebuild one for under a grand in parts.

4L60 and E4OD rebuilds were also $$$ for a long time now they're dirt cheap too.

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topspin a day ago | parent [-]

I wouldn't cite the 4L60E in this argument. It's an ancient design, as Wikipedia puts it, "The 4L60E is the electronically commanded evolution of the Turbo-Hydramatic 700R4, originally produced in 1982." The 700R4 is a THM350 from 1969 with an additional overdrive gear.

I'm not writing about 50+ year old platforms, around which a huge market of suppliers and technicians has evolved. The ICE transmissions GM sells today are vastly more complex, with zero design commonality with the classic stuff, and enjoy none of the benefit of long adoption that make the classic stuff cost effective. Further, and this is the important part, because the lifecycle of everything ICE is much shorter now, measured in years as opposed to decades, they never will.

So ten years from now, when your circa 2020 10L60 dies, there won't be a transmission shop in every town that's equipped and stocked to deal with it cheaply. The cost will be greater than the value of the vehicle. And that's my point: these vehicles are not going to be economic to operate out of warranty.

	▲	potato3732842 20 hours ago \| parent [-]
		>It's an ancient design My ass. You can trace all these designs back forever. It's more "inspired by" than actual incremental revision in most cases. There is just about nothing but some vague shapes that look similar and maybe some bolt lengths that are common between a 4L60 and the TH350 era stuff. >Further, and this is the important part, because the lifecycle of everything ICE is much shorter now, measured in years as opposed to decades, they never will. The average car on the road is lasting longer as the years go on. People said the same things when fuel injection came out. >So ten years from now, when your circa 2020 10L60 dies, there won't be a transmission shop in every town that's equipped and stocked to deal with it cheaply. The cost will be greater than the value of the vehicle. I'll take that bet. Modern transmissions are stupidly easy to rebuild from a skills point of view because they replace all sorts of mechanical adjustment with "hurr hurr we just PWM the solenoid to make it go BRRT and if the BRRT is too rough the computer algorithm will turn it down". Yeah there's more components, but those are easi.

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chasd00 2 days ago | parent | prev [-]

> do not imagine you'll keep it long term or hand it off to a kid or whatever.

i don't agree, my friend has been driving the same Toyota LandCruiser for 20 years. I will have no problems handing my 2016 4runner down to my kid who turns 16 this December. The 4runner will last another 10 years easy.

	▲	topspin 2 days ago \| parent [-]
		> Toyota LandCruiser for 20 years Respectfully I specifically wrote "new." 20 year old SUVs predate the issues of new vehicles. > my 2016 4runner Even a 2016 vehicle predates what I'm pointing out. A 2016 4runner likely has a 270hp naturally aspirated V6 with modest power and a relatively basic 5 speed auto transmission. A 2025 4runner is a turbo charged 4 cylinder making nearly 2hp/cu in. and an 8 speed transmission. The former is much simpler and thus economic to maintain and repair compared to the latter. ICE vehicle drivetrains have changed radically in only the last few years. They're almost universally using forced induction, integrated into unserviceable castings, to attain far higher volumetric efficiency, equivalent to high performance engines of not long ago. Gone are the 4-5 speed transmissions and transaxles: 8-10+ speed is the norm, and the complexity follows here as well. They are absolutely intolerant of neglect and abuse. Repairs are complex and likely to fail: manufacturers have taken to replacing major assemblies in leu of attempting repairs as they would have in the past. Part of that is due to the unserviceable nature of these components. Another part is the lack of dealer talent to deal with their own products. Another part is that the manufacturing lifecycle of major assemblies is now extremely short: only a couple years, whereas 10+ years was normal for common platforms as recently as the the 2010s. What this means is: when these new products are no longer supported by manufacturers, who will drop their supply obligations rapidly as they legally can due to short lifecycles, parts will be fabulously expensive and difficult to obtain and the skills and tools necessary to repair them will be rarified and also expensive. Post-warranty ICE vehicles will be uneconomic, full stop.