I have had my first year of a C8 for over 2 years and not a single problem. Goes to show you cannot believe everything you hear. I also don't believe Consumer Reports stories which many are contrived.

 

Awesome...keep us posted...good luck!

 

As a former manufacturing engineer and also Quality manager, I can assure you that it is possible to not have the first few or more (many more in the case of my 2001) years of buyers act as testers for the company. Heck, you should get paid for doing this.

Why can a large number of Lexus, Toyota, and Mazda models be released without any issues? As long as buyers accept being testers without compensation, we can expect new models to be frustratingly buggy for years to come.
If a component (sensor, seat, transmission) is made by an outside company, then that company should be told that any failures will require an analysis report that includes a solution of improvement. Subsequent failures would then result in a vendor/supplier change.

 

“If a component (sensor, seat, transmission) is made by an outside company, then that company should be told that any failures will require an analysis report that includes a solution of improvement.”

It’s called an 8D, has been in existence for about 40 years and is in every automotive Supplier Agreement (Contract). Google it. Ford 8D

“Subsequent failures would then result in a vendor/supplier change.”

My gosh, have you EVER read an automotive supplier agreement? If you meant “change” it’s called Termination For Cause. Of course, it takes about 1 to 3 years to source and validate (test) a new supplier and part.

If you meant “charge” it’s called Damages (ask Takata about that. Wait, they are bankrupt because of the airbag defect.)

https://www.consumerreports.org/car-...w-a1060713669/


https://www.toyota.com/recall/takata

https://www.kbb.com/lexus/recall/

https://www.mazdarecallinfo.com/?semid=CR-SEM05000&servicetag=CR-SEM05000&k_keyword=mazda%20airbag%20reca ll&k_matchtype=e&gclid=Cj0KCQiAn4SeBhCwA RIsANeF9DIJmBkL76T6kADfW8uWZ2HU7YetLa10L TmxuLJLFSpxDF2JxyjfcYYaAuKAEALw_wcB

 

I find it very hard to believe that after three years of testing, components all of a sudden start failing. Again, why is it that so many Japanese vehicles have zero problems for 10+ years? How many Mazdas and Toyotas/Lexus have you owned. I've worked with Japanese engineers and understand why their companies don't rush to release their products. Of course there are exceptions here and there but almost never like GM's products.
I'm willing to bet that if GM were to use all Toyota electronics, cables, and connectors, as well as engines, transmissions, and power retracting hardtops, there would be far fewer issues than what we are seeing in this forum.

 

There is also the reality of Defects In Design vs Defects in Manufacturing. The point is that a perfectly designed component that passed all of the maker’s validation requirements is still subject to manufacturing variations and defects. Of course you know that as an automotive supplier.

See earlier posts about my tier one supplier creds. But this is not about me or you.

The internet knows all.

https://www.kbb.com/toyota/recall/

https://www.kbb.com/toyota/recall/

https://www.kbb.com/chevrolet/recall/

Statistics and probabilities combine to be our reality.

Getting a little raw here…“I find it very hard to believe that after three years of testing, components all of a sudden start failing.”

The last report I read says that 67 million Takata airbags were manufactured, 400 people were injured and 23 persons were killed. I am sure these airbag designs were thoroughly validated by the 16 plus auto makers that sourced them and have had to implement recalls. Very sad story.

I worked with Takata and Lexus on a much less critical component than an airbag. I know their combined design, validation and manufacturing quality processes. Top notch, but not a world apart from GM, MB, Porsche etc.

Based on my professional experience and the data available to all of us on the internet, I would never claim any maker has 10+ years of defect free product. Of course, I do own five different GM vehicles that I would characterize as defect free. Just lucky, I guess.

 

Yep! Bought a fully loaded 2020 Tacoma TRD sport brand new. Zero issues in 26k miles. My brand new 2023 corvette is sitting at the dealer getting a new oxygen sensor with only 190 miles on it.

 

I will no longer post or reply to posts that do not speak to specific C8 issues, concerns or defects experienced by C8 owners.

Non-substantiated remarks about various auto maker’s quality processes, personal opinions (including mine) and personal professional experiences (including mine) are not relevant to the C8 owners that are seeking factual information and consolation via this forum.

For the record, my 2020 HTC Z51 with front lift is working fine. We had rain today in metro west MA, so the salt is gone! Going for a ride as soon as the roads are dry tomorrow!!! Zoom zoom!

 

That doesn't surprise me at all. Our 2006 Lexus RX400h (purchased in 2005) is loaded with plenty of high-tech electronics and has not had a single issue related to electronics or powertrain for almost 18 years. But yes, these are single data points but at the same time anyone who gets CR can look back over 30 years and see the vast difference in reliability ratings between Toyota/Lexus and Mazda compared to all American and German vehicles.
I really want American auto companies to do well but for some reason, they just can't compare when it comes to reliability.

 

Two samples of one! Sell your lemon C8 now to me! $25,000, take it or leave it. I have a 2012 Tahoe with 145,000 miles. Random, random, meaningless.

https://www.kbb.com/toyota/tacoma-double-cab/2020/recall/

 

I was responding to this comment:
But yes, please continue to address the hundreds of issues and hope that the core reasons for them are fixed, permanently.

 

Minor stuff, I guess so don't worry about it.
Catergory reliability, Consumer Reports

 

Tapping out, tired of this.

 

Could you please stop disrupting this thread with your off topic posts. You don't even own a C8 and all you are doing on this thread is bashing GM even though many folks have asked you to stop. This thread is about owners reporting issues in an attempt for the Corvette community to help them, and not about GM bashing. Can we please get back on topic.

 

Dave68 is so full beyond full of BS it's unbelievable.

Apparently, ALL Euro and Japanese/JDM cars are pooped out of their factories with NEAR PERFECTION! Everything goes great, even on new engine designs!
I run into quite a few of these anti-american auto snobs that think every car that is NOT American made is pure gold. Maybe we have Lee Iococca and the ReliantK / Pinto to blame for this effect, or the rich Corinthian leather didn't hold up to all their bowel movements?

We can circle back to reality and just look at one Euro manufacturer. Audi's EA engine line is NOTORIOUS, and I guess they didn't get the memo from Dave68 that those engines should be PERFECT on day one, because they have like FIVE generations of the same engine and each generation fixed an older serious problem, only to introduce new problems.
http://www.audicomplaints.com/tagged/engine/

Normally, I would say Toyota has a pretty good reputation for reliability. Look at the Corolla and Camry vehicles, teenagers beat the crap out of them and they keep running (haven't changed much either), but apparently they also didn't get Dave68's engineering perfection memo when they produced the 6-cyl engine for the RAV4 sport. You see, someone failed to do nth degree finite element analysis on all aspects of the engine and thought a "cost saving" plastic tube for the dipstick was a good idea, and of course these fractured right away and broke off which somehow lead to the all the oil dumping out onto the highway and the engine seizing up rather quickly. Apparently they also failed to test the serpentine belt tensioner which put too much stress on the water pump and caused numerous water pump bearing failures. Oops, shoulda called Dave68. Adding insult to injury, the beloved and peppy RAV4 6cyl engine failed to live up to the longevity of it's teen inspired cousins as the DOHC engine had serious problems with timing chain failures at less than 100k miles, sometimes before 60k. Whoops! The all-electric power steering also fails within the first year or two.
https://www.motorbiscuit.com/toyota-...-avoid-buying/

Apparently these "imperfect engineering" problems apply to aviation as well. The venerable McDonnel Douglas F-16 was known as the "yard dart". Problems with wire chaffing were only later discovered. But, thanks to continuous improvement, these issues were resolved. Aeronautical engineering is a great example where lessons are continually learned and then baked into new products. Safety wire for instance. Nitinol wire, PTFE wire insulation for high temp applications, etc. Boeing needs to talk with Dave68 though, they have been slipping lately.

Full disclosure, I do engineering work, and I have personal experience with the 2007 RAV4, Audi A/Q series, and don't get me started on the BMW Z4 (they actually engineered parts to fail which is the only conclusion I can come to, damn near criminal).

Back to topic, my C8 has had a number of problems (listed mine here already), but thankfully most are trivial, cosmetic, and/or didn't prevent me from pressing the zoom pedal and accumulating 11k smiles.
The cost / performance / aesthetics value proposition that was delivered by GM with this car is phenomenal IMHO.

 

It has has nothing to do with national origin. As you said, Audi/VW has issues with their engine but as your own post says, they are trying hard to correct the issue. They have 5 gens of same motor with continuous improvement. As long as the manufacturer makes a legitimate and honest effort to improve the flaws in their product, that's all you can ask, really. I think what people are complaining about GM though is that they do not do that or if they do, it's minimal. I have no past experience with GM products so I can't speak, I am just observing the dct saga unforld. Jury is still out.

 

This thread should be about c8 problems. What does lexus,mazda, renault or any other makes' reliability have to do with c8 problems.
If you're posting your opinion about quality or reliabilty, post it elsewhere. Start a new thread. If the post is not specifically about c8 problems, you're wasting our time and disrespecting us.

 

 

Apparently, there is a new maintenance schedule for C8 Corvettes.
Every 7,500 miles - replace your transmission.

I am now waiting for transmission #3 for my 2021 HTC Z51 Corvette!

Not the "Experience" I expected with the mid-engine Corvette.

 

Realizing my penchant for going postal I should hold off purchasing this potential trigger.


Edit: Just now got the call, what to do. I will not hold-up this dealer and need to make a decision by the end of the day.