GLC Class (X253) Produced 2016-2022

Piston issue----Extended MB warranty options....

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Old Sep 14, 2021 | 11:58 AM
  #1  
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Piston issue----Extended MB warranty options....

We have a 2018 GLC300 perfectly optioned and absolutely love the truck. Its used gently by my wife as a soccer mom car with highway and in town use trips to the gymnasium. Been reading about this piston cracking issue and am pretty pissed about it. Figured a later truck all the bugs would be out. Have not had one issue with the truck. Don't know enough info yet if its a certain vin number batch, overblown, or a time bomb we are all facing with this motor. ??? Not a good market to trade into and as I said we would be hard pressed to find a similar certified truck. So considering an extended warranty. Our warranty expires 10/2021 and the certified warranty then goes till 10/22. Does the warrany need to be bought before the normal warranty expires or can we wait into the certified warranty?? I know it cannot be out of warranty. Only want the Mercedes extended warranty. Is their a vendor or dealership known here to the members who has the best price around? There is usually a dealership that focuses on discounting warranties and has a volume sales model. Any info, links, opinions on the cracked piston issue and extended warranty are greatly appreciated.
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Old Sep 14, 2021 | 02:19 PM
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There is no definitive information regarding engine numbers or build dates for the piston cracking issue. Only that Mercedes’ fingerprints are on the smoking gun in terms of the piston part number change for the M264 engine, which is descended from the M274 with piston cracking issues.

Cassandra Castro get lots of good feedback on this site for extended warranty pricing. I have had no dealings with her, just passing along what I have read on this site. Search feature will find her email address.

There are a large number of threads on extended warranties, the search function will find them.
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Old Sep 14, 2021 | 07:41 PM
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I had a better luck with Jeff Jackson
JJackson@mblouisville.com
502 896 4411

I found his contact on this site.
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Old Sep 15, 2021 | 05:10 PM
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'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
Originally Posted by seamus2154
We have a 2018 GLC300 perfectly optioned and absolutely love the truck. Its used gently by my wife as a soccer mom car with highway and in town use trips to the gymnasium. Been reading about this piston cracking issue and am pretty pissed about it. Figured a later truck all the bugs would be out. Have not had one issue with the truck. Don't know enough info yet if its a certain vin number batch, overblown, or a time bomb we are all facing with this motor. ??? Not a good market to trade into and as I said we would be hard pressed to find a similar certified truck. So considering an extended warranty. Our warranty expires 10/2021 and the certified warranty then goes till 10/22. Does the warrany need to be bought before the normal warranty expires or can we wait into the certified warranty?? I know it cannot be out of warranty. Only want the Mercedes extended warranty. Is their a vendor or dealership known here to the members who has the best price around? There is usually a dealership that focuses on discounting warranties and has a volume sales model. Any info, links, opinions on the cracked piston issue and extended warranty are greatly appreciated.
There's really no information on cracking pistons, except for a member who repeatedly thinks any four cylinder car has an obsolete engine. Mercedes didn't just change part numbers - they have different engines from the ground up, although some of the camshaft bits are likely similar.
If you want to verify my statement, check for recalls or tech bulletins at your dealer, or go to https://www.nhtsa.gov/recalls with your VIN.
Much ado about nothing.
Your Dealer is probably as good a source for that extended breakdown insurance as any. Just tell them that you want to shop and compare.
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Old Sep 15, 2021 | 08:12 PM
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Originally Posted by mikapen
There's really no information on cracking pistons, except for a member who repeatedly thinks any four cylinder car has an obsolete engine. Mercedes didn't just change part numbers - they have different engines from the ground up, although some of the camshaft bits are likely similar.
If you want to verify my statement, check for recalls or tech bulletins at your dealer, or go to https://www.nhtsa.gov/recalls with your VIN.
Much ado about nothing.
Your Dealer is probably as good a source for that extended breakdown insurance as any. Just tell them that you want to shop and compare.
Cmon @mikapen . Read the C-, GLC-, and E-Class sections of this site. Mercedes builds garbage. The piston cracking issue is one of a long list of recent examples. It’s a shame, a pity, for the brand and its owners.

Let’s hope the V167 GLE350 owners aren’t affected by this problem with the M264 engine, which descends from the piston cracking M274. The W223 S-Class seems to be plagued by some of the similar problems W213 and V167 owners have experienced. Lots of bobbles, missteps and whoopsies by MB.

You have been employed in the retail auto business, I don’t see how you can be objective about this kind of situation.

What do you think about these other ***** dropped by MB:

- air conditioning dirty socks smell
- M157 cylinder scuffing/grenade engine
- oil in harness affecting 4, 6 and 8 cylinder engines
- 48V system complete bellyflop
- timing chain tensioners on several engines
- Bluetec engines
- M156 head bolts

Mercedes is a high price, low quality manufacturer.


Last edited by chassis; Sep 15, 2021 at 08:20 PM.
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Old Sep 16, 2021 | 10:27 AM
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'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
Originally Posted by chassis
Cmon @mikapen . Read the C-, GLC-, and E-Class sections of this site. Mercedes builds garbage. The piston cracking issue is one of a long list of recent examples. It’s a shame, a pity, for the brand and its owners.

Let’s hope the V167 GLE350 owners aren’t affected by this problem with the M264 engine, which descends from the piston cracking M274. The W223 S-Class seems to be plagued by some of the similar problems W213 and V167 owners have experienced. Lots of bobbles, missteps and whoopsies by MB.

You have been employed in the retail auto business, I don’t see how you can be objective about this kind of situation.

What do you think about these other ***** dropped by MB:

- air conditioning dirty socks smell
- M157 cylinder scuffing/grenade engine
- oil in harness affecting 4, 6 and 8 cylinder engines
- 48V system complete bellyflop
- timing chain tensioners on several engines
- Bluetec engines
- M156 head bolts

Mercedes is a high price, low quality manufacturer.
Poor logic, worse info.
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Old Jan 7, 2023 | 10:09 PM
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I operate a specialty shop in Kansas City (Royal Autowerks) and just bought a 2016 C300 with 68K on it from a client with the loss of compression on cylinder #1 and will perform the detailed teardown (and rebuild ultimately). My client has registered for this class action lawsuit. I recommend that anyone that has had the same concern, reach out to the CA law firm that is pursuing the class-action suit.

https://www.classaction.org/news/mer...ng-m274-engine

I am a former Ford engineer and MIT mechanical engineering graduate (Masters and Bachelors). I have also been a mechanic for 39 years. I have engaged the law firm and will likely end up being the engineering and mechanical expert on this case.

I encourage you to get registered for the suit if you have suffered a loss. Do this before you dispose of the vehicle.

- Jason
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Old Jan 8, 2023 | 09:29 AM
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Originally Posted by trygve11
I operate a specialty shop in Kansas City (Royal Autowerks) and just bought a 2016 C300 with 68K on it from a client with the loss of compression on cylinder #1 and will perform the detailed teardown (and rebuild ultimately). My client has registered for this class action lawsuit. I recommend that anyone that has had the same concern, reach out to the CA law firm that is pursuing the class-action suit.

https://www.classaction.org/news/mer...ng-m274-engine

I am a former Ford engineer and MIT mechanical engineering graduate (Masters and Bachelors). I have also been a mechanic for 39 years. I have engaged the law firm and will likely end up being the engineering and mechanical expert on this case.

I encourage you to get registered for the suit if you have suffered a loss. Do this before you dispose of the vehicle.

- Jason
Thanks for posting.
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Old Jan 8, 2023 | 01:12 PM
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c300
I purchased a 2017 C300 in May of 2021 with 36k miles in Ala. Paid $27k; Still owe $10k on the note. Didnt even get to the second-year anniversary of the purchase date before the #1 cylinder lost compression, like you (and appararently many other unfortunate souls). 54k miles on the car, just beyond the mileage warranty. Told by the local MB dealership that engine would have to be replaced at $20,000+ (over the $2,000 its alrady cost to diagnose the issue). Car is a POS. I am aware of the CA class action and have retained a high-powered plaintiffs firm in Ala to pursue court remedies that may include joining the CA litigation or starting new class action in GA.

Social media is about to learn about what a crappy product MB puts out. Get the word out anyway you can: FaceBook, Twitter, Instagram, etc.

I have made a claim on MB which is "investigating" and am awaiting a decision. I do not excpect them to do anything as it's beyond manufacturer's warranty, but we'll see. Making claim under emissions warranty but Ala, being the bastion of Business First/No Consumer Protection state that it is, makes claims like this difficult, unlike in CA. In any event, MB's investigators will be told to escalate this to their legal department if I do not get full satisfaction.

Good luck with your situation.
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Old Jan 10, 2023 | 10:06 PM
  #10  
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Originally Posted by Westlawn1968%%
I purchased a 2017 C300 in May of 2021 with 36k miles in Ala. Paid $27k; Still owe $10k on the note. Didnt even get to the second-year anniversary of the purchase date before the #1 cylinder lost compression, like you (and appararently many other unfortunate souls). 54k miles on the car, just beyond the mileage warranty. Told by the local MB dealership that engine would have to be replaced at $20,000+ (over the $2,000 its alrady cost to diagnose the issue). Car is a POS. I am aware of the CA class action and have retained a high-powered plaintiffs firm in Ala to pursue court remedies that may include joining the CA litigation or starting new class action in GA.

Social media is about to learn about what a crappy product MB puts out. Get the word out anyway you can: FaceBook, Twitter, Instagram, etc.

I have made a claim on MB which is "investigating" and am awaiting a decision. I do not excpect them to do anything as it's beyond manufacturer's warranty, but we'll see. Making claim under emissions warranty but Ala, being the bastion of Business First/No Consumer Protection state that it is, makes claims like this difficult, unlike in CA. In any event, MB's investigators will be told to escalate this to their legal department if I do not get full satisfaction.

Good luck with your situation.
Sorry to hear about the experience. Consider also filing a complaint at NHTSA.gov
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Old Jan 11, 2023 | 06:13 AM
  #11  
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Originally Posted by chassis
Sorry to hear about the experience. Consider also filing a complaint at NHTSA.gov
Predictably, Mercedes was no help. Their fawning, laughable "Customer Service Advocate" email said nothing about the issues I raised and was clearly drafted to put them in the best light possible in front of a jury. This issue is definitely a safety issue. If I had been driving at speed on the highly congested interstate where I live, this could have resulted in a massive accident with significant injuries or death for me and others. Mercedes does not want to act responsibly by stepping up and addressing the problem, in my opinion, because it's cheaper for them to deal with litigation costs than do the right thing and recall/repair these vehicles. Moving forward on all fronts including litigation. Submitted complaint with NHTSA yesterday. Social and broadcast media next.

What a terrible product and company.
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Old Jan 11, 2023 | 09:37 AM
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(trygve11) Jason,
Please let us know what you find with pictures and YOUR opinion as to what caused it. Your credentials speak for themselves.
Thank you.
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Old Jan 11, 2023 | 08:43 PM
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Originally Posted by Westlawn1968%%
Predictably, Mercedes was no help. Their fawning, laughable "Customer Service Advocate" email said nothing about the issues I raised and was clearly drafted to put them in the best light possible in front of a jury. This issue is definitely a safety issue. If I had been driving at speed on the highly congested interstate where I live, this could have resulted in a massive accident with significant injuries or death for me and others. Mercedes does not want to act responsibly by stepping up and addressing the problem, in my opinion, because it's cheaper for them to deal with litigation costs than do the right thing and recall/repair these vehicles. Moving forward on all fronts including litigation. Submitted complaint with NHTSA yesterday. Social and broadcast media next.

What a terrible product and company.
Agreed. MB is a rubbish brand making rubbish products, unfortunately.
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