[ianrandom]

Any chance of writing to a newspaper? Some of ours will take up issues even with banks etc and get a good result.

 

[frustratedmom]

Hello,

I have a 2016 GLC300 and a check engine light of misfire. The car has 56K miles on it and what do you know it is out of warranty by 6k miles and few months. Dealership has checked out the vehicle after taking the head off to look inside the cylinder #2 - found out that cylinder #2 has a cracked piston that is 1.5 inches long. I have contacted Mercedes' customer service and corporate has declined my good will warranty claim giving me the usual run down - the vehicle is a 2nd owner, even though the maintenance has been done completely at the dealership, it is out of warranty so on and so forth. It is now up to the dealership and regional manager to perhaps cover it under good will warranty or give me a big discount. The estimated bill is $8,500 - WOW! I live in New Jersey so prices could be a little higher.

I really think that there is a defect in that piston that led it to be cracked at such a low mileage. Whilst I understand the mechanics of how cars work and may break down after abusive usage and low maintenance, I assure you it is not the case here. This car is taken care of like it is a baby - very clean up to par on so many levels. A "MERCEDES-BENZ" should not simply have a faulty piston like mine that cracked due to what ??? nothing ??? If it does, it should be covered based on records of maintenance and good will and they should 100% stand behind their cars. What do you guys think? Has anybody had the same problem in these cars or in any other cars that have the same engine like the C class? I am asking if there is anywhere to turn/ escalade this situation to get this car fixed by warranty?

Please comment below - anything is appreciated.

We are currently dealing with the same issue except ours is on the Piston 1 that is cracked. We have a 2018 Mercedes Benz C-300 with approx 60K miles-got the vehicle from the dealership with approx 3K miles so just out of warranty.
Goodwill did not occur in our case. After receiving a bid from the Mercedes Benz dealership I have serviced at for over 10 years all MBUSA wanted to give us was 10% off of a total bid over $36K suggesting to completely rebuild the engine, 4K just to take the engine apart and look at it. Completely dangerous situation to put drivers in. From the conversations I have had with my Mercedes service advisor, Mercedes is aware of the problem and redesigned the pistons in the 2019 models. They are completely ignoring a major malfunction of their vehicles. We even reached out to Daimler they sent us back to MBUSA and said let them handle it. We were assigned to a rude representative who did nothing but state they would provide 10% off and their decision was final. He said the buck stopped with him for the entire United States. Having been a loyal Mercedes customer (over the past 10 years and 4 cars, I am completely shocked by the way they are handling this.

 

[Deplore]

I'm honestly not that surprised. Find an Indy who has done the piston replacement and have them do it. Good Indy will charge anywhere from 3-5k.

 

[frustratedmom]

You can report your safety concern to NHTSA.gov and file a report. If we all collectively report it, Mercedes can't ignore all of us.

 

[Worried soldier]

Update on this issue, Mercedes is going to cover 100% of the labor and 75% of the parts for the repair. I have fought very hard and clever Thank you for your responses. and they do know the issue, there is also a very common issue with these cars which is crankshaft vent valve which they wont cover it but since they are in the engine already it is just a matter of part cost so i am getting that done as well as all the rest of the pistons. Hopefully i dont get a piston slap in the future because they are only replacing piston heads.

Please guide me on how you got help. I have the same problem with by Glc with 60k miles on. Mercedes tell there's no warranty and it's wear and tear. I have properly maintained the vehicle with no problems and I barely put 2000miles on it since I bought it. The dealership refuses to help too
Your advice will greatly be appreciated!

 

[2015pistoncrack]

I’m going through the same thing .spoke to Mercedes’ Benz customer service on several occasions and they told me I was out of warranty and they would not be helping . My car has 51k miles . Misfire cylinder one and cracked piston. The cracked piston is due to the Diesel engine sound the car was making from the faulty wrist pin that they used on our cars . It was causing something called piston slap where the piston wiggles from side to side causing that diesel sound. With time this leads to piston cracking . I’ve written to the NHTSA (you all need to go on the site and file a complaint) I’m also sending them a petition to investigate which by law they have to look into this issue and if they deny the recall they will have to state the reason why in the federal register. We should start hearing things within the next couple of months . This is a major safety hazard that needs to be corrected.

We are currently dealing with the same issue except ours is on the Piston 1 that is cracked. We have a 2018 Mercedes Benz C-300 with approx 60K miles-got the vehicle from the dealership with approx 3K miles so just out of warranty.
Goodwill did not occur in our case. After receiving a bid from the Mercedes Benz dealership I have serviced at for over 10 years all MBUSA wanted to give us was 10% off of a total bid over $36K suggesting to completely rebuild the engine, 4K just to take the engine apart and look at it. Completely dangerous situation to put drivers in. From the conversations I have had with my Mercedes service advisor, Mercedes is aware of the problem and redesigned the pistons in the 2019 models. They are completely ignoring a major malfunction of their vehicles. We even reached out to Daimler they sent us back to MBUSA and said let them handle it. We were assigned to a rude representative who did nothing but state they would provide 10% off and their decision was final. He said the buck stopped with him for the entire United States. Having been a loyal Mercedes customer (over the past 10 years and 4 cars, I am completely shocked by the way they are handling this.

 

[2015pistoncrack]

Please guide me on how you got help. I have the same problem with by Glc with 60k miles on. Mercedes tell there's no warranty and it's wear and tear. I have properly maintained the vehicle with no problems and I barely put 2000miles on it since I bought it. The dealership refuses to help too
Your advice will greatly be appreciated!

Me too, what is it that got them to turn it around and help you? I’ve had no luck at all.

 

[Whosdis]

I guess I'm lucky - knock on wood. I bought my 2017 GLC 300 4Matic in August 2020. Went from 94,000 Km to its current 201,000 Km, no issues, powertrain-wise.

I don't know what the price is for the parts, but to pass a flex hone in a cylinder and rinse it down with brake cleaner before reassembling it shouldn't cost much.

 

[ctaylorwarner]

Hello,

I have a 2016 GLC300 and a check engine light of misfire. The car has 56K miles on it and what do you know it is out of warranty by 6k miles and few months. Dealership has checked out the vehicle after taking the head off to look inside the cylinder #2 - found out that cylinder #2 has a cracked piston that is 1.5 inches long. I have contacted Mercedes' customer service and corporate has declined my good will warranty claim giving me the usual run down - the vehicle is a 2nd owner, even though the maintenance has been done completely at the dealership, it is out of warranty so on and so forth. It is now up to the dealership and regional manager to perhaps cover it under good will warranty or give me a big discount. The estimated bill is $8,500 - WOW! I live in New Jersey so prices could be a little higher.

I really think that there is a defect in that piston that led it to be cracked at such a low mileage. Whilst I understand the mechanics of how cars work and may break down after abusive usage and low maintenance, I assure you it is not the case here. This car is taken care of like it is a baby - very clean up to par on so many levels. A "MERCEDES-BENZ" should not simply have a faulty piston like mine that cracked due to what ??? nothing ??? If it does, it should be covered based on records of maintenance and good will and they should 100% stand behind their cars. What do you guys think? Has anybody had the same problem in these cars or in any other cars that have the same engine like the C class? I am asking if there is anywhere to turn/ escalade this situation to get this car fixed by warranty?

Please comment below - anything is appreciated.

I have a 2018 GLC 300, 56k, with engine light on. Bought it used a year ago. 1st place diagnostic indicated faulty fuel injectors, replacement $4500. Got a 2nd opinion and they indicated it was a cylinder issue and recommended taking head off to take a deeper dive. Discovered piston crack in cylinder 4. $6500 to replace. I am now taking it to dealer to plead for mercy and try to get a deal. Will never buy a Mercedes product again given how new this car is and the care the 1st owner gave the car. Should not have a cracked piston after 4 years, 56k miles!

 

[ianrandom]

I have a 2018 GLC 300, 56k, with engine light on. Bought it used a year ago. 1st place diagnostic indicated faulty fuel injectors, replacement $4500. Got a 2nd opinion and they indicated it was a cylinder issue and recommended taking head off to take a deeper dive. Discovered piston crack in cylinder 4. $6500 to replace. I am now taking it to dealer to plead for mercy and try to get a deal. Will never buy a Mercedes product again given how new this car is and the care the 1st owner gave the car. Should not have a cracked piston after 4 years, 56k miles!

It's bonkers isn't it. Let is know how you get on, and good luck!

Also this is good to do - Complete your Profile

 

[Lgiles1301]

I am having the same issue - broken piston.. 2017 glc 300 88000 miles and quote is for 9200 to replace the engine.. if i decide to fix it with the new engine, will it be the same one that is clearly having issues?

 

[Socaldave316]

I am sorry to hear. My suggestion is to keep the pressure on and good luck. They should cover this. Call the Mercedes use Twitter Facebook, i did all of that and it worked.

Good luck keep us updated.

Hi, please reconsider giving more detailed advice to other owners struggling to get help from the dealer or MBUSA. I have a 2016 GLC300 @49K miles with the same issue. MBUSA and dealer have been quick and firm with "No.". I'm not giving up, but would be really nice to get a better idea of which direction works with them. Did you threaten legal action? NHTSA complaints? BBB complaint? Or did making a big deal of it on social media help? You said you were clever, so please share what tactic(s) worked?

Thank you!

 

[Madoc]

I purchased a 2017 C300 class Mercedes-Benz ("MB") in May 2021 from a used car dealship in Mobile, AL. At that time it had 36,000 miles. Less than 2 years later, on or about 12/15/22, as I was driving, the MB suddenly and without warning began to vibrate violently and immediately lost power. The car had @54,000 miles on it. I routinely drive interstate to and from work and had just gotten off of the interstate. I was lucky that I was driving at a low speed when this happened; otherwise, a serious accident could have resulted. The local MB dealership told me that the car failed a compression test in the #1 cylinder and that the engine would have to be replaced at $20,000. Of course, this was beyond warranty. MB washed its hands over its defective product, refused to act responsibly and replace the engine. MB essentially told me to "go pound sand". Subsequent research on the cause of this total engine failure with low mileage (I repeat: 54,000 miles) relvealed that this engine has a chronic piston defect that typically damages the #1 cylinder, causing it to lose compression, and that MB has known about the defect for many years prior. MB has not alerted the public nor instigated a recall. In my pre-purchase research, I found no information from MB that the C300 class engine (M274) had a chronic piston defect that would damage the #1 cylinder which would, in turn, cause the entire replacement of the engine. Despite demands by me and others, MB refuses to responsibly address the issue. Instead, MB prefers to allow this condition to exist so that the defective engine will get beyond its warranty obligations, creating significant economic harm to its so-called valued customers. This is outrageous. The driving public is clearly in great risk of harm due to this defective engine and associated power train problems and MB is putting its profits over consumer safety and doing the right thing by recalling and replacing this defective engine. It is patently unreasonable for MB to produce and market such a unsafe, dangerous and defective product that poses an unreasonable risk of harm to its customer and others, not to mention significant economic loss to its customers. There is a class action pending in Cal over violations of Cal consumer laws. I am looking at putting together a national class action. (excluding Cal) I have also filed a complaint with the NHTSA. A crap product from a crap company. No one in their right mind should ever purchase a MB product. Absolutely not worth it.

 

[Madoc]

Hi, please reconsider giving more detailed advice to other owners struggling to get help from the dealer or MBUSA. I have a 2016 GLC300 @49K miles with the same issue. MBUSA and dealer have been quick and firm with "No.". I'm not giving up, but would be really nice to get a better idea of which direction works with them. Did you threaten legal action? NHTSA complaints? BBB complaint? Or did making a big deal of it on social media help? You said you were clever, so please share what tactic(s) worked?

Thank you!

Please see my oust below. If interested to join a class action vs Mercedes, let me know.