C300 Cracked Piston Basics; which dates, VINs, etc are susceptible?
Thread Starter
Member
Joined: Sep 2017
Posts: 174
Likes: 36
From: Central Oregon USA
2017 C300 Cab 4Matic
C300 Cracked Piston Basics; which dates, VINs, etc are susceptible?
There are a lot of threads on cracked piston occurrences in C300 4 cyl engines but I haven't found any that just provide the basic exposure factors so C300 owners should know if their engine is a risk; i.e., affected model years, manufacture dates, VINs, factory location, etc. Is there such a summary of which C300s are likely to experience the piston failure somewhere?
Newbie
Joined: Nov 2020
Posts: 6
Likes: 2
2020 C Class
There are a lot of threads on cracked piston occurrences in C300 4 cyl engines but I haven't found any that just provide the basic exposure factors so C300 owners should know if their engine is a risk; i.e., affected model years, manufacture dates, VINs, factory location, etc. Is there such a summary of which C300s are likely to experience the piston failure somewhere?
Thread Starter
Member
Joined: Sep 2017
Posts: 174
Likes: 36
From: Central Oregon USA
2017 C300 Cab 4Matic
Ughh. I thought '17s were clear of the issue but I have an M274 engine.
Newbie
Joined: Aug 2021
Posts: 3
Likes: 2
dem jeeps
Thanks for the replies appreciate it. While the C class looks the nicest out of BMW Audi, major engine failure is a joke.
mind boggling that they’ve had this issue for this whole generation and beyond!
and I thought Bmw had poor reliability because you had to replace the coolant system hoses and anti freeze tank like every 150k miles lol.
anyway thanks again, I guess I can live rattle free in the foreseeable future.
mind boggling that they’ve had this issue for this whole generation and beyond!
and I thought Bmw had poor reliability because you had to replace the coolant system hoses and anti freeze tank like every 150k miles lol.
anyway thanks again, I guess I can live rattle free in the foreseeable future.
Newbie
Joined: Sep 2016
Posts: 8
Likes: 24
2012 GL450
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) and 39 years as a mechanic. 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
https://www.classaction.org/news/mer...ng-m274-engine
I am a former Ford engineer and MIT mechanical engineering graduate (Masters and Bachelors) and 39 years as a mechanic. 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
Out Of Control!!
Joined: Sep 2018
Posts: 14,666
Likes: 4,568
From: unbegrenzt
2017 GLE350 4MATIC
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) and 39 years as a mechanic. 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
https://www.classaction.org/news/mer...ng-m274-engine
I am a former Ford engineer and MIT mechanical engineering graduate (Masters and Bachelors) and 39 years as a mechanic. 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
