W205 C300 - stay away. Piston cracked at 65 K miles.
01-01-2019, 02:55 PM
#1
W205 C300 - stay away. Piston cracked at 65 K miles.
Maybe someone will find it useful.
California car, W205 C300 4 matic. Slightly over 4 years, about 65K miles.
Timely serviced etc.
Cracked piston in cyl 1.
Mercedes refuses to cover 100% of repair costs , which is in my view ridiculous as cracked piston is not something that normally happens as the result of normal wear and tear, especially in a 4 year old car.
This will be my last Mercedes, lesson learned ! Bye, Mercedes.
California car, W205 C300 4 matic. Slightly over 4 years, about 65K miles.
Timely serviced etc.
Cracked piston in cyl 1.
Mercedes refuses to cover 100% of repair costs , which is in my view ridiculous as cracked piston is not something that normally happens as the result of normal wear and tear, especially in a 4 year old car.
This will be my last Mercedes, lesson learned ! Bye, Mercedes.
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01-01-2019, 05:00 PM
#5
01-01-2019, 05:38 PM
#6
No recall, but a lot of the cars had this issue. The problem is you’re out of warranty coverage so the dealers / mbusa will probably have no obligation to repair the issue. I made sure to purchase an extended warranty cause these 2015 w205s are POSs. The reason they repaired the wrist pin was to prevent premature piston related damage, so maybe this could have been likely secondary to that. It’s sounds like a lot of people have had issues with the wrist pin, and it is a known defect from the early builds that is known by Mb so you might have some ammo to fight the case they should repair this at goodwill
Last edited by Elbandito; 01-01-2019 at 08:09 PM.
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NailsByHoney (08-24-2021)
01-01-2019, 11:56 PM
#7
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2015 C300 4MATIC
Well crap, sorry to hear that. I think I have the wrist pin issue but the car has passed the original warranty date, so I'll bring it in for diagnostics at my cost, and see how much MB will want to repair it, and compare to the cost of an aftermarket extended warranty.
How much did MB want for repairing a cracked piston?
How much did MB want for repairing a cracked piston?
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NailsByHoney (08-24-2021)
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01-02-2019, 01:01 AM
#8
Yikes! I have a 2015 c300 too but had the entire engine swapped with a new one under warranty this past summer. I had the wrist pin done prior to the replacement, but I had my doubts after. Even when my spark plug damaged my engine the tech said it was a best case scenario to get it replaced. I have a feeling MB is going to have a lot of 2015 engine piston complaints in the near future, keep those receipts.
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01-02-2019, 12:04 PM
#10
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NailsByHoney (08-24-2021)
01-02-2019, 12:05 PM
#11
Well crap, sorry to hear that. I think I have the wrist pin issue but the car has passed the original warranty date, so I'll bring it in for diagnostics at my cost, and see how much MB will want to repair it, and compare to the cost of an aftermarket extended warranty.
How much did MB want for repairing a cracked piston?
How much did MB want for repairing a cracked piston?
The following users liked this post:
NailsByHoney (08-24-2021)
01-02-2019, 12:11 PM
#12
No recall, but a lot of the cars had this issue. The problem is you’re out of warranty coverage so the dealers / mbusa will probably have no obligation to repair the issue. I made sure to purchase an extended warranty cause these 2015 w205s are POSs. The reason they repaired the wrist pin was to prevent premature piston related damage, so maybe this could have been likely secondary to that. It’s sounds like a lot of people have had issues with the wrist pin, and it is a known defect from the early builds that is known by Mb so you might have some ammo to fight the case they should repair this at goodwill
i agree with you that if it is actually a cracked piston, it can be related to a loose wrist pin... that’s why I ask the Fremont dealer to email me the picture - if the piston cracked exactly at a joint with the wrist pin - then it would have been most likely consequencies of the wrist pin issue... if the crack is on top of the piston - then it may be related to a bad fuel injector (which is still under 70K miles warranty !!! )... in both cases in my opinion it should be covered by mercedes... but I think dealer figured out that I am an engineer and does not want to provide info.
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NailsByHoney (06-01-2020)
01-02-2019, 12:13 PM
#13
Yikes! I have a 2015 c300 too but had the entire engine swapped with a new one under warranty this past summer. I had the wrist pin done prior to the replacement, but I had my doubts after. Even when my spark plug damaged my engine the tech said it was a best case scenario to get it replaced. I have a feeling MB is going to have a lot of 2015 engine piston complaints in the near future, keep those receipts.
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NailsByHoney (06-01-2020)
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01-02-2019, 03:49 PM
#15
i agree with you that if it is actually a cracked piston, it can be related to a loose wrist pin... that’s why I ask the Fremont dealer to email me the picture - if the piston cracked exactly at a joint with the wrist pin - then it would have been most likely consequencies of the wrist pin issue... if the crack is on top of the piston - then it may be related to a bad fuel injector (which is still under 70K miles warranty !!! )... in both cases in my opinion it should be covered by mercedes... but I think dealer figured out that I am an engineer and does not want to provide info.
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NailsByHoney (08-24-2021)
01-10-2019, 08:36 PM
#16
W205 Engine noise (like old diesel Toyota)
I cannot understand why Mercedes Benz is not taking this issue seriously. The w205 2.0L engine has design problems !!!!!My C300 W205 2015 was ok for 3 months. After that the engine was starting making noises under low revs like a diesel Toyota from the 80’s. My Canadian MB dealer ignored my complaints until the day the sound was so evident and they didn’t have excuses to no pay attention. The diagnosis was wrist pin issue. They replaced pistons, pistons bearings and connecting rods (engine less than 25 k miles).6 months later engine issues and car at the dealer. Diagnosis was a broken connecting rod. Big fight with the dealer because they were planning to replace just the failed connecting rod (What ???). Finally they decided to replace the engine (called big block) for example the turbo even it was exposed to metallic parts for the broken connecting rod was not replaced (info from the dealer: that's why you have an oil filter...). Car was 2 months at the dealer waiting for a new engine (come on guys, this is Canada, far away from the world).The new engine has now 53 K miles and my diesel Toyota SHOW UP again, yes the F… noise is there again (between 1700 and 2000 rpm) and it is so loud that you can hear it from the cabin. I went to the delaer and they said: it is normal and it is related to the direct fuel injection (maybe this is why they changed pistons and connecting roads before ???). BTW they told me: you don't have warranty now and further inspection will cost you $200 an hour (at least these are CAD dollars).This is incredible, I’m old enough to have several experiences buying brand new cars and in different countries. My ESL is from an underdevelopment country, but even in that country, the treatment of an issue like this one will be better of what MB Canada and USA are doing …I give up. For me is good to know what is the car brand I will never buy again. If somebody really knows what is that issue, pls inform that to MB.
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01-11-2019, 08:01 AM
#17
No recall, but a lot of the cars had this issue. The problem is you’re out of warranty coverage so the dealers / mbusa will probably have no obligation to repair the issue. I made sure to purchase an extended warranty cause these 2015 w205s are POSs. The reason they repaired the wrist pin was to prevent premature piston related damage, so maybe this could have been likely secondary to that. It’s sounds like a lot of people have had issues with the wrist pin, and it is a known defect from the early builds that is known by Mb so you might have some ammo to fight the case they should repair this at goodwill
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NailsByHoney (08-24-2021)
01-11-2019, 03:54 PM
#18
Junior Member
06-22-2019, 12:26 AM
#19
Thanks @dimbmw ,
It's real, many of MB 2015 C300(s) were imported to Taiwan from California , I bought one.
I heard about many cases of piston cracked, repair fee is around USD5K at Taiwan local maintenance plant .
My old Mazda 6 over 15 years, still working fine. How can MB C300 piston crack at 4 years?
As my image, US consumers are powerful than Asian's, how MB & government can ignore this issue ?
It can cause serious accident, it should be recall, right?
It's real, many of MB 2015 C300(s) were imported to Taiwan from California , I bought one.
I heard about many cases of piston cracked, repair fee is around USD5K at Taiwan local maintenance plant .
My old Mazda 6 over 15 years, still working fine. How can MB C300 piston crack at 4 years?
As my image, US consumers are powerful than Asian's, how MB & government can ignore this issue ?
It can cause serious accident, it should be recall, right?
Last edited by wlm44134; 06-22-2019 at 12:30 AM.
06-23-2019, 09:53 PM
#20
Junior Member
What type of fuel do you use? Have heard from many MB mechanics that the turbo 4's will have a cracked 1st piston due to poor fuel. I.e. running 87 nonstop.
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07-05-2019, 04:34 PM
#24
Narrator: - "When I was a kid I had a dream about a car. Not just any car. It was a Mercedes-Benz... Brand new, shiny, fast, unbreakable... A Mercedes-Benz... I worked really hard to earn enough money to make my dream come true. Finally, I did it. In 2015 i went to a dealership... Just look at it! What an achievement! I was so happy and I enjoyed driving it. 50000 miles later I learned what a wrist pin is... A life changing event!"
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