sayeedahm

I own 2014 E350 and I absolutely love my car. I encouraged my sister to buy E300 in 2018 as they rated one of the safest vehicle manufacture in the world. Now she needs a new engine on the w213. She was driving home from a local grocery shop last week and suddenly engine started shaking in the middle of the road. I was with her and I saw check engine light came on. I told he to move the car to the middle lane and stopped the engine. I was not sure what is happening. I called MB customer service and they sent a towing truck to tow it to the nearest MB dealer. Next day they mentioned spark plug went into the engine and destroyed the entire engine. I was shocked because it only has 23K miles and i always make sure her car is up to dated with all the services. ( Spark plug replacement interval in service manual shows 50K or 5 years ) I spoke to one of my friends at different Mercedes dealers and he said they are replacing engine almost every week for the same reason on W213. Why Mercedes is not recalling this car, is there a manufacturing defect? she is so concerned now and scared of driving, they gave her a loaner car and told her engine will be replaced under warranty. She was lucky that it did not happen on a freeway. Does anyone have a similar experience?

joesama

From my understanding, there are some issues with M274 engines as per the W205 forum here.
Have a look at the post here.
https://mbworld.org/forums/c-class-w...5-k-miles.html

I have a feeling that M274 on E300 or the C300 with higher rated turbo may be causing issues? I've got a detuned E200 M274 engine and I haven't heard anyone having issues with it.

sayeedahm

Thank you so much for the link. This is exactly what happened to her Mercedes while driving. Suddenly engine lost the power and check engine light came on. I don’t know if dealer is hiding that piston 1 is cracked, but service advisor was very confident before even looking into the car that I have this issue and made me think I am not the only one with this issue.
I live in California and we have a strict lemon law. I mentioned this to MB corporate let’s see what they do. I will also consult with a lemon lawyer.

ygmn

Small question..

How does a spark plug get SUCKED into engine?
Or is the electrode and insulator on plug bottom inside cylinder FAILING and falling into cylinder?
I mean the plug is larger then the tapped hole they are screwed into.

This is not good if true.

Cao Black

Good luck. Please keep us posted.

Obviously this is a condition that could affect nearly all of us. I happen to have turned in my '14 E350 for a '18 E300. I prefer the E300 and have had no problems.

sayeedahm

Yeah, I thought the same. Spark plug cannot go to engine unless it broke inside. I think piston cylinder 1 cracked like other people reported on c300 forum but dealer is just making it simple saying spark plug destroyed the engine. May be this becoming a common issue and they are giving different name to avoid lawsuits.
I will ask dealer to send me photos for the damage. I don’t know if they would do that.

ua549

I had the #1 spark plug fail at 13k miles, but the dealer caught it during my third annual service visit before any damage was done.

sayeedahm

yeah trust me, I was going to trade in my E350 for an E300 soon but I am so glad that I didn’t do that. I guess this will happen to everyone and make sure to buy extended warranty for your E300 after 4 years. E300 and C300 uses same engine and a large number of people on C300 forum has same issue. I remember once I took My E350 to my MB dealer for serving and I asked my service advisor what do you think about E300 because I know him so well from many years of servicing. He told me we are changing E300 engine almost every week because of a turbo issue. He told me to wait a little before getting E300. I thought that cannot be true. I would not buy an E300 after this failure.

sayeedahm

What happened, did it cracked or just not functioning?

ua549

It probably had a crack since it misfired intermittently at high revs. The failure details were not on the completed work order.

moosaud1998

And I just bought an E300 almost 9 months ago...

joesama

This is a little strange to me.
My service sched shows to change the Sparks every 3yrs? Perhaps this is updated??

ua549

My 2018 E300 has had far fewer issues than any previous vehicle I've owned. So far I've had (IIRC) 3 or 4 minor warranty repairs, no squeaks, rattles or vibrations. I replaced tires at ~12k miles which is average mileage for me over the past 60 years.

moosaud1998

Is this a known issue? Or has it been figured out? Because I hear rattling noises when I start the car first in the morning. I had my Mercedes dealership take look at it and they told me it's the high-pressure fuel pump that makes that noise. Like wastegate rattle? Sounds like a diesel though. I have the car over at the dealership to fix some other issues so I can point the whole engine failure issue out to them so they can look further into it. Damn, all these issues are really starting to freak me out.

joesama

I don't think you have a problem by the sound of it. My E200 sounds like that too when started cold. It quickly goes away after it heats up probably within the 5 mins of driving. I also do get the engine vibration when cold. My mum's 2010 C250 W204 with M271 engine does this too. It is a distinct signature to Mercedes 4 pot engines I believe. One of my friend's A class does this too.

moosaud1998

Yes, once the engine is warm, the noise goes away.

ua549

That sound is normal for any direct fuel injected engine. It is not unique to Mercedes.

moosaud1998

Hopefully, I don't end up with a bad engine. My bumper to bumper warranty end Feb and CPO in 2022.

joesama

Sorry.. didn't realize that. Didn't know other cars did this too. Never had a chance to experience other brands for this.

sayeedahm

hopefully you will buy extended warranty after that. I feel so lucky to have our original warranty covering this damage but obviously car value will go to drain if we want to sell it someone. People will hesitate to buy an engine replaced vehicle.

moosaud1998

Idk man. An extended warranty from my dealership is a whole $3k for I think 3 years. Might sell the car after CPO ends. I don't know what to do yet. I've only had the car for 11 months and put 2k miles on it from driving back and forth to the dealership for new issues. Literally fill the tank up just to drive it back to the dealership the following week.

sayeedahm

I feel for you. I passed extended warranty on my 2014 E350 because of the solid engine record from previous years. I cannot think of myself without having an extended warranty on W213 model. I don't know if they improve the engine on 2020 model. We may just trade-in for a newer model if they fixed the issue.

E300-18

The service schedule in the U.S. is a little different. I don't know why.

rmorin49

This thread is disturbing. I am debating the purchase of an E450 vs E350. I think I have decided to go with the E450. Am I crazy?

ua549

No, you are just being cautious. The 4 pot engine is much more stressed than the 6 pot engine. Personally, I would go with a 6 cylinder engine over a 4 under any circumstances.