2015 E63 Wagon - Stock Engine Failure at 42K
Thread Starter
Newbie
Joined: Aug 2021
Posts: 8
Likes: 8
From: San Francisco
2015 E63 Wagon, 2007 GT3
2015 E63 Wagon - Stock Engine Failure at 42K
I purchased an unmodified 2015 E63 wagon in January 2018 at 15K miles from a proper enthusiast. I've driven it to its current 42K total miles. Car remains stock, completely babied. All maintenance done on time at dealer. The car had been bulletproof until it lost power on the highway a couple weeks ago. The dealer did a pressure test and leakdown, initially stated the car had significant carbon deposits, burned up its valves and needed the valves replaced for $26K. Then scoring on one of the cylinders was noted (No. 5 I believe). Now recommending a full replacement engine at $68K. I'm obviously shocked and dismayed that a car of this caliber would suffer catastrophic failure at 42K miles under completely normal usage.
I purchased an extended warranty on the vehicle which has yet to approve or deny coverage... and I'm unsure how that will play out. The replacement engine may exceed the limit of liability on the policy. It also may be an economically unsound repair cost (at greater than 80% of the vehicle value)
Has anyone had a similar experience with a stock E63 failing at such low mileage? Has anyone had MBUSA step up and cover part or all of replacement? I have yet to reach out as I just got this news in the last 48 hours.
I purchased an extended warranty on the vehicle which has yet to approve or deny coverage... and I'm unsure how that will play out. The replacement engine may exceed the limit of liability on the policy. It also may be an economically unsound repair cost (at greater than 80% of the vehicle value)
Has anyone had a similar experience with a stock E63 failing at such low mileage? Has anyone had MBUSA step up and cover part or all of replacement? I have yet to reach out as I just got this news in the last 48 hours.
Out Of Control!!
Joined: Jun 2004
Posts: 13,799
Likes: 3,229
2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
I purchased an unmodified 2015 E63 wagon in January 2018 at 15K miles from a proper enthusiast. I've driven it to its current 42K total miles. Car remains stock, completely babied. All maintenance done on time at dealer. The car had been bulletproof until it lost power on the highway a couple weeks ago. The dealer did a pressure test and leakdown, initially stated the car had significant carbon deposits, burned up its valves and needed the valves replaced for $26K. Then scoring on one of the cylinders was noted (No. 5 I believe). Now recommending a full replacement engine at $68K. I'm obviously shocked and dismayed that a car of this caliber would suffer catastrophic failure at 42K miles under completely normal usage.
I purchased an extended warranty on the vehicle which has yet to approve or deny coverage... and I'm unsure how that will play out. The replacement engine may exceed the limit of liability on the policy. It also may be an economically unsound repair cost (at greater than 80% of the vehicle value)
Has anyone had a similar experience with a stock E63 failing at such low mileage? Has anyone had MBUSA step up and cover part or all of replacement? I have yet to reach out as I just got this news in the last 48 hours.
I purchased an extended warranty on the vehicle which has yet to approve or deny coverage... and I'm unsure how that will play out. The replacement engine may exceed the limit of liability on the policy. It also may be an economically unsound repair cost (at greater than 80% of the vehicle value)
Has anyone had a similar experience with a stock E63 failing at such low mileage? Has anyone had MBUSA step up and cover part or all of replacement? I have yet to reach out as I just got this news in the last 48 hours.
Out Of Control!!
Joined: Jun 2004
Posts: 13,799
Likes: 3,229
2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
Thread Starter
Newbie
Joined: Aug 2021
Posts: 8
Likes: 8
From: San Francisco
2015 E63 Wagon, 2007 GT3
I don't know how bad the scoring was. Though I was told that compression loss was 60% on the bad cylinder (which I believe was No. 5)
No pics yet.
No high oil consumption previously.
No pics yet.
No high oil consumption previously.
Senior Member
Joined: Oct 2015
Posts: 274
Likes: 84
From: Earth
C63 W204 / E63S W212 / E63S W212
I remember a thread here, one m157 owner thought he had a scored cylinder when it was just carbon buildup. He used some solvent type spray to spray directly in to intake then drove it at high rpms and his compression was back to normal. So id take a good look with a camera in to the cylinders first, if no smoking gun evidence then try the method i mentioned. Most cameras have dual lenses, not impossible to see the valves.
I wouldn't let anyone tear in to my engine until ive seen the damage with my own eyes or until it becomes obvious via diagnosis.
Last edited by timm206; Aug 25, 2021 at 12:39 PM.
Senior Member
Joined: Jul 2019
Posts: 443
Likes: 91
CLS400 4Matic EC Tuned
Reading these threads is kinda scary. I plan on getting a 2016 CLS63 next year with 30,000 miles or less. I guess I gotta have a mechanic or a Benz dealer to look for this specific problem.
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Super Member
Joined: Dec 2010
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From: Long Island ny
2007 e350 sport. 2010 350 4matic sport. Worlds first W212 E63R self built.
I do not trust dealers!! They say something is bad all the time and that’s how they get paid and make money . Scoring does not mean engine needs replacing . Low compression ? Ok so ask them which cylinder and how much does if differ from the other? And are the seals on the fuel injector good because that can cause a low compression reading . When you say lost power, did the car not turn over anymore and start . Did it go into limp mode? Was it smoking etc.
MBWorld Fanatic!
Joined: Apr 2008
Posts: 1,399
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From: Bay Area, California
2015 E63s AMG, 2020 GLC 43 AMG
I do not trust dealers!! They say something is bad all the time and that’s how they get paid and make money . Scoring does not mean engine needs replacing . Low compression ? Ok so ask them which cylinder and how much does if differ from the other? And are the seals on the fuel injector good because that can cause a low compression reading . When you say lost power, did the car not turn over anymore and start . Did it go into limp mode? Was it smoking etc.
they replaced my motor 2 years ago with very slight scoring on #5. I have built motors and seen worse scoring in cylinders with no issues at all. They said my motor replacement was from piston slap as I had brought it in with light ticking sound that from my trained ear (former mechanic) sounded like valve train (lifters and such). I had piston slap once on one of my motors and it sounded like a hammer hitting the side of the block.
Of course I didn’t say a word and let them twist my arm to give me a brand new long block motor.
