2018 E63s blown engine
MBWorld Fanatic!
Joined: Feb 2021
Posts: 1,419
Likes: 738
From: Nor-Cal
2020 GLC300 -2014 Sl550 - 1997 SL600
One thing to check is to make sure they put the right spark plugs and heat range in (stranger things have happened).
it’s also worth noting that some tuners (such as Weistec) use a one step colder plug in M157’s (and M278’s) in an effort to reduce pre-ignition.
This issue is real…
https://www.weistec.com/spark-plug-s...OJRTNTpRjk11V7
it’s also worth noting that some tuners (such as Weistec) use a one step colder plug in M157’s (and M278’s) in an effort to reduce pre-ignition.
This issue is real…
https://www.weistec.com/spark-plug-s...OJRTNTpRjk11V7
Last edited by crconsulting; Aug 11, 2025 at 10:44 PM.
MBWorld Fanatic!
Joined: Aug 2007
Posts: 1,833
Likes: 794
From: Pacific Northwest
2001 S600 V12 Sold, 2011 Jaguar XFR Sold, 2017 S550 4-Matic, 2018 S63 AMG Sedan
Have a 2018 E63s and while driving last week noticed the CEL light on so pulled over and shut off. 5 minutes later started it up and drove home with no CEL and full power. Later that day I started car and had CEL blinking and car shaking. Shut it off and had towed to dealership. They told me that tip of a spark plug broke off and damaged the cylinder and I would need a new engine. The car has only been serviced at one dealership and they completed the spark plug change under a year ago.
Not sure if anyone else has experienced this and what the outcome was? Also heard that engine is on backorder with no ETA??
Not sure if anyone else has experienced this and what the outcome was? Also heard that engine is on backorder with no ETA??
Thread Starter
Junior Member
Joined: Mar 2018
Posts: 21
Likes: 22
From: Canada
2018 E63S
I dropped the car off at the dealership 2 weeks ago and they confirmed the tip of the park plug broke off and damaged cylinder # 4 scoring the walls.
MB now Wants to investigate further to see if anything in the engine caused the spark plug breakage.
The service manager has given me a loaner and he thinks it willbe a parts warranty claim as do I but we will see..
MB now Wants to investigate further to see if anything in the engine caused the spark plug breakage.
The service manager has given me a loaner and he thinks it willbe a parts warranty claim as do I but we will see..
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 dropped the car off at the dealership 2 weeks ago and they confirmed the tip of the park plug broke off and damaged cylinder # 4 scoring the walls.
MB now Wants to investigate further to see if anything in the engine caused the spark plug breakage.
The service manager has given me a loaner and he thinks it willbe a parts warranty claim as do I but we will see..
MB now Wants to investigate further to see if anything in the engine caused the spark plug breakage.
The service manager has given me a loaner and he thinks it willbe a parts warranty claim as do I but we will see..
MBWorld Fanatic!
Joined: Feb 2017
Posts: 2,309
Likes: 1,213
From: Baltimore County, MD
'13 s212 63 p30. '06 LX470
I dropped the car off at the dealership 2 weeks ago and they confirmed the tip of the park plug broke off and damaged cylinder # 4 scoring the walls.
MB now Wants to investigate further to see if anything in the engine caused the spark plug breakage.
The service manager has given me a loaner and he thinks it willbe a parts warranty claim as do I but we will see..
MB now Wants to investigate further to see if anything in the engine caused the spark plug breakage.
The service manager has given me a loaner and he thinks it willbe a parts warranty claim as do I but we will see..
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MBWorld Fanatic!
Joined: Aug 2007
Posts: 1,833
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From: Pacific Northwest
2001 S600 V12 Sold, 2011 Jaguar XFR Sold, 2017 S550 4-Matic, 2018 S63 AMG Sedan
AFAIK the only causes for a broken spark plug are pre-ignition detonation and inteference. Many different causes for pre-ignition, but nothing common in this engine, can't say the same for Audi engines. And inteference probably didn't happen because once it happens everything goes bad, and they would have seen it when they scoped the cylinder. Glad your dealer is advocating for you! Keep us posted and goood luck.
MBWorld Fanatic!
Joined: Jun 2021
Posts: 3,119
Likes: 1,355
From: Fleriduh
W212 E63S Wagon - GSL580 - E63 - E350 - C300
I would like to spend some time this am...right at 7am of what I know is going to be a NUTTY DAY....well, just to thank the OP for giving me something more to worry about with my "grenade" Mercedes V8's (I own three of them).....yes, my life needed more worry.
That said, sounds like the Stealership is really stepping up and going to take care of this. That is rare indeed. Often (more so since KungFlu) - people in all industries have forgotten that it is not too hard to do "the next right thing" no matter what situation you are in. Seems they are doing that.
That said, sounds like the Stealership is really stepping up and going to take care of this. That is rare indeed. Often (more so since KungFlu) - people in all industries have forgotten that it is not too hard to do "the next right thing" no matter what situation you are in. Seems they are doing that.
SPONSOR
Joined: Apr 2021
Posts: 1,570
Likes: 475
From: Scottsdale, Arizona
2001 E55AMG
We had something identical happen to a warranty customer earlier this year, new engine was covered. Half, a sparkplug ended up being eaten by the motor.
Trenton O. Gibson
tgibson@highline-auots.com
Highline Autos
Direct: 602.909.9216
Office: 480.348.0777
Trenton O. Gibson
tgibson@highline-auots.com
Highline Autos
Direct: 602.909.9216
Office: 480.348.0777
Thread Starter
Junior Member
Joined: Mar 2018
Posts: 21
Likes: 22
From: Canada
2018 E63S
2018 E63s blown engine- Update
I have just heard back form the dealership after a very thorough analysis they agree that the damage was the fault of a bad spark plug and they have agreed to warranty the entire engine!
Apparently MB does not provide new engines so I am waiting for them to source a reman engine . If they can't locate one they will let MB know and one can be built.
So good news, but will take a while to get one.
Apparently MB does not provide new engines so I am waiting for them to source a reman engine . If they can't locate one they will let MB know and one can be built.
So good news, but will take a while to get one.
Member
Joined: Jan 2021
Posts: 232
Likes: 139
From: Arizona
2019 E63S and 2014 CLS 63S
I have just heard back form the dealership after a very thorough analysis they agree that the damage was the fault of a bad spark plug and they have agreed to warranty the entire engine!
Apparently MB does not provide new engines so I am waiting for them to source a reman engine . If they can't locate one they will let MB know and one can be built.
So good news, but will take a while to get one.
Apparently MB does not provide new engines so I am waiting for them to source a reman engine . If they can't locate one they will let MB know and one can be built.
So good news, but will take a while to get one.
SPONSOR
Joined: Apr 2021
Posts: 1,570
Likes: 475
From: Scottsdale, Arizona
2001 E55AMG
Trenton O. Gibson
tgibson@highline-autos.com
Highline Autos
Direct: 602.909.9216
Office: 480.348.0777
Out Of Control!!
Joined: Nov 2018
Posts: 11,435
Likes: 5,345
From: San Francisco Bay Area
2019 C63CS
Based on what I've seen and heard, if there's an extended warranty, they just file a claim instead of spending time and money on an investigation. I'd probably do the same. Makes the customer feel they are getting their money's worth on the warranty. Just don't tell them Mercedes would have covered the engine without spending money on an extended warranty that you may never recoup. Engines don't generally have a habit of blowing themselves up for no reason.
Last edited by superswiss; Sep 19, 2025 at 03:26 PM.
MBWorld Fanatic!
Joined: Jul 2013
Posts: 2,594
Likes: 811
From: Toronto, Ont, Canda
go fast grocery getter wagon
I have just heard back form the dealership after a very thorough analysis they agree that the damage was the fault of a bad spark plug and they have agreed to warranty the entire engine!
Apparently MB does not provide new engines so I am waiting for them to source a reman engine . If they can't locate one they will let MB know and one can be built.
So good news, but will take a while to get one.
Apparently MB does not provide new engines so I am waiting for them to source a reman engine . If they can't locate one they will let MB know and one can be built.
So good news, but will take a while to get one.
Last edited by bobblehead; Sep 19, 2025 at 04:09 PM.
MBWorld Fanatic!
Joined: Mar 2011
Posts: 2,503
Likes: 1,580
From: Canada
2023 E63S Wagon
yeah. Another member here in Canada went thru the same issue with full engine replacement. MB Germany had to find a used one and then reconditioned it and then sent it to Canada. That took over 2 months to source the engine and by the time it was at the dealer and mounted onto the car, it was over 3 months process
I had the S213 transmission replaced, it took a couple months.
Both said "Reman" on the paperwork.
For the S212 job I had a C300 loaner.
For the S213 I did not press for a loaner and ended up just driving the S212 when one was not forthcoming. I figured let someone else who _really_ needed a loaner get one. Plus, an S212 is a lot more fun to live with then a C300.
MBWorld God!
Joined: Dec 2019
Posts: 32,406
Likes: 6,337
I have just heard back form the dealership after a very thorough analysis they agree that the damage was the fault of a bad spark plug and they have agreed to warranty the entire engine!
Apparently MB does not provide new engines so I am waiting for them to source a reman engine . If they can't locate one they will let MB know and one can be built.
So good news, but will take a while to get one.
Apparently MB does not provide new engines so I am waiting for them to source a reman engine . If they can't locate one they will let MB know and one can be built.
So good news, but will take a while to get one.
