c63 rattling
Thread Starter
Junior Member
Joined: Oct 2019
Posts: 17
Likes: 3
C63 AMG W204
c63 rattling
Hi all, although not my car or video, I have the exact same noise and symptoms as in the video below coming from my C63. Any ideas what it could be?
Thanks
https://youtu.be/5F1Ssi_h0uo
Thanks
https://youtu.be/5F1Ssi_h0uo
MBWorld Fanatic!
Joined: Apr 2015
Posts: 1,217
Likes: 147
2012 c63 AMG, 2011 GLK 350, 2019 GLS 450
Hi all, although not my car or video, I have the exact same noise and symptoms as in the video below coming from my C63. Any ideas what it could be?
Thanks
https://youtu.be/5F1Ssi_h0uo
Thanks
https://youtu.be/5F1Ssi_h0uo
Senior Member
Joined: Jan 2018
Posts: 415
Likes: 109
From: Whitehouse Station, NJ
2012 C63 P31 Sedan
Do you have a P31 (AMG Development Package)? It's probably just piston slap from the forged M159 pistons. A few people here have posted about it, myself included. Harmless, but it goes away once the pistons have fully warmed. Forged pistons expand and contract more, so the increased clearance when cold causes them to knock around at bit.
Thread Starter
Junior Member
Joined: Oct 2019
Posts: 17
Likes: 3
C63 AMG W204
Do you have a P31 (AMG Development Package)? It's probably just piston slap from the forged M159 pistons. A few people here have posted about it, myself included. Harmless, but it goes away once the pistons have fully warmed. Forged pistons expand and contract more, so the increased clearance when cold causes them to knock around at bit.
Very confusing symptoms tbh, but it sounds identical to that video and same rev range
Thread Starter
Junior Member
Joined: Oct 2019
Posts: 17
Likes: 3
C63 AMG W204
I'd love to but it only happens in drive. If I'm in P or N and rev there is no noise at all. I open the window to see if I can hear it better but I can't hear it at all, almost sounds like the noise is coming from the dash rather than the engine...
MBWorld Fanatic!
Joined: Apr 2015
Posts: 1,217
Likes: 147
2012 c63 AMG, 2011 GLK 350, 2019 GLS 450
Thread Starter
Junior Member
Joined: Oct 2019
Posts: 17
Likes: 3
C63 AMG W204
No so what I mean is that noise only happens when I'm driving. If I stop and put it in P or N and rev the engine to the same rev range, I don't get that noise at all. Only happens when in D and moving forward power to the wheels
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Super Member
Joined: Mar 2019
Posts: 522
Likes: 129
From: Bondi Beach , Australia
2013 W204 C63 AMG P31 Estate wagon
Yes my cars a P31 package (performance pack, facelift car). It's more noticeable when cold but can still happen when hot, more noticeable in lower gears. Funny thing is I can't even hear it when the windows down, only when it's up. Only happens between 1500-2000rpm and in only in drive (not in neutral if I rev it)
Very confusing symptoms tbh, but it sounds identical to that video and same rev range
Very confusing symptoms tbh, but it sounds identical to that video and same rev range
I've had a few cars with forged pistons and they have all sounded the same especially when cold.
it will only happen with engine under load (in gear and driving) not while free revving.
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Thread Starter
Junior Member
Joined: Oct 2019
Posts: 17
Likes: 3
C63 AMG W204
Mines a 2013 P31 car also with same noise at same revs and I've put it down to piston slap.
I've had a few cars with forged pistons and they have all sounded the same especially when cold.
it will only happen with engine under load (in gear and driving) not while free revving.
I've had a few cars with forged pistons and they have all sounded the same especially when cold.
it will only happen with engine under load (in gear and driving) not while free revving.
Super Member
Joined: Dec 2009
Posts: 748
Likes: 93
From: Dhahran, KSA
2020 E 300 Coupe and 2019 GLS 400
Even though mine is an ML63 (M156 pistons) I had the same issue. Knocking in drive (under load) in the same RPM range. Dealer & indep. shop told me it piston slap.
