Rattle noise

[c43amg84]

I have noticed recently when accelerating I am hearing a metal rattling noise coming it seems the front or side of car, I cant exactly work it out. Any ideas?

My car is a C43 (2017)

 

[whitenemesis]

Loose exhaust manifold heat shield?

 

[c43amg84]

Yeah potentially, anything else it could be apart from that?

 

[MarkyMark84]

If you rev the car when stationary do you hear the noise?

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[c43amg84]

If you rev the car when stationary do you hear the noise?

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No it only happens when moving? Sounds like its coming from passenger side?

 

[Gbrowncls55]

Go under the car (safely!) and tap the exhaust shield to se a) if its loose or b) if its touching the exhaust. I have found on all the Mercedes I have had (5) that if you go through a deep puddle at any sort of speed the water can force the shield up quite easily leading to a rattle /noise usually on acceleration as the torque move the engine on the mounts. Apart from that it could be the undertray or almost anything else.