Is this kind of corrosion on the engine acceptable on a brand new Mercedes?

linkinpark

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I noticed these spots on the day I picked it up from the dealer. Is this normal for a brand new car? It turns into a white powder as soon as I touch them and there doesn't seem to be any pitting under the spots. The dealer says it's nothing to be concerned about and can be easily cleaned.
Thanks.

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Moto Guzzi

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I noticed these spots on the day I picked it up from the dealer. Is this normal for a brand new car? It turns into a white powder as soon as I touch them and there doesn't seem to be any pitting under the spots. The dealer says it's nothing to be concerned about and can be easily cleaned.
Thanks.

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Sorry, no its not acceptable, the car got driven got dirty, they cleaned the engine bay/wash it and let it sit to corrode.
Take it back.
 

Stokstert

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Or the car was parked in salty/corrosive surrounding, maybe next to the sea for a while before delivery.
 

linkinpark

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The obvious response to that assertion would be to ask why they didn’t easily clean it off before delivering it to you.

That is a good point, I'm taking it there tomorrow to hear what their plan is to clean it.
 

linkinpark

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Sorry, no its not acceptable, the car got driven got dirty, they cleaned the engine bay/wash it and let it sit to corrode.
Take it back.

Taking it to them tomorrow, they're most likely going to say they'll clean it up.
 

Jewpacabra

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Looks like a coating from the factory peeling off. Seems to be on replaceable aluminium parts too so it shouldn't be an issue. At least it's not on the frame or body panels.
 

GhostSixFour

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It was, it sat in a port in Germany for about 10 days before being shipped here.

Really. It sat next to the ocean, for 10 days, then got loaded onto a ship and travel here by sea. And the littlest corrosion is bothering you?
 

SauRoNZA

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That's pretty normal and you are stressing over nothing.

Car would look like that if it slept outside for a single night under your ownership I bet.

****

Also for the love of god don't try to "fix" it in any way. It will just cock up other stuff.
 

eg2505

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concerning, especially on a new car,
what to do?, get them to acknowledge it, in case something fails later on down the line,

getting evidence is a start, getting them to pay for it is another challenge.
 

Jchan11hk

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To be honest, Aluminium should not corrode under normal condition, and it has a layer of Aluminium oxide on top of it to prevent this type of corrosion.

However, it looks like some acidic fluid splashed onto it, and ate away that Al2O3 layer.

I would let them know and if they are going to replace it, then it is fine, if not, it wont make much of a difference in terms of structure.
 

linkinpark

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Thanks, the reason I created this thread was to find out if the corrosion is something I should be concerned about or not. I'm not a car fundi, so I have no idea how serious it is.

If it's nothing to worry about, then i'm completely happy, but if it's something that might be more serious or affect performance/reliability in the long term then I would have to escalate it with the dealer.
 

gregmcc

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Nothing to worry about. If anything fails later it wouldn't be because of this, besides anything failing would be covered under warranty if its a new car.
 
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