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I bought a Mustang Mach-E two days ago. Been very happy with it, except it rained last night and today the brake disks are covered in rust on all four wheels. We do live near a salt water bay, but my VW Atlas, which is parked right next to it, has never had this issue. So a few questions:

  1. Is it normal for the rotors to rust so quickly?
  2. Does the rust compromise the braking function at all?
  3. Other than driving it (and braking) is there anything I should be doing to prevent or counteract this? (I know not to put any coating on the brakes.)

Thanks!

P.S. Yeah I know I should keep it in a garage, but unfortunately that's not an option.

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Aaron
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2 Answers2

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Many cars do that in very short order. It's just light surface rust that gets rubbed off the first time you brake.

Bare metal, often hot, plus water and even salt makes for quickly forming rust.

Perhaps your VW uses a different alloy that doesn't rust so quickly.

jwh20
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I think it's normal. Dealers coat the discs with oil to prevent them from rusting, but during handling and fitting, the oil can rub off and the discs start to rust. Logically, this protective layer also wears down during braking, so if the weather is humid and the car is not used for a while, the discs can rust.

Juandev
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