To the extent that cars do on the road no not at all. A dishwasher is not getting hit with gravel at 60mph and splashed with mud.

But it is being exposed to harsh cleaning agents all the time. The wear might be different, but let’s not pretend they’re sitting there in the middle of a kitchen unused.

Your claim was also, explicitly:

> but if you scratched your dishwasher and subjected it to water and salt I bet it would.

That is literally what happens every day. All the time.

You win you win you win

Dishwashers work by spraying high pressure jets of water filled with abrasives. Water which is usually also full of organic compounds of many varieties.

I'd say the conditions are not dissimilar.