There is no specific answer different car makers go to more trouble than others to stop rust and so this means some brands go rusty faster than others. Fait for example use to be terrable for rusting out really fast don't know what they are like these days tho. However if you take any car near salt water it rust faster than if you don't. There are things you can do to make any car last longer tho, you can have the pannels taken off by a pannelbeater and they put like a wax type product on the car, this seems to make a huge difference. Hope this helps :)
Copper doesn't rust
If they are an alloy, they will eventually rust.
How long will it t take a quarter to rust in fresh water
a long time
It depends on the quality of the nail. If it is painted it Amy take long to rust. In general it may take a month or so for the nail to rust.
a week it take or two
50 years
5 months
Cannot rust. No oxygen or water.
about 14 days
it will probably take at least 5 minutes for a needle to rust unless it is copper.
depends on the amount of oxygen and water supplied . If left in normal condition it may take 5 days to rust