This is completely normal for new vehicles, and after I bought mine i started the same thread on this forum, so if you search for it you'll find numerous responses indicating that this is normal. It shouldn't last more than a few months though, but it depends on how much you drive, and if you take it for some long highway trips it should go away faster than if you drive short city trips.... nothing to worry about, it'll go away in a few months!!
Here's the link to my original thread:
zerothread/331723