The lowest price online that I see for a 2008 350z is 17k. Majority of them are still around 20k, and we're talking about a car that got a lot of major upgrades the following year.

Not that it matters to me at all other than less money I'll have to pay to register/insure it, but this chart looks a wee bit off to me.

Yeah, this is a little off. Look at some of their other cars and their depreciation prices. They aren't even close.

Who cares? When i buy a vehicle i don't worry about resale because i buy it to drive - not as an investment. If/when it comes time to sale/trade then i'll worry about it.

I bought my Dec 04 350 new at 30K, sold it in Oct 07 at $15500. 44K miles

KBB is usually fairly unreliable, so I wouldn't worry too much about it. On some cars they are horribly optimistic, and on some it's terribly pessimistic.

They are all Guides, nothing more.