Kelley Blue Book is quite fond of its used vehicle valuations, so it should not have surprised anyone when KBB whipped out its latest "Blue Book Market Report" for July.

We'd Reckon KBB's Used Values for the Fisker Karma Are Way Off the Mark

We'd Reckon KBB's Used Values for the Fisker Karma Are Way Off the Mark

But it surprised us.

You see, KBB basically stated that plug-in vehicle depreciate at an extremely rapid rate, which is supposedly shown in the chart above.  However, KBB largely ignored the impact of the federal government's $7,500 tax credit.

When we examine the chart, we see what looks like a graphic showing us how well plug-ins hold value, at least compared to what most of them were purchased for after incentives.

Admittedly, we think KBB way overvalued the Fisker Karma, as there's no chance we'd ever cough off that amount of cash on a new one, let alone a used one.

Aside from the Karma, LEAF values seem a bit on the low side, but the rest of the plug-in pack appears to be doing fine.

What's your take?