It might even mean that the car hasn’t accrued any
miles on it, because it measures in kilometers
instead, like how my car has an option on the
speedometer for either miles per hour or kilometers
per hour. Just kidding! lol
Why not just talk to the dealer and ask them why
they put “N/A” in the description? It's likely what
F_O_R said, but it couldn’t hurt to see what they tell
you. Hopefully obvious point here, but any reputable
dealer will give you an honest answer, even if it may
seem silly or stupid. Trust the CarFax, and trust your
gut; if the dealer/seller seems a bit fishy, he/she may
very well be, and hiding who–knows–what from you.
When in doubt, and I can’t stress this enough:
always, always, ALWAYS take it for a test drive —
around your city, on a highway or interstate some,
everywhere you can think of. Even if the dealer
comes with you. At best, you’ll know how it drives
and how well it handles wherever you may drive (if
you were to purchase). Merely taking it simply
around the block — as I’ve seen some folks do here
— certainly will not give you a better feel of what
may be wrong with it (or what repairs are likely to be
necessary).
Best of luck!