NEw Owner Help!!

Hey Everyone I'm a toyota Owner looking to buy myself into the Scion category but have a concern.

I'm looking to buy a private to private 2006 Scion WT-I Tc Manuel from someone with approx. ~39,400 Miles on it already. she says moving away because family is in military and moving because her hubby was stationed in Iraq and going to Puerto Rico but army will let her only move one car there so trying to sell this one quick going for $11,500.00 . Which I don't think is a bad deal buuut here's the thing. There is a Failed Emissions test on their VIN record
only a year after the person bought it. They are a second owners of the Car. but I'm now wary.

03/29/2006 LEESBURG, VA
Motor Vehicle Dept. REGISTRATION EVENT/RENEWAL
04/06/2006 LEESBURG, VA
Motor Vehicle Dept. TITLE 4 Miles
08/23/2006 LEESBURG, VA
Motor Vehicle Dept. TITLE 11,233 Miles
REGISTRATION EVENT/RENEWAL
05/11/2007 STERLING, VA
Independent Emission Source 25,956 Miles
FAILED EMISSION INSPECTION
05/18/2007 LEESBURG, VA
Motor Vehicle Dept.
REGISTRATION EVENT/RENEWAL
05/18/2007 STERLING, VA
Independent Emission Source 26,442 Miles
PASSED EMISSION INSPECTION
10/09/2007 STAFFORD, VA
Motor Vehicle Dept. TITLE 31,431 Miles
REGISTRATION EVENT/RENEWAL



What do you guys think? Back out or go with it? It really strange that a Car this new would Fail a emissions inspection only a year after but i don't know if its due to them just riding it really hard and throwing on 25,000 + in a single year or maybe a deeper problem??

Help! i don't want to buy a bogus car!