The Insight has a "goodwill" extended 10 yr. 150k mile battery warranty...which you can't use
Depending on the pack failure mode you may be riding only on the 12v battery...good for a few dozen miles.
"The owner says he had the battery pack specifically tested at 120K"
Poppycock. The IMA constantly checks subpack volts and temps.
The only other test is to open up the battery and and compare subpack voltages, which should be within a few millivolts. I really doubt that this was done.
New pack is $2,500~$3,500 from the dealer
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