I have to think it's that low because Isuzu doesn't produce passenger cars in the US anymore. Probably shouldn't have even been an option in the survey. You can imagine how the question would sound:
"What do you think of Isuzu?"
"Who?"
"Isuzu - they used to produce their own trucks years ago, then started selling rebranded GM stuff for awhile before going out of business in the US. So what do you think of the quality of this brand that couldn't survive?"