I've been doing some searches about car safety and fatalities. Just to clarify, I am not trying to prove anything and I have nothing against the Insight. My Civic is also a pretty small car.

According to the NHTSA, the only other vehicles that fall into the Insight's class (mini passenger car) are the Ford Festivas, Geo Metros and the Suzuki Swifts (all from the 90s). The only car that beat the Insight in any category was the Ford Festiva in the passenger frontal crash rating (5 stars). The only tests that were worse were the driver frontal cash rating (3 stars) for the Geo Metros and Suzuki Swifts. I believe these are pretty much the same vehicle. (A lot of the cars were not fully tested.)

I also found an interesting link from the Insurance Institute for Highway Safety/Highway Loss Data Institute.
http://www.iihs.org/research/fatality_facts/occupants.html

There is an interesting plot of fatalities versus time. I believe these are absolute numbers (not scaled to total number of vehicles).
Here's another plot of fatalities for different vehcile sizes and classes. This one is scaled to the number of registered vehciles per size and class.