Recently the Fait 500 has been getting a lot of press due to the 3 star rating given by the NHTSA but 4 Star by the IIHS. The Fiat really is an unusual car for the US using some new age tech in the power steering rack and power steering pump not to mention the rest of the car. The issue is that these two organizations use similar tests but they are different enough to reveal some serious issues.
Crash tests are designed to do just what they say. They test the ability of a vehicle to take a big hit at certain speeds. The problem with this is that it does not give the total results that are needed to know how a vehicle will react in a real world crash. The placement of a crash in the car is what will really dictate how the safety features. The NHTSA and IIHS are both trusted to test vehicles but just the placement and the speeds used in the tests. In the case of the Fiat 500 it is more about the height of the barrier than anything else, at a low point the little fiat does fine but when higher it causes massive damage.
The issue with this small height change is that this car is meant for the US, and we all know that the US loves their SUVs. Not only do we love them but we are not willing to give them up even when gas hits $4 a gallon. They have high front bumpers and very heavy weight behind them, so for the car world it makes very dangerous conditions. A crash test rating may be 5 star but from a vehicle that is the sale height, a much higher one will impact in an area that is mainly glass. This means there is next to no protection at all for the driver. The main thing to realize about crash tests is they can only tell us so much and it is up to all of us to keep the roads safe. Keep driving distractions like cell phones out of our hands, vehicular safety is only as good as the accident that can be avoided. The best crash safety is the crash you never have. 
