If you're concerned about safety, look into the stats. With the number of accidents happening overall, I wouldn't be surprised if even a known flaw doesn't increase risk a whole lot. There's probably dominating factors, such as location (weather, etc.) and distance driven at which times, or which model of vehicle.

Maybe I'm wrong and this is a significant risk, but the approach should be the same. Even if they found and fixed one problem, the stats would still tell you which cars are safest. It could very well be that other vendors are worse, just haven't been investigated.