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.
Toyota cars are some of the safest on the road in the US according to the safety statistics -- even if (big if) some of them had problems with "unintended acceleration".
This tells us that even if (big if) the issue was real, it was actually never important. Also funny that it never was an issue outside of the US.
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.