Working on a 2002 mini cooper.
Replaced the control arm bushing without dropping subframe.
There are 3 bolts that attach the bushing bracket. The piece highlighted below gave way and snapped off.
Attempted to remove the other 2 bolts - broke the SOCKET. Safe to say those aren't coming out. Anyways, I got the new bushing in, bracket feels solid with the existing 2 bolts that hold it to the frame.
Realistically, should I be worried that this one bolt gone is going to cause any issues ally?

 

I don’t think what you circled is a bolt. The two on the left are really tight. I had the subframe out and it took a 3 ft breaker bar to break them loose.

It’s also tough to remove the bushings and get them back on without the subframe removed. I would suggest you consider removing the subframe to replace the bushings.

 

I personally would drop down the subframe and remove the broken bolt.

 

When I didn’t have a bolt in that tab area it would drift left and right on accel and decel pretty scary when u end up in another lane

 

Can you not have the tab welded back on? I personally would not drive the car with such an important piece of the suspension compromised.