I see control arm bushings fail on more later model vehicles then I think I should. Alot of them are under 60K miles. I think it has to do with bads roads, poor driving habits, and perhaps cheap, overpriced parts. Some bushings can be pressed out of the control arm and replaced,(once the control arm is removed from the vehicle) and others are serviced by replacing the control arms itself. My observation is this problem is more of a concern with domestic brands then in import brands. Either way I'd be less then pleased with only 40K.