While driving straight down a newly paved access road at approximately 20mph, the control arm broke free of my rotted/rusted out subframe. I have recently had the car in for an alignment, and brake work and no problem was detected with the rusted subframe. The car immediately seized up as the wheel slammed into the wheel housing and the car came to an immediate stop and was immobilized. The car is now in the shop and I am contacting Hyundai directly regarding the unlikely fact that many drivers are experiencing this very dangerous problem. I suspect that this problem will be increasing dramatically in the near future as the Hyundai Sonata's 1999-2001 continue to age. I have noted at least a dozen instances of complaints regarding this issue online and almost all instances appear to be very dangerous.

- Saratoga Springs, NY, USA

While driving approx 30 mph my front right wheel folded back against the fender, bring me to an abrupt stop. Once I had the vehicle towed to a local shop we found that the sub frame had rusted through and that the control arm had completely broken off of the sub frame. I had to replace the complete subframe on this 6 year old vehicle with only 77000 miles on it.

- Gladstone, MO, USA