One problem related to brake disc has been reported for the 2004 Hyundai XG350. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Hyundai XG350 based on all problems reported for the 2004 XG350.
Brake rotors keep going out of parallel, (warpage) causing the steering wheel to shake upon applying the brakes. Manufacturer has been notified,on 1/20/05 and has denied repair or replacement of defective brake rotors.