Sorry to hear that your car reached the end of the line! If you decide to buy a new Hyundai the 10-year, 100,000-mile Hyundai powertrain warranty will cover the CV joints in your car in most cases. However, Hyundai may deny the claim if the boot on the CV joint is torn, as this is usually deemed general wear and tear.
General wear and tear and maintenance are not covered under any Hyundai warranty. The warranty only covers defects to the vehicle due to poor workmanship off the assembly line.