The consumer's Hyundai Sonata developed the following problems: The paint was peeling, the sun roof was broken, the passenger side window was inoperative, the brakes failed, the seatbelt broke, the engine blew up and the air bags failed to deploy. The engine surged. As a result of the engine blowing, the right side disintegrated.

- Webb City, MO, USA

Stopped at red light, when time to go, engine stalled. Attempted to restart unsucessfully. A/C was not running. Car was able to start after 30 minutes. Car was towed to dealership. Dealership was unable to dublicate problem after 15 miles.

- Montclair, CA, USA

The engine does reliably accelerate when the accelerator pedal is pressed. Sometimes there is up to a 3 second delay before the engine responds to commands from the accelerator pedal. At times the engine also accelerates very sluggishly compared to other 2003 4-cylinder. Hyundai Sonatas that have been tested. Hyundai hasn't corrected this problem despite many attempts.

- Cedar Rapids, IA, USA

Engine misfiring

- Louisville, KY, USA

When vehicle is parked for over six hours, then upon starting vehicle and driving, vehicle would stall.vehicle has been taken to the dealer on three occasions, but problem is recurring.

- Coraopolis, PA, USA

Engine check light comes on when driving vehicle.

- West Memphis, AR, USA

While traveling on the highway and without prior warning, especially when going up hills, the vehicle lost power, it happened at least 5 times. The dealer stated there was no repair and to make sure the vehicle always had a tank of gas before going up a hill.

- Henderson, NV, USA