The contact owns a 2006 Hyundai Sonata. The contact stated that while driving at 65 mph, the vehicle fish tailed out of control. The rear driver's side wheel struck the inner wheel well and subframe. The contact slowed the vehicle and moved the vehicle onto road shoulder. The vehicle was towed to an independent mechanic to be diagnosed. The mechanic stated that the upper control arm fractured due to corrosion. The subframe and fuel tank were also corroded. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 112,000.

- Halifax, MA, USA

The contact's girlfriend's daughter owns a 2006 Hyundai Sonata. While making left and right turns, the vehicle became difficult to maneuver and the ABS indicator illuminated. The contact jacked the vehicle up to inspect underneath and noticed corrosion on the rear control arm, which had separated from the vehicle. The contact called tarbox Hyundai (3665 quaker ln, North kingstown, ri 02852, (401) 826-1500) who stated that there were no recalls on the vehicle. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 110,000.

- Coventry, RI, USA

Thumping noise from rear of car almost all the time, all road types and all speeds. Dealers will not acknowledge that the know about such problems. Seems to happen during hot weather(above 80 degrees) has been going on at least 3 years and getting worse. Many complaints on edmonds.com but Hyundai service tech at pinehurst refused to recognize that as a valid site. Most people that ride in car get scared that car is going to come apart. Wife works as realtor and is affected by problem.

- Sanford, NC, USA

The Hyundai Sonata mine is an'06 has a strut problem in that it "thunks" on certain road surfaces and back into or out of driveways, I have tried in vain to get Hyundai corporate to do something about this problem only to fall on deaf ears, the edmonds car space forum is full of complaints about his problem. Factory reps say they cannot hear anything, dealers say there is nothing wrong with the car and it is up to corporate to issue a recall on these vehicles. This is a totally frustrating problem that they see fit to ignore and yet they have tsbs on two other of their vehicles with the same identical problem but choose to ignore the Sonata and Azera which have the same problem. Everybody on the forum has tried in vain to get Hyundai corporate to do something about, but nothing we can do is moving them.

- Ventura, CA, USA

The contact owns a 2006 Hyundai Sonata. While driving 20 mph, he heard a loud banging noise coming from the rear of the vehicle. The contact stated that the noise was louder while making a turn with a passenger seated in the rear. The dealer inspected the vehicle on two occasions; the first time they were unable to diagnose the failure and the second time the dealer adjusted the rear suspension. The suspension adjustment failed to solve the failure. As of October 9, 2007, the dealer had not repaired the vehicle. The failure mileage was 12,000 and the current mileage was 16,997. The dealer stated the front right door lock inoperable, passenger seat area makes a rattling sound, right trunk trim vibrates when vehicle in motion and hears knocking sound in the engine. Updated 10/23/07

- Bointon Beach, FL, USA

Thumping noise and vibration from rear suspension on bumpy roads. Feels similar to what you might experience if the gas tank were loose, or exhaust hit undercarriage of car, or if spare tire were loose in the trunk. Became more noticeable in warmer weather, and after 5000 miles. Seems to have no effect on handling or stability. Returned car to dealer. Dealer acknowledged several complaints, but insisted that it was a characteristic of suspension design and nothing was wrong nor could anything be done to correct the problem.

- Pittsburgh, PA, USA

Rear suspension has annoying and loud thumping noise when going over bumps under 40 mph. Started noticing noise within 1000 miles after purchasing vehicle, which was on 10/26/05. Manufacturer has admitted the problem in a BBB arbitration hearing, case no. Hyu0641565 dated 04/27/06 and stated it as a characteristic of the vehicle. Also in a telephone conversations with a regional representative and others as a problem. Took the problem to dealership, who could not find the cause and did not put it on the work orders. Therefore, I lost the arbitration hearing, even though they told me personally that Hyundai told them not to do anything, because they do not know what to look for in terms of the thumping. What automobile manufacturer would incorporate a noise in their vehicles as a selling feature and state it's a characteristic of the vehicle? if Hyundai does not know the cause of the rear suspension noise, then they do not know if a safety factor is involved. The suspension could and probably is defective in some way.

- Campbell, OH, USA

1. rear passenger side repeat rattling thumping noise in suspension at speeds below 40 mph causing disturbance and agitation to cabin driver or passengers 2. rear passenger side droning-humming echo noise more noticeable over 40 mph and at steady maintained speed causing disturbance and agitation to cabin driver or passengers 3. sloshing noise of gasoline in gas tank after the gas tank is filled and a grinding noise when the brakes are depressed in and around the gas tank area after the gas tank is filled causing disturbance and agitation to cabin driver or passengers.

- Philadelphia, PA, USA