general problems of the 2015 Hyundai Genesis

The vehicle exhibits a severe vibration and shaking at normal highway speeds, most notably around 70–80 mph. The condition is repeatable and occurs during steady freeway driving. The vibration is strong enough that the vehicle feels unstable and unsafe to operate at typical highway speeds. This condition significantly affects safe freeway operation. Due to the severity of the shaking, I no longer feel comfortable or safe driving the vehicle at or above normal traffic speeds, which increases risk when merging, maintaining speed with traffic, or responding to road conditions. The problem has been reproduced and confirmed by authorized dealerships. Multiple inspections and repair attempts have been performed over several months for the same vibration concern. Major drivetrain components, including the rear differential and driveshaft, were replaced, but the vibration remains unresolved. The servicing dealer has stated they do not have a further diagnostic path and are unable to continue addressing the issue. The issue has been ongoing since approximately November 2024 and has not been resolved despite repeated service visits. No warning lights or messages are present. The vibration is speed-dependent rather than engine-speed-dependent. The vehicle remains available for inspection upon request.

The front end of the vehicle is unstable due to constant vibration which is felt in the front drivers seat and steering wheel. The vibration causes the tires on the front end to wear prematurely, which could lead to blowouts.

When driving during heavy rain on the expressway the car begins to fishtail out of control. It forces the driver to drop their expressway speed to about 45 miles per hour. All the other traffic continues to pass by safely at speeds of 60 to 65 or more. This is a definite safety issue. When it began, I was nearly rear-ended by a semi when I was force to drive slowly in the right lane at only 40 to 45 in a 70 mph zone. If I dared to even try to go any faster the car would begin fishtailing. None of the other traffic had any issue going faster, and I never experienced this in the 2013 Genesis I had previously. I have read of similar complaints and have been told that the car is reacting to its front sensor being 'blinded'. This is definitely a design flaw, and there does not appear to be any way to disable or inform the censor to ignore the present situation.

After tire recall and computer update we first noticed a vibration or shudder for the first few miles. Dealer eventually changed 23 separate tires and problem persists. M. Stahl of Hyundai states this is a characteristic of low profile tires. Electrical problems began showing up on a rotating basis. Including, park assist not working regularly. Ventilation changing on its own. Blind spot indicators not working. Rear windows not working. Heated seats not heating. Dash display changes on it's own. Folding mirrors not folding as they should. Car went dead once. Zero acceleration twice when merging into traffic. Smart trunk not functioning. Vents blowing ice cold air without ac being on. Most of these have been photographed or videod. Dealer employees have also witnessed most of these. Occurrences have been in all driving conditions from stationary, back roads and highways. I have all repair orders documenting over 60 days of loss of use while car was at the dealer.