While accelerating to highway speeds, the vehicle suddenly experienced a significant and continuous loss of power. Even with the accelerator fully pressed, the vehicle would not increase speed beyond roughly 50 mph. Based on the behavior and previous service history, the issue appears to be related to the engine, fuel delivery system, or overall powertrain. The incident created a serious safety concern for both the occupants and surrounding traffic. The vehicle could not properly accelerate, merge, or respond to normal highway conditions. Hazard lights had to be activated, and the vehicle remained in the slow lane for an extended period to avoid faster-moving traffic. The issue was consistent and repeatable throughout the drive. Multiple attempts to accelerate resulted in the same lack of response, and the loss of power persisted for the duration of the trip. The vehicle has not yet been inspected following this occurrence because when turned off and turned back on, the issue goes away and happens sporadically. It is also worth noting that the vehicle previously underwent a manufacturer-covered repair involving the high-pressure fuel pump, for which a warranty extension had been issued. This loss of power occurred after that repair was completed. No warning lights, alerts, or prior symptoms were present before or during the incident. Overall, the sudden loss of propulsion at highway speed posed an immediate safety risk, as the vehicle was unable to maintain appropriate speed or safely maneuver with traffic.

Source: NHTSA complaint ODI #11726871 · view all complaints for this vehicle at nhtsa.gov

The contact owns a 2023 Genesis G70. The contact stated that while the vehicle was parked inside the garage, the contact discovered that passenger’s side headlight was cracked and there was moisture inside the headlight. The contact stated that the moisture inside the headlight affected the operation of the turn signal. While the indicator was engaged, the message "Blinker Compromised" was displayed, and a triangle with an exclamation point was illuminated. The dealer was contacted and informed the contact that the cost of repair was not covered because the vehicle was not under warranty. The manufacturer was made aware of the failure by phone. The failure mileage was approximately 54,000.

Source: NHTSA complaint ODI #11764712 · view all complaints for this vehicle at nhtsa.gov

The vehicle experienced a sudden emergency braking intervention on the highway. Alert came on and it said emergency breaking with curved red arrow and the car slowed down from around 70mph-60mph. Lane assist was on but the car was not on cruise control. The problem was resolved after pressing the accelerator. I was not hit but the could have been a dangerous situation if someone was right behind me.

Source: NHTSA complaint ODI #11744691 · view all complaints for this vehicle at nhtsa.gov

While driving my Genesis G70 on the highway in rainy conditions, the vehicle repeatedly loses traction and hydroplanes at normal highway speeds. The car begins sliding across lanes with very little control. During a prior incident, driver-assist features (lane keeping assist) were active. Rain appeared to interfere with the sensors, and the system malfunctioned by steering incorrectly. The steering wheel became difficult to control, and the vehicle attempted to steer into another lane while traction was already compromised. The vehicle hydroplaned across multiple lanes of the expressway, creating a high risk of collision. The system’s steering input did not match driver intent and made the situation more dangerous. The vehicle ultimately came to a stop near a wall but avoided impact. After this incident, I turned off the lane keeping assist feature. However, the problem continues. On a separate occasion, while entering the highway in rainy conditions, the vehicle immediately began sliding again, indicating an ongoing traction or stability issue even without driver-assist features active. This issue has occurred more than once and creates a serious safety risk to myself and others, as the vehicle becomes difficult to control and does not maintain proper traction in wet conditions.

Source: NHTSA complaint ODI #11734626 · view all complaints for this vehicle at nhtsa.gov

There is a constant wheel bearing-type noise that is distractingly audible above ~40mph, and the whine is load and annoying at ~80mph, coming from the rear of the car. There is a constant droning and harmonic pulsating noise that cannot be attenuated with the car's active noise suppression technology, either. It is an otherwise wonderful car, but this whining is going to become more of an issue now that summer is here and the windows will be down. The pitch of the whine increases in frequency as the road speed increases, and right/left steering movements or accelerate/de-accelerate activities don't seem to affect the intensity of the rearend bearing noise. The ever-present noise (our mileage of just over 25k) has grown over the last ~5k miles to be rather unpleasant inside of the cabin, and our current scheduled maintenance visit did not produce a solution for the ever-present noise.

Source: NHTSA complaint ODI #11672795 · view all complaints for this vehicle at nhtsa.gov