2024 HYUNDAI SONATA Complaints

I purchased this vehicle brand new off of the lot February 2024. Since then, I have had two incidents where in the middle of driving my vehicle has completely shut off. The first experience, I was driving 50+ mph. First my headlights went out, my engine shut off, my dashboard shut off, and I was cruising without power or control over my vehicle for about 5 seconds before everything turned back on. I took my car to the dealership where they “could not confirm concern” after driving around for 15 miles trying to recreate the issue. They stated no codes or issues were shown on their end and returned the car to me. 6 months later during late October, my car did the same thing. I was driving 40+ mph and my car shut off in the middle of me driving. I contacted my dealership to inform them it happened again. They told me they did not have any available appointments to bring my car in. Out of frustration I did not bring it in until a few weeks ago for a regular check up. I gave them the exact date and time that my vehicle shut off and they again could not find the issue that caused the car to turn off. I was informed by a Hyundai representative that he anticipates this issue getting worse as it happened twice in the first year of owning it. That when it happens again to get my car towed by Hyundai roadside assistance and straight to the dealership. As stated, I lose complete control of the vehicle. Luckily both instances I have been on a straight road but I have concerns that this could happen at the wrong time leaving my injured.

The DAW (Driver Attention Warning) system is obtrusive and a distraction to safe driving. The alert makes an audible "Beep" and the drivers display lights up with a warning to "Take a break". This alert will continue every 5 minutes if on a winding road until the car is stopped and the engine is turned off. When operating the vehicle in a safe manner keeping my eyes on the road and having the beeping and warning lights distracting me is quite the opposite of its intended purpose. In previous year models this could be turned off by the owner. This is not so with the 2024, 2025 models. This is not isolated to this vehicle but a search of the internet will find many frustrated owners all voicing their concerns. A safety alert system should not become a safety hazard. The dealer has no solution. The alert system cannot be turned off or it's sensitivity adjusted. The manufacturer has so far not responded to my complaints.

The contact owns a 2024 Hyundai Sonata. The contact stated while driving 35 MPH, the check engine warning light illuminated. The vehicle was taken to the dealer to be diagnosed. The vehicle was diagnosed with fuel injector failure. The vehicle was repaired but the failure persisted. The contact stated that on another occasion, the check engine warning light illuminated, and the contact turned off the vehicle. The contact restarted the vehicle after several minutes and the vehicle started working properly. The vehicle was then taken to a dealer and was diagnosed with fuel consumption failure. The vehicle was repaired for the most recent failure. The contact then stated that the check engine warning light illuminated on and off a third time. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 15,395.

The automatic high beams feature seems to work through the camera by the rearview mirror. But the issue is when this camera is blocked, all of the safety systems that use the camera will be disabled as they normally will be since the camera cannot see, but the automatic high beams function will still stay on, the indicator light for it will be green meaning that the system is operating normally. As a result of this, the automatic high beam system keeps the high beams on at ALL times because it thinks that it is dark enough because it doesn’t see any light through the camera. This could potentially increase the risk of a crash because the driver may not realize that the high beams are NOT turning off when approaching another vehicle or when a vehicle is coming the opposite direction, which can blind other drivers on the road. This needs a recall to resolve this problem.

My vehicles speedometer is always reading 1-4 mph faster than the actual speed I am driving at. For example cars speedometer would read 67 but only actually going 63. I’ve noticed it’s always 1mph off but whenever driving the car and turning it off to say get gas and turn right back on, the speedometer will begging reading 3-4 mph faster until leaving the car off for a few hours then it would go back to only reading 1mph faster again.

The speedometer in this car is extremely inaccurate and inconsistent with its accuracy. On some occasions, the speedometer can indicate a +-2mph variance at any given speed (good), while other times, the speedometer can indicate a +-6mph variance at any given speed. (bad) The vehicles true speed was verified by GPS speed data and by manually calculating given each individual wheel speed in the car. Both measured speeds confirmed that the vehicles speedometer was off by 5-6mph. No modifications performed to the car. This is a serious safety hazard as the driver is given inaccurate information regarding the actual speed of the vehicle and can lead to accidents.

I along with other people on various websites have noted that the 2024 N-Line has something wrong with the speedometer. I first noticed is on the waze that is was different. It must have something to do with the internal GPS of the car. I tested it alongside another car and it is indeed off. It happens after driving the car into a place that isn't obvious on the map. I brought the car to the dealership and they weren't able to help. I know there is a slight allowance for speedometer being off, but this is way off. For example, it can show one is going 25, while really going 20. This causes me to have to look at Waze to get proper speed. This is a real issue and if search hyundai sonate N-line speedometer being off, you can find other people talking about this issue. Please really look into this as this is a major concern that falls outside the allowed difference in speedomter and actual speed

I purchased a new 2024 Hyundai Sonata Hybrid Limited in May 2024. At about 3500 miles I noticed the low-beam headlights did not adequately illuminate the road. When driving at night, the low-beams don't illuminate the road signs nor do they adequately have any vertical illumination. When pedestrians are walking on the roadway, the low-beams barley light the calf of a person's leg, but there's no indication of the persons body being illuminated. Using the Hi-Beams, these problems are somewhat resolved. The roadways are better lit, the road signs are better lit and pedestrians are a little more illuminated. I've addressed this with Hyundai, and while there's screw(s) to vertically align the headlamps higher, it seems they are adjusted all the way to the top position. Even if the headlamps could be adjusted vertically, because the headlamps are so recessed under the hood, the hood cuts off any possibility for lights to vertically illuminate people. In my opinion, this is a serious safety issue that's caused by a design flaw and the NTHSA should seriously considering deeming this vehicle unfit for road use at night.

I purchased a new 2024 Hyundai Sonata Hybrid Limited on [XXX]. At about 2000 miles I noticed the speedometer of the car and the WAZE app were reporting different speeds. This is an intermittent problem so sometimes the vehicles speedometer and the WAZE app match and other times the vehicles speedometer and the WAZE App disagree. I've repeatedly taken this car to the dealership where I purchased it complaining about the problem and they can't seem to find a problem. Hyundai documented the problem is with WAZE and there's "DELAY" in the signal from the satellite to the WAZE App, even though I've stated my other vehicles speedometers and the vehicle speed reported by WAZE match. Hyundai documented this anomaly is what gives the vehicle it's "UNIQUENESS." Yet they won't resolve this issue. There are several functions in the car that are dependent on the the vehicle's speedometer being correct and when the speedometer is incorrect, these other functions don't work properly either. I've taken the car onto freeways where there are measured mile postings. Sometimes when the speedometer indicates it's at 60 MPH it takes 60 seconds to traverse the mile. Other times, when the speedometer indicates its at 60 MPH it takes 63 seconds to travel the measured mile. it's not just my car, there are many other customers around the United States that are experiencing this problem and I/we can't seem to get Hyundai to address, fix this problem. My personal opinion is this; Hyundai knew about this problem before they put the car out to the market for sale. So Hyundai knowingly sold a defective vehicle, before they sold the first one of these vehicles. Other HYUNDAI Sonata owners complaining about speedometer [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Hello, thanks for reviewing. I recently bought a brand new Hyundai (VIN provided) and the speedometer intermittently is inaccurate. Maybe 50% of the time, which I would argue is less safe since I can’t reliably tell what my speed is. When it is an issue, it’s worse the faster I drive. It breaks the 10% threshold I’ve read about around 30mph, where it will say 26mph. I brought it to the Hyundai dealership and they claimed they couldn’t replicate the issue so they won’t fix it - but it’s intermittent and I have picture / video proof from multiple dates. I used various speed sources to be sure. I found some Hyundai forums online where many others have the same issue. The speedometer is an important safety feature, not to mention other dependent features, like cruise control. Happy to provide proof by request.