2024 Hyundai Sonata Hybrid

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 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)