I went into the dealer to get an oil change on 3/14/2019. The dealer chose to do a factory recall 50hyz. Soon as I left the dealer my car started stalling on 495 North towards tyson corner in Virginia, jerking and lost drivetrain power. I could get to 60mph and the car wouldn't respond after that. I took the car back to the dealer. I was told the software updated bricked my Sonata. The dealer told me they will order the part and will come in 3/21/2019 which is today. Only to get a call saying the part is on back order into May. My question is why isn't holding Hyundai accountable for this" my car isn't the first one to get this software update so if Hyundai knows this software is going to brink peoples car how in the hell are they allowed to keep doing this recall when they have no clue when the part will be available"

- Brandywine, MD, USA

Vehicle fails to accelerate or acts as if it is going to shut off and just recently I got in vehicle started it and the check engine light came on. Vehicle shut off while starting it finally it started up I took it to auto zone to read the code. They advised me the code P200A is very common among Hyundai and it most like is the vcma that needs replacement. After doing further research there are many complaints about the vcma failing and having to be replaced. My warranty is up on my vehicle and I feel this is something that Hyundai needs to address as soon as possible given this is a common issue and could cause harm to driver or others while driving that vehicle. Also when attempting to accelerate and the vehicle fails to do so there is a rattling noise when pressing the gas petal.

- Houston, TX, USA

Loss of acceleration between 3-4 RPM.. hard acceleration..loss of acceleration before shifting between 60-70mp.. then slowly accelerates. Major problem if on highway where you must speed up but car not quickly shifting gears and is running too slow.

- San Antonio, TX, USA

Https://youtu.be/Z4thv5A3lrk dynamic cruise control that stops and starts in bumper-to-bumper traffic is what sold me on this car. Lamentably, I did not know Hyundai excludes aeb from hybrid ltd ultras. As the video shows, frantic beeping from the forward collision warning system was not accompanied by any braking at all. I slammed on them too late. I was in DCC mode when the warning sounded. DCC can gradually slow from freeway speed to a stop and resume, but fcw apparently cancels DCC's braking! this must be no more than a difference in software between gas-only and hybrid ltd ultras because all sensing and control hardware are identical. Hyundai's response to my inquiries are just repetitious confirmations of what I already discovered the hard and expensive way.

- San Francisco, CA, USA

The contact owns a 2016 Hyundai Sonata. While driving various low speeds, the vehicle hesitated to accelerate. Upon attempting to accelerate rapidly, while depressing the accelerator pedal, the vehicle decreased in speed. The vehicle was taken to shortline Hyundai in Aurora, Colorado where the vcm was updated. The manufacturer was made aware of the issue. The failure mileage was 7,965. Updated 8/13/18

- Denver, CO, USA

As I am riding along at a steady rate, all of a sudden the car will slow down. Sometimes it slows 5-10 mph and starts to accelerate. At other times, it will slow to a complete stop. Before going on vacation, I took it to pantili Hyundai in princeton, wv and they did a computer update and told me it was fine. I drove to memphis, Tennessee and it started doing it again. On my way home, we stopped in chattanooga for lunch. When crossing a busy intersection, it nearly stopped. A gas truck was approaching as we barely made it across to our side of the highway. Fortunately, there was shoulder room to move to until it decided to go again.

- Princeton, WV, USA

The contact owns a 2016 Hyundai Sonata. While driving 35 mph, the vehicle would not accelerate beyond 35 mph. The vehicle was not diagnosed or repaired the manufacturer was made aware of the failure. The failure mileage was 29,734. The VIN was not available. Updated 04/18/17 lj updated 09/07/2017

- Jackson, MS, USA

ECM issues. Car had ECM problem and lost power. Went into the dealer, and they said they repaired it. Didn't even make it home from the dealer and it happened again. Back to dealer and they said again it was repaired. Car had 10,000 miles on it at the time. Less than 3,000 miles later, it happened again - car completely shut off on the highway. Complete loss of power. Dealer claimed it was the same problem and "fixed" it with a software update. Now scared to drive it - considering lemon law? three problems in 6 months on a brand new car, and same problem every single time.

- Brentwood, CA, USA