Car hesitates when accelerating; loss of power; non-responsive when trying to accelerate

- Jamaica, NY, USA

Vehicle driver received audio and visual alert while driving at high rate of speed that the "hybrid warning failed and to check hybrid system-turn engine off" and to pull over safely. However, the vehicle locked and lost all power making it impossible to safely exit the interstate almost instantly after the alarm. Upon research, I manage a large vehicle fleet, we have multiple other Sonata's with the same issue-and there is a tsb for this known safety failure (17-hc-003-1).

- Chatsworth, GA, USA

We bought our Sonata in 2017, since then it has gone into "limp mode" (while in motion every time) three times. We took it to the dealership the first time it happened and they claimed it needed a "software update". the update didn't last too long because it went into "limp mode" once again. We took it back to the dealership (as instructed by the dealership) and they refused to provide services until a diagnosis fee was provided; even though they told us to bring it back if it happened again and they would fix the problem at no cost. We refused to pay the fee since they had told us they would fix it for free and the car sat for about a month or two while we used my husbands parents vehicle (since it is our only vehicle). We eventually drove it to a third party mechanic (while being jerked around because the car would lose power and going 20mph in a 35mph zone) and he changed out the knocker rod and head gaskets after stating it was the issue after hooking it up to a diagnostic computer and getting codes to change those specific items. It seemed to work for about five months, until recently when my husband and I were driving on the highway (in traffic) when it went into "limp mode" once more. The dealership decided to take the car in to look at it, provided a rental car and indicated the car needed a new engine before service (because it keeps going into limp mode). They called us yesterday to let us know that it just needed another "software update". I have been told software updates don't resolve the issue, it pushes the problem back and it will reoccur. I have already called and filed a complaint with the dealerships Consumer Affairs department (that the service manager from the dealership gave us) and am waiting for a call back. This car is not safe. I have a toddler and am pregnant and fear for my families safety while driving this vehicle.

- Indian Springs, NV, USA

Engine is knocking around 113,000 miles. This is crazy because it is low mileage.

- Riviera Beach, FL, USA

The car has failed to start on multiple occasions. I enter the car, press the break and the push to start button, and the car fails to ignite. It happens normally when it is colder, but will still do it when it is warmer out.

- Shelbyville, IL, USA

The contact owns a 2015 Hyundai Sonata. The contact stated while driving 70 mph, the vehicle hesitated and decelerated independently. The contact stated that the check engine warning light was illuminated. The contact stated that while depressing the accelerator pedal, the vehicle failed to accelerate. The contact was able to drive to his residence. The contact stated that on another occasion while driving 25 mph, the failure recurred with an abnormal noise. The vehicle stalled and was not drivable. The vehicle was towed to an independent mechanic. The contact was informed that the engine needed to be replaced. The vehicle was not diagnosed nor repaired. The contact called oxmoor Hyundai (8107 shelbyville rd, louisville, ky 40222; (502) 894-3400) and made the dealer aware of the failure. The manufacturer had not been informed of failure. The failure mileage was approximately 111,000.

- Louisville, KY, USA

First I got my tires change 2 on the back and the TPMS has been on since them, and driving from work in the industrial part of town where traffic is high heavy and fast driving in all the my car just quit while driving at 2:30am getting off work, so a guy I work with seen me slowing down and gave me a boost and again before I made it home it quit again and I live 15 min from and when I stoppedi was about 9min away. Lights started flickering and the car shutdown in the middle of ttaffic. So I bought a new battery for almost $200 and that didn't work it started for a moment and went dead in traffic again.

- Blytheville, AR, USA

Vehicle engine light started flashing while driving and vehicle would not accelerate. I was almost rear ended due to the decrease in engine speed. If I didnt quickly pull the vehicle to the grass I would've been hit. I could not drive more than 10mph after the decrease in engine speed.

- Belle Chasse, LA, USA

This is our daughter's car. Yesterday (Nov 1) her car stalled, with the warning "hybrid system warning! safely stop and do not drive". this time she was parked in a parking lot and the warning message came on when she tried to start the vehicle. This is not the first time it's happened. On previous occasions the dealer's technicians did not even record anything in her maintenance records. She understands this is not an unusual problem, with many Hyundai hybrid owners of that same 2015 model year, as well as other years, reporting similar problems. Is this something that is being looked into? the dealer personnel just sort of dismiss this as no big deal.

- Taylors, SC, USA

While driving on the highway the engine light came on the car began to shake and gradually slowed down eventually coming to a complete stop and unable to start back

- Willingboro, NJ, USA

2015 Sonata hydunai engine making noise, will not drive pass 40 mph. Engine is shaking and knocking and the engine light is on. The hydunai dealership doesn't want to consider it's not under the engine recall here in texarkana, Texas.

- Texarkana, TX, USA

The contact owns a 2015 Hyundai Sonata. The contact stated that the vehicle misfired and took a while to start. The service engine warning light was illuminated. The vehicle was taken to an independent mechanic who found an unknown code, and performed a hard reset. The failure recurred. The vehicle was taken to the crenshaw Hyundai dealer located at 330 huffman mill rd, burlington, nc 27215, where it was diagnosed that the cvt sensor may need to be cleaned. The technician looked at the sensor and informed the contact the sensor needed to be replaced. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was unknown.

- Burlington, NC, USA

Just bought car today, 30 mins into drive home, car began to sputter, hybrid system warning light came on and shut the car down completely. Loss of power, in the middle of the hwy. Not safe!! dealership came and towed car, but I an very upset with purchase.

- Tuscaloosa, AL, USA

Oil consumes super fast. Having to put more oil in after oil change and also having to take vehicle back where I got oil change and they add more oil. They checked for oil leaks. No leaks. Checked valve cover gasket (good).

- Birmingham, AL, USA

While driving on a busy four lane I entered a turn lane to cross traffic. Immediately after I engaged the accelerator the vehicle lost all power and steering, with a alarm stating 'hybrid system warning-do not drive'. one vehicle narrowly missed hitting my car, (as it completely lost all power and steering and left me stuck in the middle of on coming traffic). Researching today I see this is common between 2012-2016 especially. This is a very dangerous situation that was narrowly avoided.

- Chatsworth, GA, USA

Intatke manifold runner performance the engine light show up on dashboard. The dweller charged me #163.14 just to block, and they want #563.00 to replaced the DC motor.

- Bayonne, NJ, USA

Driving car at 45 mph and car stalled without any warning.

- Lakeland, FL, USA

While driving down highway car began to smoke from tailpipe and began to lose acceleration while driving on highway. Vehicles check engine light illuminated. Took vehicle to nearest auto part retail store for diagnostic testing. Error code P0014 came up along with 2 other codes. Took vehicle to auto repair shop. Advised the exhaust solonoid had to be replaced along with spark plugs and gaskets due to burning from theta 2.0L turbo oil feed line. Car not drivable back to houston where I reside. We had to find additional time to stay at hotel and well as pay for transportation back home. My car is still in san antonio. Recall was repaired less than 6 months ago and car now has the same issue.

- Spring, TX, USA

The contact owns a 2015 Hyundai Sonata. The contact stated that while driving at 70 mph, the vehicle shook, hesitated, and stalled without warning. The vehicle was taken to universal Hyundai (12801 S orange blossom trail, orlando, fl 32837), where the contact was informed that the engine was previously replaced twice under warranty. The vehicle was not repaired a third time. The manufacturer was made aware of the failure and provided a case number. The failure mileage was approximately 80,000.

- Orlando, FL, USA

While driving on a major highway with a 55 mph speed limit, the check engine light came on and the car hesitated and was difficult to maintain the speed limit. I took the car to and auto parts store that has a code reader and saw the manifold runner control was indicating a fault. The code, P200A is described in a Hyundai technical service report for 2015 - 2016 Sonatas however after taking the car into new port richey Hyundai I was told that the service bulletin didn't apply to my vehicle. It is a danger to drive with the control unit failing and may at any time cause the car to decellarate.

- Land O Lakes, FL, USA