Upon pressing the gas pedal from a complete stop, or while driving at very low speeds (less than 20 mph), vehicle hesitates to accelerate for 2 to 3 seconds. After the 2 or 3 second pause, car finally accelerates with very high RPM's.

- Farmingville, NY, USA

My truck is unpredictable. Sometimes there is a big delay when you press on the gas. Also, it excellerates when you least expect it for instance, turning into a parking space, all of a sudden it learches forward fast. It is extremely dangerous on the highway when cars are stopped behind you at a light. You never know when it does it. Sometimes on a cold start, sometimes not. I took it to the dealer and I was told it's because it has a double clutch. If that's the reason, why didn't it do it when I first got it. It started around 1900 miles. At first, I thought it was because of snow and slippery roads, not so. It's scary but what's even scarier, I will be paying for it for the next 5 years so I can't get rid of it unless I get killed in it. It only has 2400 miles on it. Truck was always in motion, sometimes even backing up in the morning it's in slow motion with a big hesitation.

- Freehold, NJ, USA

2mois et demi Aprè's L'achat le gps qui change de langage, il montre plus les Détailles, aucun signe de circulation ou autres et pourtant le deux premier mois tous fonction bien, pas de son dans la radio, je ne peux pas fermer les portes, J'ai du la fermé manuellement, L’arrière de la voiture qui S'ouvre toute seul, J'ai éTé pour faire des achats a mon retour J'ai trouvé L’arrière de la voiture ouverte (coffre) et pourtant J'ai bien Vérifié avant de rentrer dans le magasin puisque ce N'ai pas la première fois que le problème ce pose, J'ai informé le concessionnaire il me dit que C'est moi qui a appuyer sur le bouton par erreurs, je L'ai informé que ce que je me suis dites la 1er, 2eme et 3eme fois mais Là C'est plus que 10fois, hier C'est L'ouverture du toit qui ne veux pas S'ouvrir complètement, J'ai essayé aujourd’hui mais rien il S'ouvre a moitié, le gps il redeviens comme avant, chaque jour une nouvel chose que faire"??"

- Montreal, NY, USA

When accelerating from a stopped position, the vehicle would go into first gear and accelerate for a few seconds, then would try to move up to a higher gear and get suspended for about 5-7 seconds as if it could not find the next gear. This has happened 2-3 times so far. Also, when I have tested the response of accelerating by pressing the gas while traveling at a low speed, the vehicle would not respond as expected. On several occasions, I pushed the pedal to the floor and the engine only responded as if I was slightly accelerating. I have a 1.6 turbo. Additionally, I have had the lights on my dashboard go out - except for my radio/navigation system. I suspect this had to do with a sensor as it was dusk and my lights tripped some electrical or software defect. I was going down a major highway around Washington D.C. at the time and could not see any of the driving controls for approx 20 seconds. I am not sure if my headlights went out at that time but eventually, after flipping my lights off and on and pressing the dash light to maximum, the lights on the dashboard returned. Last week, the audio of my radio/navigation system would not work. After leaving my car and locking it for about 20 minutes and returning, the sound was working again. I took a video of this. The temperature in my vehicle was not regulating properly while stationary. The dealership said there was a bad sensor and replaced it. It has worked great since then. However, I am still having major problems accelerating from a stopped position from a red light or turning into a road, or accelerating from a very slow speed. My vehicle is now in a second dealership trying to resolve this issue that still lingers. This is causing me to feel very insecure about driving my vehicle. I am second owner. First owner had only put 2500 miles on it and traded it in. Probably a bad sign.

- Orlando, FL, USA

My 2017 Hyundai Tucson has been experiencing extremely dangerous acceleration issues that I would like to bring to the attention of the ntsb. The vehicle will experience lack of acceleration when merging onto highways and/or making turns that require acceleration. The vehicle has done this on several occasions where I was unable to control the vehicle with oncoming traffic. I have also been very close to being rear-ended and/or T-boned due to these acceleration issues. This is a very dangerous condition that is hazardous to not only the owner's of these vehicles, but also to other innocent drivers in their path. Apparently Hyundai and Kia vehicles are known to have this issue and have been mentioned in recent online forums. I reached out to Hyundai moments ago to address this issue with them and I am hoping they will respond to me with a fix and/or solution to this hazardous condition. My vehicle is going to the dealership again tomorrow 4/23/18 for this same issue. The last time I took the vehicle in for this issue I was told there was nothing wrong with the vehicle. It just happened again the other day and I was yet again put into a very "close call" situation. I have a young son and I do not feel safe in this vehicle with this condition occurring intermittently and unexpectedly on the roadway. How many people need to be hit due to this obviously known issue with these vehicles? my vehicle tends to do this more often when merging onto a highway where more acceleration is required; however, I have also experienced this problem when slowly accelerating from being stationary at traffic lights, stop signs, etc.

- Poughkeepsie, NY, USA

Any time from a stopped position or just accelerating while moving; I get lag or no acceleration at all. I have a Tucson turbo. My husband took this vehicle into be looked at in October and the dealership hooked it up to a computer and reset something to help regulate the acceleration. Learning the driving is what he was told it was doing. It helped for a few days maybe a week but then started back to having issues. My husband took it in last Friday & was told that this is how it's supposed to be. The guy in the service department wouldn't even look at it and told my husband that he has this conversation at least 2 or 3 times a week. He didn't look at it or record our concern. This is dangerous. I've almost been in an accident. I purchased this vehicle for safety and this is not safe!

- Kennesaw, GA, USA

I have owned the Tucson since 1/25/17.there is a lag/surge issue when excelerating. Not all the time, but seems to be happening more lately. In hindsight this situation had happened but I thought it was just getting use to the new vehicle. When I brought it in for service I mentioned it on a couple of occasions. I was told it was due to the dual clutch and the vehicle was "operating as intended". I find that hard to believe that when you are sitting at a stop light and step on the gas when the light changes it lags then surges into the intersection. Or, stopped in traffic and when it is time to move forward, lag and surge almost hitting the vehicle in front of me. As well as merging onto a highway and lagging as traffic is coming at you at 65 mph and you are lagging and hoping not to be hit. I find it hard to believe that Hyundai wants their vehicles to be running in this manner. I have been in touch with Hyundai customer connect and they send me back to the dealership. When I first got on to your site there wasn't as many reports as there are today. This is a very dangerous situation and I don't want to be a statistic. I have owned several Hyundai's over the years but never their SUV. I am keeping a record or every time this happens.

- Clinton, MA, USA

At various times during driving the car's engine will feel like there's no power or no gas and will go into a stall. This has happened both during accelerating from a stop going into traffic and during driving and accelerating. I have inquired at the dealership(fucillo Hyundai) and the service department suggested to use 93 octane, that was almost a year now and still happens sporadically. This is a very unsafe condition especially while pulling into traffic and the car goes into a "stall". researching blogs this is happening to other owners and is not isolated to me.

- Schenectady, NY, USA

Hyundais dual clutch system in my Tucson is very unsafe. I was not aware of issues until 2.5 months after obtaining the vehicle. From a dead atop at times it will not accelerate and only run up rpms. Other times in traffic it will also not accelerate and run up rpms. Doing a google search this was a huge issue in 2016 models but no recall was ever done for the 2017 models happens about 1 to 3 times per week. Could lead to serious injury accident.

- Mankato, MN, USA

At times when I stop and accelerate the car hesitates to move then it jumps and goes making it dangerous.

- Bronx, NY, USA

Car will no longer accelerate over 60mph and when the car is in drive it sometimes will not accelerate for a couple of seconds from a complete stop

- Highland, IN, USA

The vehicle at times when going from a stop will occasionally totally lose all propulsion for a split second which has caused me to almost be dead in traffic. It is very scary when it happens. I don't know if it is a engine or transmission or fuel problem. I had the problem with a 2014 Santa Fe. My brother in law has the same problem with the same vehicle.

- N Port, FL, USA

I have an acceleration problems, from the time I purchased the vehicle. You date below indicates only 1 time. So when the car is stopped and trying to pull out onto a highway or trying to make a turn across a lane of traffic, there is no acceleration, no gas, a hesitation I can punch the gas pedal to the floor before it actually will move then there's a lurch forward. This is a big concern, I can not have any traffic at all oncoming if I need to make a turn. This happens pulling onto the interstate, also from a stationary or almost stationary position. I can't have any traffic coming there's such a hesitation. I'm afraid this will result in a collision. This doesn't happen every time, I'd say a 50/50 chance of it happening. I haven't had an accident yet because of it. Very concerned, afraid to let anyone drive the car as I'm aware of the issue and am very cautious.

- Clarks Summit, PA, USA

Bought 2017 Hyundai Tucson on September 8th 2017 1st time in shop 10-4-2017 to 10-7-2017! we picked up car and drove maybe 5 miles to have accelerator (gas) not go when turning on a busy highway light came back on, car back in shop 10-7-2017 to 10-19-2017 reported it is fixed! drove morning of 10-20-2017 and light came back on! from 10-20-2017 to now and still ongoing eta 12-15-2017! this vehicle scares me! it has left me stranded miles away from home, and all of a sudden it just stops very scary someone will die with this ongoing problem! I do not want to drive in fear it will just decide to stall. I drove car off lot with 31 miles and has less then 2000 on it now! I still do not have my car back and honestly scared to drive it!

- Benbrook, TX, USA

Car will not accelerate when gas pedal is depressed standing at red light. Very dangerous. I was almost rear ended.

- Tucson, AZ, USA

Car will not accelerate from stopped position at stop lights when gas pedal is depressed.

- Tucson, AZ, USA

After stopping the vehicle does not respond to the gas pedal, severe lag. I have almost been in 3 accidents in 2 weeks, I am on blood thinners so this presents a life threatening issue for me, I am pursuing all complaint options and looking for a full refund. The car is only 2.5 weeks old and has less than 100 miles on it. The problem is intermittent so you can never be sure when it is going to happen.

- Lakeville, MA, USA

My vehicle is unpredictable when shifting or accelerating. I have had it loose all power when trying to accelerate when pulling into traffic. Also it seems to go into a neutral state sometimes or does not shift properly and runs the rpms high and shifts up and down before catching the right gear. I have already had and update at the dealership and was told that there would most likely be more and that it's like having a manual transmission that goes into neutral by itself and to just be aware this could happen. Not comforting to me. I have also had problem with any acceleration when in reverse being sluggish or not moving a couple of time.

- Bristow, VA, USA

We just purchased a 2017 Hyundai Tucson sport. The car has a serious issue of no acceleration after a stop, merging, passing on the highway and turning at an intersection. The car hesitates when you hit the accelerator, sometimes leaving you nearly stopped in a an intersection waiting for a car to hit you. If you choose to change lanes on a highway the car will hesitate when you press the accelerator to make the lane change. My wife has stopped driving the car due to the seriousness of no acceleration and safety concerns. We have taken the car back to the dealership and they said the diagnostics show that the car is fine and it is how the Hyundai transmission works in these vehicles. I think the car could be a "lemon." Not sure what to do.

- Willowbrook, IL, USA