On 3 separate occassons the vehicle was on a major street when it just died.the first time was comng out of a stop at a red light, the second just when I was driving and the third time whle I was deaccelarating. Miraculalously I was able to use the last bit of momentum and pull over. The car started up again each tme. The dealer had no suggestions the first 2 times except for possble computer misfire.they released the car staitng it should be fine and they could not replcate the event.after starting a case with Hyundai they decided to replace the ignition coils and then the fuel pump. After much questioningand little cooperaion from Hyundai or the dealer, I was told that 1500 people reprted the same life threatenening event onn thier car. Not enough for a recall!!!someone is going to get killed. Neither the dealer or Hyundai thinks this is an issue.case number 8479377.I have never received a call from the case engineer from Hyundai explaining any repairs as promised. Hyundai is unresponsive. The service manager is mike dsantis md isalnd Hyundai centeeach NY631 580 0800

- Kings Park, NY, USA

I am writing in regards to my new 2015 Hyundai Sonata eco that I purchased in May 2015 from mccarthy Hyundai automotive in olathe, Kansas. Shortly after bringing it home, I noticed that each time the car was started on a cold start, it would hesitate and pause upon acceleration when I would take off. After the car warmed up, it was much better but still would pause and hesitate sometimes when I was needing to accelerate quickly. I took the car 4 separate times to mccarthy Hyundai service dept. In olathe. Each time, they would only say that the car is 'operating as designed' and that this is one of the characteristics of the new eco's since they have the dual clutch transmission. We drove 4 other eco's and experienced the same problem. However, they did admit that it seemed abnormal and possibly a patch/update will come out in the future to correct the problem. Unfortunately, this could take many years or not at all. There is no way of knowing. One of the times that the car was at their service center, they did find a faulty fuel pump and replaced it. This alone did not take care of the issue that I am experiencing with the car. My main concern at this point is the safety issue. I do not know when the car will or won't hesitate and pause upon acceleration. I live in a metropolitan area and drive in a lot of traffic. There are many times that I need to be able to merge into traffic and many other reasons when I must depend on my car accelerating like a normal car does. It does not. If there is any way that you can help or look into this issue with the 2015 Hyundai Sonata eco's, I would greatly appreciate it. It could save lives.

- Olathe, KS, USA

I bought this new car a few months ago. At 1089 miles engine overheated while in traffic. I manage to stop safely and I called roadside to tow the car to service. Second day they told me that they need to replace the engine according to Hyundai tech line. This for me was a red flag that something is really wrong with that car. They found coolant inside the engine and this was their diagnosis, jsut like this. The replaced the engine with a remanufactured one and few weeks later I ended up in service again for coolant leaks. They replaced 2 big houses. Not long after this I ended up again in service cause coolant level is low on the overfill compartment. They said is nothing wrong and all the tests are good. So I took the car and a couple of weeks later the same. They told me the same story. Well the car overheated again and again and again till everything started to smell like something melted and some kind of smoke came out from inside the engine when you open the oil cap. The car has been in service for more than 3 weeks with no resolution so far. I reported coolant issues from the beginning but Hyundai refuse to listed and kept saying is nothing wrong. I consider this S huge issues and can cause the car to get on fire or engine to explode. I hope to get this done under lemon law but Hyundai is stubborn and we might end up in court. In the mean time I am paying for the 7 months for a defective problem not to mention the value after all these major issues.

- San Antonio, TX, USA