general problems of the 2010 Hyundai Genesis

Vehicle suddenly loses acceleration and drops to a maximum speed of 20 mph. Check engine light turns on but goes away after shutting down the car and leaving it on standby for a few minutes. Occurs every few hundreds miles. It's happened while the car is in motion, both on the street and highway.

I feel like the transition on this car is a safety hazard. It locks you out of second gear at high rpms which could be dangerous in some situations. Also from 5th and 6th gear grind and are hard to actuate. A lot of people are having this problem.

I bought the car used with 32,500 miles. From day 1 there was a grind going into 5th gear. This was a known problem, but no TSB or recall was ever sent out about it. Just a TSB to change the fluid . At 82,000 miles the 5th gear synchro broke. I had to buy a used transmission from the junk yard and had it installed for $820 total including the transmission, labor and fluid. Why would they claim they have a 10 year/100,000 mile powertrain warranty, when it only covers the first owner. And why would they know about the 5th gear grind and not do anything about it.

The 2010 Hyundai Genesis coupe has been defective for a few months now. It will abrubtly shift from 3rd to 1st and from 5th to 3rd by itself. It will also not accelerate when you need it to. I was recently almost involved in accident because of the shifting issues. I have contacted Hyundai several times and they refuse to assist me. What are they waiting for, me to die in accident or something?? I want something done very soon or I will get legal counsel and they can speak with them.

While the car is warmed up and at operating temperature, the rpms will "hang" (hover around 2500 rpms) for 3-5 seconds before returning to idle.

Trying to shift into any gear during cold climates is very difficult and sometimes impossible on the first attempt. Multiple gears grind when going into gear specifically 5th and 6th gear, occasionally 3rd. I took it to a Hyundai dealership to get fixed and they said there was nothing wrong with it. This is a well known problem among the Genesis coupe community and Hyundai refuses to acknowledge they have a problem.

When starting the vehicle with foot on the clutch, it lurched forward hitting a parking barrier. Dealer denied mechanical causes. From the time I bought the car, it has accelerated on it's own, going to the max in rpms, at random times. I can take my foot off the gas and it will drive itself. When I try to come to a stop, it will accelerate and I have to counter by hitting the brake. When taken to the dealer, they couldn't "replicate" it. When I argued with the man, he said he would honor the warranty when they could replicate it, though the warranty is now expired. I asked for something in writing, he initialed the work order. Also, the front, under the bumper, is way too low and made of weak material, so when I have to go over any kind of dip, it drags, which has caused the piece to break. This also got up into the fender-well, which caused a hazard with my tires. I am stressed and scared of having a dangerous accident. I am considering trading the car in, but worry for the next owner. I no longer trust Hyundai. I feel like my safety is not a priority for the company. They do not search for the cause, just send me back out in a defective vehicle.

Transmission is difficult to shift at times mostly into second gear. This can cause a rapid deceleration in traffic and I have seen the vehicle behind me do a nose dive hitting the brakes because my vehicle disrupted traffic flow. Entering fast moving traffic is also a concern for this very reason. Dealer has replaced transmission several times with no change in transmission behavior.

This is a recurring hesitation problem. I first noticed this when making a turn into traffic. The hesitation is significant. In some cases there is an acceleration pause of 1-2 seconds. This does not occur every time I accelerate but its lack of predictability is a problem in and of itself. I have come close to being rear ended because the car would just not move when I pressed the accelerator. Also, when the car windows are up and the car sits in the sun for a few hours the central nav and communication system over heats and will not function until it cools off (maybe 20 minutes). In the meantime, back up camera does not work, temperature controls do not work and the bluetooth system does not function.

Genesis 4. 6 hesitates when attempting to accelerate from slow speed (creep). Hesitation may be up to 3-4 seconds making entering heavy traffic dangerous and unsafe. The problem is intermittent and therefore difficult for dealership to duplicate. Although there seems to be a number of complaints on the internet describing the problem, Hyundai refuses to acknowledge a manufacturing issues with certain transmissions.