When I applied break my RPM idle goes up. I don't know if that is safe I show in other car RPM goes down. I took to dealer got oil change. And I asked why this happens. He told me to chack eco system. I chack eco system it was on off postion. I ask him when I bought car I never show RPM go up when I hate break. There no engine sing comesup on dashboard either. This really safety concern for my family. RPM should not go up when U hate breaks. It's should bring RPM down. RPM should go up when U hate gas padel. I get this. But when I go to any speed. And tried to applied break it should drop RPM should not go up.

- Tinleypark, IL, USA

My wife was parking car pulling into space at aprox. 5mph, she applied brakes and pedal went too the floor without stopping, the continued to travel over cement stopper onto main thorough fair, she was able to stop by throwing car into park. She restarted car and brakes were ok..we brought car to dealer, they kept car for one week and could not find nothing wrong I showed them 5 other complaints with the same problem they said nothing could be done if car not repeat problem. We traded car for fear that this would happen again possibly killing ourselves or some innocent bystander.this is a very very dangerous matter and should be investigated further.

- Spging Hill, FL, USA

When I was braking, the passenger front brakes made a horrible metal on metal sound. I had a mechanic look at the brakes (to far from a Hyundai dealer). The mechanic could not find any problems. This. Has gone on for months. I had the brake pads replaced even though the original pads were still good. I finally took my car to the Hyundai dealer who explained to me (the rotors were extremely rusted and needed to be replaced) what, this sounds like a manufacturing issue. No, I had all rotors replaced and new brake pads all the way around. Guess what, still making the sound in the front passenger side.

- Martinsburg, WV, USA

While driving at a low speed, approximately 30 mph and slowing to a traffic light, the entire electrical system on my 2012 Hyundai Sonata gls failed. I lost the power steering, braking and gas. All of the warning lights lit up on the console. Luckily I was able to allow the car to come to a stop on its own - if I had been traveling at a higher rate of speed, or if someone had been crossing the road, the result could have been much, much worse. Once the car stopped, I put it in park and the lights stayed on. I turned the key to the off position and then back on and it turned right back on as if nothing happened. The car was then towed to the dealer and was in service for 5 days, and they claim to be unable to replicate the failure. Since they are unable to replicate, and lemon law state that an issue must occur 3 times, I have no course of action to take besides buying a new car and taking on added expense, or driving this car, which may or may not be safe from defect and hope it doesn't happen again. I will file a complaint with Hyundai as well.

- Levittown, PA, USA

There are actually 2 issues going on. First off, I purchased the car new in September 2011 (to replace a GM lemon) and ever since I've had the vehicle, it has pulled to the right. Second issue, I left work pulling onto the road, drove a couple of blocks when traffic had stopped at the upcoming light; therefore I had not completely built up speed to the speed limit (40) when I had to stop. I applied the brakes and did not completely stop before hitting the Toyota 4runner in front of me, I felt like I was driving on ice. When I hit the brakes, the car started to stop but the brakes kept going further down to the floor, with no feeling of stopping. The dealership that repaired the vehicle through the insurance company( GM) said they did not find anything wrong with the brakes so I took it took it to my local Hyundai dealer, who did find that my brake lines had air in them. I don't know how since I had never had them worked on and it's a sealed system. After the technician called Hyundai, they assigned a case number. While my car was being repaired, I mentioned that the car pulled to the right so they did an alignment on it, since it was a front end crash. They did notice the pulling but the alignment did not help and thought I may have a bad tire, but with 21,000 miles, would not replace it. I get my tires rotated faithfully and have already been told they are wearing out. This is the first foreign car I've owned and (as prev. Noted) got it to replace a GM lemon, now I don't feel safe driving this car and I have to use it to travel across the state. Between the steering and the brakes, I don't know what to do. Did I get another lemon? since I can't seem to get any satisfaction, I'm contacting you, I'm tired of calling the Hyundai dealer since they say can't do anything. I don't want to get satisfaction, only after my family is writing my obituary. [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Lake Worth, FL, USA

The contact owns a 2012 Hyundai Sonata. The contact stated that while driving 40 mph, a loud, abnormal bang was heard from the front passenger side of the vehicle. The vehicle then lost braking and steering abilities as the contact crashed into the rear of another vehicle. The air bags failed to deploy and the contact was injured. The vehicle was destroyed. The contact stated that the loud bang was a result of either a tire blowing or a defective strut that caused the tire blow. The contact called the manufacturer regarding the crash. The manufacturer advised that they would investigate the crash. The failure mileage was 20,000.

- Toluca, IL, USA