I was driving on the freeway at 65mph and experienced a sudden loss of power. I depressed the gas pedal but the car would not accelerate past 45 mph. I had to drive all the way home with my hazard lights on. There were no lights on the dashboard to signify a problem. This happened several times. I took it into the Hyundai Service center and they could not replicate the problem. It happened again. and again. and again. finally got an error ‘possible condition with your engine control module’. Took it into the dealer and after they drove it around for hundreds of miles they said they were able to recreate the problem, pulls some codes and relaced the fuel injection pump. It happened again. and again. and again. I took it back to the Hyundai Service center. They could not re-create the issue. They told me to use Chevron gas only and added an additive to the car. It worked for a while. Then it happened again. And again. I took it to a different Hyundai Service Center. They were not able to re-create the problem. Apparently, every time I drive the car, after 5-10 minutes on the street roads, the car fails to accelerate and I have to pull over, stop the car, and then re-start it. Re-starting it seems to clear the issue. I am driving in SMART mode and my car is at 39000 miles. Every time I take it to the service center, they can not re-create the issue. This is outrageous. Do I need to get into a car accident in order to bring legal action to Hyundai for not fixing this loss of power/failure to accelerate issue? Worst part is, the first Hyundai service center went out of business and I can not get any of the maintenance records for the fuel pump replacement.