2016 Hyundai Sonata fuel system problems

2016 Hyundai Sonata (not part of any recall) driven short distance on expressway had "check engine light" come on. Pulled off of expressway and checked under hood...No visible issues. Chose to return home via side streets as car was riding rough and having problems with acceleration at that point. Short while later, heard loud noise and saw smoke coming from under hood. Pulled to the side of the road and exited car. Was told by bystander that car was on fire.

While the vehicle is in motion and when I hit the brake. A click noise is always coming when we hit the brake till the end. Always happening observing from past 2 months. The other problem is when we hit the brake and and hold the shift knob it is making tick tick noise. Always happens when I showed to the mechanic they are saying it is normal because they have to do it for free of charge. Hyundai gives warranty but the dealers neglect to do.