Hyundai Getz Fire in the engine compartment

Hello, yesterday at 17:45h it popped up in the carport in front of my terraced house. A look from the kitchen window did not bring any enlightenment, so I opened the front door and could not believe it. Smoke came hissing bonnet and windshield up and under the car I could see a small fire – so no bonfire under the car, but flame light on the pavement. – While my wife called the FF, I grabbed the shclüssel and pushed the car away from the house, took the hose and extinguished first from below, then I opened the bonnet and specifically extinguished the burning part from above. When the FF arrived it was all over, but the guys also wanted to keep their fun and kept it in with my garden hose. At this point a thank to all volunteers!!!! What burned I can not say yet- the FF didn’t know the part either. Tomorrow a expert arrives, then I will report. The car was already 90 min., so at an outside temp. of 5°C it should be cooled off by now. F external consumers were not old.