Steering Noise problems of the 2017 Audi Q7

When the steering wheel is turned there is a squeaky sound as if something is rubbing against some other thing. I took it to the dealership and they couldn't figure out the problem but did recognize the issue. They changed the whole suspension and the electrical steering system but the noise is still there. I took my car back from and was on a vacation when noticed large amount of smoke coming from below the vehicle. I parked the car on the side and checked for fire but there was none. I let the car cool down and then parked the car in the hotel. Later I drove back home and had a similar issue of smoke coming from below the car. I have dropped the car for the third time in the last 1. 5 months to the dealership. It appears that there is some kind of manufacturing fault in it or it's a lemon that they sold to me. The car was stationery when the smoke was noticed but I believe that the smoke must be there even in motion as well. The squeaky sound comes when the car is in motion at low speed specifically when turning.

The early production of model year 2017 Audi Q7 has significant steering noises, same as 2015 model year q5 (existing recall)'s steering noise. The loud clicking noise always come at low speed, for example, when you try to get into a parking spot. Another buzzing noise also occur during any turns. Audi dealer promised to replace steering shaft but it's been a year after that promise and we still cannot get the repair done. Audi kept telling us that the part is not available.