Hello, I hope you can help me a little bit. For about a year now I have a Smart 450 of the first series. The previous owner has let the car get quite lost and almost not cared for at all. Now the TÜV is standing at my Smart and I have to ask a few small questions before, e.g. where do you get your spare parts? But it is much more important to me if one of you might know this problem. And I know that the exhaust is completely over and therefore it is very loud. However, the car squeaks when I give gas. I have also made a video that you can watch. At the beginning of the video I have given a few times gas there is not so extreme. In the back part of the video this is then again during the ride, then you hear the noises very clearly. I have now already changed the wedge belt (light machine & climate) maybe I just didn’t tense the belts enough?