Redesign and 2 questions before purchasing decision R8 4.2

Hello dear R8ler, I have been a “silent profiteur” and co-reader of this forum for some time, since my wife and I want to extend our fleet (BMW 5252d and Q7 3.0 TDI) to a used R8. So far I have been able to learn a lot from this forum and would like to thank all of you for this. Today we have borrowed a R8 candidate from the friendly who comes for us question. Is a 2009 R8 4.2 Coupe with 19T km on the clock. I noticed two things about the candidate, which I would like to have your opinion about, since I did not find by search function: 1. the vehicle is equipped with LED front lights, both of which are fogged from the inside (since this morning and even now after several hours in the garage). The fogging from the inside is on the side towards the front grille. The friendly said that this was normal. I added a picture, you can use the fitting as a white surface. 2. In the idle in N with running engine one hears at the rear of the vehicle clearly an irregular smearing or gluging at the level of the tailpipes. Sounds almost as if the fridge only shucks louder and it is irregular, almost as if there is any liquid not pumped properly. We would like to buy the car, but these two points still make me manage before the purchase decision. I hope I could lay everything necessary to you. I would be delighted to hear your views on both points above. Greetings, Klaus