Bought 09 QS with 19k miles on it (my 2nd first got totaled after 6mo). First repair was transmission seals leaking around 30k (now have 38k) I attributed it to it not being driven as I am the 3rd owner and it probably sat for a while and the seals dried out as the 2nd owner never drove it. However my mechanic said it's fairly common. Today the lower pully seized up and the belt caught fire from the friction. Hopefully it didn't push any metallic parts into the system. It cost me $2,100 for the transmission and will probably run 2k+ for the for the latest issue. While I expected the quirkiness and the periodic problems (had some electrical issues as well). As much as I love this car, especially the engine, I am hoping this is not going to continue or I am going to have to sell it.