I voted for MB. I love all this 3 top german brands, but MB stands out as the first IMO. I love their engines although somehow I feel that MB is always a step backwards to Bmw with the exception at the high end engines amg vs m. At exterior design I have no doubt, I think MB designers are the best of the best. " No guts,no glory" seems to be their motto as they are adventorous,they have the courage to risk, to try to innovate, to create something really new,really revolutionary. They are not following those safety routes of the design. Maybe not all of their designs are perfect, or catchy, or beautiful but they separated very very well their cars. They gave each car his own personality, his own charm. Audi cars look very nice when compared to Bmw and to Mercedes, but they lack personality, they look boring. They look alike too much, they must differentiate their cars much on the next generations. At Bmw, some cars look really hot (F10 5er, 6er, F30 3er looks ok) but some of them are too damn horrible (F01 7er, F20 if I am right 1er). Exactly when you can say they are on a good path, exactly then BMW shows an ugly car. Speaking of innovations, I believe MB is number one when it comes to safety. Technically Bmw seems to be number one now, they innovate a lot of driving systems, but the MBs S class is the most innovative car in the world and will be a technologically tour de force in May. From the image point of view I put MB in the first place because it was the first car brand, it has tradition, 127 years of history, it is the most legendary car brand with many legendary cars such as 300 SL Gullwing, Merc 600, W123 E aka Cobra, W126 and every generation of the S clasz wich is the pinnacle of automotive industry. Bmw comes in second as a more classical rival for MB, and Audi on 3 because 20years ago nobody would choose Audi over an MB or Bmw. But I have to say that today you wouldn't do wrong by picking any of these 3 manufacturers. Audi is now on the same level with the other 2 producers, so all these 3 car producers are great now. Interior design seems a little bit dated too me at MB but their interiors look very very classic and elegant. Bmw uses too much the same interior on too much cars, I think the 5er,7er, X5,X6 almost look the same at interior. The 6er also look almost like those mentioned already but it kinda looks superior too them, seems more special. Same story with the 1er and 3er. Audi interiors look great, A8 is my personal favourite interior along with the Panamera. A6,A7 also look gorgeous at the interior. Their interiors are the most modern looking among these 3 brands. The look very fresh, very futuristic with these 3 interiors (A6,A7 and A8). So generally my top 3 is this : 1.MB 2.BMW 3.Audi PS: Sorry for my bad english.