The E92 is a wonderful looking car and is almost entirely responsible for my aspirations to own a BMW. I have always thought its shape was near perfect and I can't imagine ever tiring of it.
Still, I prefer the lines of the F32, particularly the rear third. The way in which the rear window extends further along the roofline gives the car a more streamlined and aerodynamic look.
And whilst I prefer both BMW's over the Audi, the A5 has its own qualities and these pics don't really do it justice.
Nice comparison though
