I have owned my 2014 Audi S4 for about 6 months now.
Overall its a great car for daily driving, but has the ability to turn to super car on demand when you want a fun ride home!
I am getting 25MPG for blended driving.
Even with summer tires its gets around great on icy and snow covered roads.
Fit and finish are top notch.
I do not like how soft BMW cars have become - like American muscle cars of the past with lots of power but they just cannot handle (turn) well. I sold a 2013 128i M Sport after just 9 months. I drove the 2015 M235i and M3 sedans all day long at the BMW Car Control event. I am very unimpressed with the new M3. Poor seating position, turbo lag is prevalent, and it actually has too much torque to be fun. I have had VW and Audi in the past and they all were unreliable. Decided to look at the S4 on a whim - did not really even cross my mind, but maybe that's a good thing. It looks like a "regular" A4. The 6-speed manual shift action is smooth and the clutch actually has feel - BMW is too soft.
I am now on my third Audi and my current S4 is certainly the best. I test drove all models excluding A8 (can't afford it anyway) and S4 drives the best. Especially in its Sport mode - what a thrill! You can make it a normal commute car and join thousands of other generics on the highway during rush hours. But you can put in more aggressive mode and enjoy a proper sports car at a press of a button (well several buttons anyway). Brilliant design, excellent engineering and great execution.
Premium Plus quattro 4dr Sedan AWD (3.0L 6cyl S/C 7AM)
Was on the fence between the S4 and the 335i, and boy am I glad I got the Audi. I've had the car for 2 years, and this is a short summary of what I've learned. I'll go straight to the point and point out the bad first.
Transmission: can get clunky; when you pop it into Drive, its response is laggy
Handling: my previous Genesis coupe felt more confident-inspiring in the corners
MMI: I prefer the MB Command or the Porsche interface
That's pretty much all the cons that I can think of. The car accelerates as well as any 3.0L S'charged sport sedan will go. Brakes are fantastic with a consistent feel. The seats are not plush, but won't give you any issues. Drove from FL to NY and did not feel too bad. Build quality is top notch. My brother has the F30 328xi and the Audi feels more sturdy.