Does your 335is have an inline 6 twin turbo engine with 425hp and 406 lb-ft of torque?
N54TT with 330hp and 370 lb-ft torque
Does your 335is have LED head lights?
Yes
Does your 335is have brake discs that is as large as the new M cars with sa many pistons?
13.7 vs 14.5
Does your 335is have tires as wide and 19" wheels that is as light?
Yes
Does your 335is have the same stiffness as the new M cars?
No
Does your 335is have a carbon drive shaft?
No
Does your 335is' DCT have 7 gears?
Yes
Does your 335is have a electronically controlled diff that comes standard?
No
Does your 335is have the same merino leather?
Yes
Does your 335is have M-HUD?
No
Does your 335is have the same large LCD screen?
Yes
Does your 335is have navigation system that is standard?
Yes
Does your 335is have 2 M buttons on the steering wheel?
No
Does your 335is' M-DCT have launch control? Oh, wait, you don't have M-DCT.
Yes 
Does your 335is have a spare tire? Oh yes you do.
No - RFT
Does your 335is have a lithium ion battery?
Yes In the trunk?
No
Does your 335is have leather on the dashboard and the glovebox and on the doors?
No
Does your 335is have a carbon fiber reinforced roof?
No
Does your 335is have go from 0-60 in 3.9 seconds?
4.6
Does your 335is have non-flappy cup holders?
Huh?
Does your 335is have speed limit info?
No
Does your 335is have surround view cameras?
No
Does your 335is have the real suspension mounted directly to the car's frame without bushings?
No
Does your 335is have M Adaptive Suspension?
No
Does your 335is open up the exhaust flaps when it is set to sport and sport+ throttle response settings?
No
Does your 335is have shift LED indicators?
Yes
Does your 335is have carbon fiber brace under the hood?
Yes
Does your 335is have aluminum quarter panels?
Yes
Does your 335is have suspension parts?
Yes