Changes from 2003 to 2004
Performance package now available on coupes and convertibles, as well as with the automatic transmission and the premium package (on all 330s).
The climate control head unit has a new control button layout (temp, fan and recirc control buttons) for simpler operation and ease of use.
Sedan and wagon:
The rain sensor and automatic headlight control standard for all Sedans and Sports Wagons. These features were previously only available with the Premium Package (ZPP).
Automatic STEPTRONIC transmission will be available in conjunction with the Performance Package.
New Sport Package wheel for 325i Sedan and Sports Wagon. Styling 119 replaces Styling 96.
New base wheel for the 330i/330xi Sedan and 325xi Sedan/Sports Wagon when equipped with the Sport Package. New wheel replaces Styling 73.
Titanium exterior trim on the front grille and headlights will no longer be a differentiator for 330i and 330xi Sedans. (The headlights will be black and the front spoiler will be a combination of black and body color.)
Coupes and Convertibles:
Coupes and convertibles receive a major face lift with a new front grille (larger "BMW kidneys"), revised cleaner looking lower bumper design and front/rear light design including LED tail lights, repositioned side turn signal lights and clear front corners on sport package cars.
The Xenon headlight package was upgraded to the Adaptive Xenon package for coupes/convertibles only.
Adaptive Xenons not only auto-level as the standard Xenons do, but they also rotate side-to-side depending on orientation of the steering wheel. The goal is to point the light in the direction the car is traveling. A complex algorithm uses car speed, wheel angle, etc. to determine where to point the lights. Of interesting note is the fact that when the car is not moving, the lights will not turn to the driver's side (this is to avoid potential blinding of oncoming traffic, e.g. at a stop light). The headlight switch must be in the "A" (automatic) position -- turning the headlight switch to the "On" position will auto-level the headlights and turn them on, but they will be fixed straight ahead and not turn left and right.
325i and 325i Sports Wagon:
Styling 119 (17 x 8) with performance tires replaces Styling 96 when the sport package (ZSP) is ordered. This aligns the 325i with the 325Ci. Now all rear-wheel drive 325 models have the same Sport Package Wheel.
MY2004 330i/330xi Sedan Base wheel. 325xi and 325xi Sports Wagon Sport Package wheel.
Styling 137 (17 x 7) with all-season tires replaces Styling 73, also known as the Radial spoke.
Changes from 2004 to 2005
Performance package 330s get a perforated leather steering wheel instead of alcantara
The change was made about halfway through the 2005 model year and driven primarily by the inability of the alcantara wheel to hold up well over time. Prior to May 2005, Performance Package 330s shipped with alcantara, after that they shipped with a perforated leather wheel. Many originally-alcantara Performance Package 330s, however, will have had the alcantara wheel swapped out for leather under warranty due to excessive wear of the alcantara.
Lumbar seat support added to the premium package on the 325.
CD shuttle became MP3 compatible