The X4 further sets itself apart from the X3 with a unique interior featuring very nice materials and high quality construction throughout. The ride height is lower than in the X3 and it offers drivers a more classically coupe-like view throughout the greenhouse. Handling has been improved over the X3 as well, with the X4 doing a passable impersonation of a sports car on winding roads, thanks to a lower ride height and more aggressively tuned suspension.
The X4 comes nicely equipped with both xDrive28i and M40i versions getting a nearly identical set of amenities. Standard equipment includes 18-inch wheels, 8-way power adjustable front seats, a walnut trimmed interior, a powered glass moonroof, a powered tailgate, rear parking sensors, rain sensing wipers, dynamic cruise control and a 9-speaker stereo with satellite radio. In the xDrive35i, a Harman/Kardon surround system is standard.
There are two optional packages available on both xDrive28i and M40i models, dubbed M Sport and xLine. Both packages significantly change the exterior of the X4, with the M Sport line deleting various chrome bits and adding more aggressive, body colored exterior enhancements. The M Sport line also includes unique 19-inch wheels and a few interior styling tweaks. The xLine takes the standard X4 in the opposite direction, adding rugged looking exterior enhancements as well as its own set of 19-inch wheels.
Safety is enhanced by a full complement of electronic aids as well as by several airbags. Other safety features include a hill start function as well as a mode for descending slippery slopes.