BMW uses their standard "xLine" and "M Performance" trim designations for the xDrive30i and M40i respectively, meaning that in addition to having different engines, the two base models look somewhat distinct as well. The xDrive30i gets unique 19-inch wheels, a power liftgate, power sunroof, heated power folding exterior mirrors, and LED headlights.
Inside, the two trims are further differentiated by their interior styling and features. The xDrive30i comes with dark oakwood interior accent strips, chrome instrument bezels and high-gloss black highlights. In contrast, the M40i comes with aluminum accent strips, a sportier steering wheel and grippier seats.
The X4 M is engineered with special attention to chassis stiffness, bigger brakes, and adaptive suspension dampeners with custom Sport, Comfort, and Race settings that tailor your experience to your preference. Unique quick ratio power steering tuning aided by heavy duty limited slip differentials and standard X-drive ensure the X4 remains planted wherever it goes.
The BMW X4 infotainment system comes with a 12-speaker sound system, Apple CarPlay/Android Auto compatible, two 12v power outlets, 2 USB ports, real-time traffic/weather display and Bluetooth integration. The X4 also comes standard with a navigation system, which is displayed on a large 12.3-inch screen in the X4's center console.
Driver assistance options on the BMW X4 are numerous and include an active cruise control system that extends to stop-and-go traffic, meaning the car will essentially take care of the gas and brakes even down to bumper-to-bumper traffic.
Standard safety features for the X4 include Frontal Collision Warning, Park Distance Control, a blind spot detection system, a lane departure warning system, rear collision warning, a speed limit information system, pedestrian detection prevention, antilock brakes, a comprehensive set of airbags, stability control, brake assist, hill hold control and post-collision braking.