Equipment
All models feature the iDrive 8 infotainment system, including an updated voice-controlled assistant and gesture control system, while the iDrive controller is also retained on the centre console.[30] The interface is sourced through the BMW Curved Display that combines the 12.3 in instrument cluster and 14.9 in infotainment system with a redesigned touch interface within a single unit.[30] The iDrive 8 system features Apple CarPlay and Android Auto capability, compatible with 5G mobile technology, while third-party applications for communication and music streaming are also integrated within the system.[31] The over-the-air functionality is increased and incorporate updates to driving functions, such as driving assistance and semi-autonomous features.[30] A number of ambient lighting elements are placed throughout the cabin and change color depending on the driving mode.[32] The iDrive 8 system is integrated with the new My BMW App for smartphones.[33]
Standard equipment includes a sports steering wheel with multifunction buttons and sports seats, three-zone climate control, acoustic glazing for the windshield, pre-heating and pre-conditioning, and an electrically-operated tailgate. Optional equipment includes seat heating and ventilation, M Sport Package Pro, ambient lighting and a glass slide/tilt sunroof. An M Carbon exterior package and M Performance Parts can also be ordered as an option.[34] The i4 offer a 10-speaker audio system with a 205-watt amplifier as standard, while a Harman Kardon system with 16 speakers with a digital seven-channel amplifier is an optional equipment.[22] Full LED headlights and tail lights are standard, though the former can be upgraded to adaptive units with BMW Laserlight and BMW Selective Beam function.[25] It is available in wheel sizes from 17 inch to 20 inch with wider rear tires as standard.[17]
The i4 comes with an acoustic pedestrian protection system, which is an artificially generated sound (including optional false engine sounds)[28] produced by the exterior speakers that is active when driving up to 21 kph in Europe or 31 kph in the US. Furthermore, it has up to 40 driver assistance systems, enabling Level 2 semi autonomous driving.[17] Standard driver assistance systems including lane departure warning, intelligent speed adaptation, collision warning with braking intervention, front and rear parking sensors, and a backup camera.[34] A Driving Assistance Professional package is optional, which adds adaptive cruise control with stop and go, lane-keep assist with side collision avoidance, and rear automatic emergency braking. The optional parking assistant system displays a three-dimensional 360-degree view of the car and its surroundings.[34] The maximum towing capacity is 1600 kg, with an additional 75 kg roof load possible.[29]
M Performance parts can be fitted 35-40 models in the M Sport Trim and all M50 models. These include carbon fibre mirrors, spoiler, kidney grille trim, splitter, diffuser, rear bumper trim, front vents and gear lever, M wheels, interior alcantara, a sport steering wheel and sport seats.