4 and 6-cylinder engines updated
with 48V mild hybrid technology

(April 27, 2024) Already innovators in the premium midsize class in terms of aesthetic appeal, driving pleasure, electrification, and digitalization, the new BMW i4 and new BMW 4 Series Gran Coupe are building further on their unique status in the marketplace with updates in all these areas.

New exterior paint finishes and light-alloy wheels, new designs for the headlights, and rear lights available with laser-lit accents accentuate the bold visual impact of both models.


2025 BMW i4

Inside, the BMW Curved Display provides the stage for the latest evolution of BMW iDrive with QuickSelect, based on BMW Operating System 8.5. The display and control/operation system can be specified with an Augmented View display for the BMW Maps navigation system. And new steering wheel designs, interior trim elements, and upholsteries bring modern touches to the premium ambience of the interior.

The new BMW i4 and new BMW 4 Series Gran Coupe will be built at BMW’s home plant in Munich, whose transformation into a production facility geared exclusively to all-electric models is being fueled by substantial investment. The worldwide market launch of the new BMW i4 and new BMW 4 Series Gran Coupe will get underway in July 2024.


2025 BMW M440i Gran Coupe

Combustion engines with 48V mild hybrid technology

The new B58B30M2 3-liter inline 6-cylinder engines in the 2025 M440i Gran Coupe models feature a new 48V mild hybrid (MHEV) technology for sharper power deliver and greater efficiency. The auxiliary electric drive of the 48V starter generator can provide 11 hp of boost to the 375 hp TwinPower Turbo engine, resulting in  a total system output of 386 hp @ 5,200-6,250 rpm and 398 lb-ft of torque @ 1,900-4,800 rpm.

The engine is paired with an 8-speed Steptronic Sport transmission to propel the BMW M440i Gran Coupe from 0-60 mph in an estimated 4.7 seconds, or an estimated 4.3 seconds when fitted with xDrive intelligent all-wheel drive. The engine’s surge of power is accompanied by an exhilarating soundtrack from the M Sport exhaust system. Top speed is electronically limited to 155 mph.
 
The B48B20O2 2-liter inline 4-cylinder engine in the 2025 430i Gran Coupe models also benefits from 48V mild hybrid technology, as well as incorporation of the Miller cycle combustion process, a redesign of the intake ports and combustion chambers, and innovations in the areas of camshaft control, injection, ignition system, and exhaust gas routing. The TwinPower Turbo 4-cylinder engine produces 255 hp @ 4,700-6,500 rpm, and 295 lb-ft of torque @ 1,600-4,500 rpm.

Exterior updates

Slim headlights and a vertically arranged BMW kidney grille dropping deeply towards the road define the front-end styling of the BMW i4 and BMW 4 Series Gran Coupe. A refreshed design brings additional visual impact to these signature brand features. The surround of the BMW kidney grille is now finished in matt chrome, both as standard and in conjunction with the optional M Sport package.

Due to the lower cooling requirement of the electric drive system, the BMW kidney grille of the new BMW i4 has a fully enclosed upper section, below which is a Black high-gloss surface topped by a matte-silver honeycomb pattern. The air intakes on the combustion-engined versions of the new BMW 4 Series Gran Coupe have a mesh structure whose surfaces are now finished in matte Quartz Silver.

As well as a front apron with large side air intakes, the M Sport package for the BMW i4 and BMW 4 Series Gran Coupe also includes a diffuser element in the lower section of the rear bumper, now finished in Black high-gloss. The exhaust tailpipes integrated into the rear apron on the left and right of the combustion-engined models have grown from 3.5 inches to 4 inches in diameter. Like the BMW kidney grille surround, if the optional M high-gloss Shadowline with extended elements is specified, they are finished in Black high-gloss.

Adaptive Full LED Headlights are standard on i4 M50 xDrive and M440i models and optional on all other models as part of the Shadowline Package. Vehicles equipped as such are also fitted with new Laserlight taillights. This innovative lighting effect employs a technology first seen on the BMW M4 CSL, a high-performance special edition model. Here, laser diodes illuminate a fiber optic bundle, giving the rear units an intricate light graphic.

New interior accents enhance a progressive sporting appeal

The changes to the interior are focused on digitalization and achieving a sharper sporting profile. The upgraded BMW iDrive with QuickSelect further reduces in the number of buttons and controls in the cockpit. The functions of the automatic climate control system and seat and steering wheel heating can now be operated by touch via the BMW Curved Display or by voice command through the BMW Intelligent Personal Assistant. New adjustment controls for the air vents allow the airflow direction to be adjusted using rotating and tilting movements.

2025 BMW i4s and new BMW 4 Series Gran Coupes come standard with a two-spoke steering wheel with polygonal rim and illuminated multifunction buttons. Adding the M Sport Package now brings an M leather steering wheel in a three-spoke design with a flat-bottomed rim and a black center stripe marking the 12 o’clock position. The three-spoke M leather steering wheel standard on the i4 M50 xDrive and M440i models additionally features M tricolor stitching and a red stripe at top dead center.

Pricing will be anounced at a later date.