The BMW 4 Series Gran Coupe (G26 LCI), specifically the M440i xDrive Steptronic model, represents the facelifted iteration of the G26 generation, introduced for the 2025 model year. This variant occupies the performance-oriented mid-to-upper range of the 4 Series Gran Coupe lineup, blending sporty driving dynamics with the practicality of a five-door coupe. The “LCI” (Life Cycle Impulse) designation signifies a comprehensive mid-cycle refresh, incorporating styling updates, technological enhancements, and powertrain refinements. Production is slated to begin in September 2025.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Gran Coupe (G26 LCI, facelift 2024) |
| Type (Engine) | M440i (392 Hp) Mild Hybrid xDrive Steptronic |
| Start of production | September, 2025 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Coupe |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 7.8-8.3 l/100 km (30.2 – 28.3 US mpg, 36.2 – 34 UK mpg, 12.8 – 12 km/l) |
| CO2 emissions (WLTP) | 166-179 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.6 sec |
| Acceleration 0 – 62 mph | 4.6 sec |
| Acceleration 0 – 60 mph | 4.4 sec |
| Maximum speed | 250 km/h (155.34 mph), Electronically limited |
| Emission standard | Euro 6e |
| Weight-to-power ratio | 4.7 kg/Hp, 210.8 Hp/tonne |
| Weight-to-torque ratio | 3.4 kg/Nm, 290.3 Nm/tonne |
| Gross battery capacity | 0.4 kWh |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Battery location | Under the front hood |
| Electric motor power | 12 Hp |
| Electric motor Torque | 200 Nm (147.51 lb.-ft.) |
| Electric motor location | Front, Longitudinal |
| System power | 392 Hp |
| Power | 381 Hp @ 5200-6250 rpm |
| Power per litre | 127.1 Hp/l |
| Torque | 540 Nm @ 1900-4800 rpm (398.28 lb.-ft. @ 1900-4800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B58 |
| Engine displacement | 2998 cm3 (182.95 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 94.6 mm (3.72 in.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-scroll turbo, Intercooler |
| Valvetrain | VALVETRONIC, Double-VANOS |
| Engine systems | Start & Stop System, Particulate filter |
| Kerb Weight | 1860 kg (4100.6 lbs.) |
| Max. weight | 2415 kg (5324.16 lbs.) |
| Max load | 555 kg (1223.57 lbs.) |
| Trunk (boot) space – minimum | 470 l (16.6 cu. ft.) |
| Trunk (boot) space – maximum | 1290 l (45.56 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4783 mm (188.31 in.) |
| Width | 1852 mm (72.91 in.) |
| Width including mirrors | 2073 mm (81.61 in.) |
| Height | 1442 mm (56.77 in.) |
| Wheelbase | 2856 mm (112.44 in.) |
| Front track | 1595 mm (62.8 in.) |
| Rear (Back) track | 1623 mm (63.9 in.) |
| Front overhang | 862 mm (33.94 in.) |
| Rear overhang | 1065 mm (41.93 in.) |
| Ride height (ground clearance) | 140 mm (5.51 in.) |
| Minimum turning circle (turning diameter) | 12 m (39.37 ft.) |
| Drivetrain Architecture | ICE and electric motor drive all four wheels, operating in mixed mode. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| Front suspension | Spring Strut, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | Front: 245/45 R18, 245/40 R19, 245/35 R20; Rear: 245/45 R18, 255/40 R19, 255/35 R20 |
| Wheel rims size | Front: 8.5J x 18, 8.5J x 19, 8.5J x 20; Rear: 8.5J x 18, 9J x 19, 9J x 20 |
Powertrain & Engine Architecture
At the heart of the M440i xDrive Gran Coupe lies the BMW B58 3.0-liter inline-six engine. This engine is a cornerstone of BMW’s modern powertrain strategy, known for its smooth power delivery and efficiency. The B58 utilizes direct fuel injection, a twin-scroll turbocharger, and BMW’s VALVETRONIC variable valve timing and Double-VANOS variable camshaft timing systems. These technologies work in concert to optimize combustion, boost torque across a broad rev range, and enhance fuel economy. The “mild hybrid” component consists of a 48V electrical system and a 12 hp electric motor integrated into the drivetrain. This system provides a power boost during acceleration, enables smoother start-stop operation, and allows for regenerative braking to recoup energy. The engine is paired with BMW’s eight-speed Steptronic automatic transmission, renowned for its quick and precise shifts. The transmission is specifically tuned to complement the engine’s characteristics, offering both responsive performance and comfortable cruising.
Driving Characteristics
The M440i xDrive Gran Coupe delivers a compelling driving experience. The 392 hp and 540 Nm (398 lb-ft) of torque provide brisk acceleration, with a 0-60 mph time of around 4.4 seconds. The mild hybrid system contributes to a near-instantaneous response from a standstill. The eight-speed Steptronic transmission is well-matched to the engine, providing seamless gear changes in both automatic and manual modes. The xDrive all-wheel-drive system ensures excellent traction in various conditions, enhancing stability and confidence. Compared to lower-powered 4 Series Gran Coupe variants, such as the 430i, the M440i offers a significantly more engaging and dynamic driving experience. While not as track-focused as the M4, it provides a satisfying balance of performance and everyday usability.
Equipment & Trim Levels
The M440i xDrive Gran Coupe comes standard with a comprehensive array of features. Interior appointments typically include premium leather upholstery, power-adjustable sport seats, and a sophisticated infotainment system with a large touchscreen display. Standard safety features include automatic emergency braking, lane departure warning, and adaptive cruise control. Optional extras often include a premium sound system, a head-up display, ventilated seats, and a panoramic sunroof. The M Sport package adds unique exterior styling elements, sport suspension, and upgraded brakes.
Chassis & Braking
The G26 Gran Coupe utilizes a sophisticated chassis design. The front suspension employs spring struts with a transverse stabilizer, while the rear features an independent multi-link setup, also with a stabilizer bar. This configuration provides a good balance of ride comfort and handling precision. The M440i typically features larger brakes than lower-trim models, with ventilated discs at all four corners. The xDrive all-wheel-drive system distributes power between the front and rear axles as needed, optimizing traction and stability.
Market Reception & Comparison
The M440i xDrive Gran Coupe has been generally well-received by automotive critics. It’s praised for its potent engine, refined handling, and luxurious interior. Fuel economy is respectable for a performance-oriented vehicle, with combined WLTP figures ranging from 7.8 to 8.3 l/100 km (30.2 – 28.3 US mpg). Compared to the 430i Gran Coupe, the M440i offers a substantial performance upgrade, but at a higher price point. The M440i provides a compelling alternative to rivals such as the Audi S5 Sportback and the Mercedes-AMG C 43 Coupe.
Legacy
The B58 engine has proven to be a robust and reliable powerplant, and the eight-speed Steptronic transmission is also known for its durability. The M440i xDrive Gran Coupe is expected to hold its value well in the used car market, appealing to buyers seeking a blend of performance, luxury, and practicality. As with any modern vehicle, regular maintenance is crucial to ensure long-term reliability. The mild hybrid system, while adding complexity, is generally considered to be a reliable component. The G26 LCI represents a refined and capable iteration of the 4 Series Gran Coupe, solidifying its position as a desirable choice in the premium compact executive car segment.
