The BMW 4 Series Gran Coupe (G26) M440i, produced from 2022 through June 2024, represents a compelling blend of performance, luxury, and practicality within the 4 Series lineup. Positioned as a near-top-tier variant, the M440i Gran Coupe offered a significant step up in power and refinement compared to the 430i models, while remaining a more accessible alternative to the full-fledged M4 Gran Coupe. This model year marked a transition towards incorporating mild hybrid technology to enhance efficiency and responsiveness. The G26 chassis, part of the broader BMW cluster architecture, aimed to deliver a more engaging driving experience than its predecessor, the F36.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Gran Coupe (G26) |
| Type | M440i (374 Hp) Mild Hybrid Steptronic |
| Start of production | 2022 |
| End of production | June, 2024 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Coupe |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 7.6-8.2 l/100 km (30.9 – 28.7 US mpg) |
| CO2 emissions (WLTP) | 172-185 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5 sec |
| Acceleration 0 – 62 mph | 5 sec |
| Acceleration 0 – 60 mph | 4.8 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d |
| Weight-to-power ratio | 4.7 kg/Hp |
| Weight-to-torque ratio | 3.5 kg/Nm |
| Gross battery capacity | 0.4 kWh |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Electric motor power | 11 Hp |
| Electric motor Torque | 25 Nm (18.44 lb.-ft.) |
| Power | 374 Hp @ 5500-6500 rpm |
| Torque | 500 Nm @ 1900-5000 rpm (368.78 lb.-ft. @ 1900-5000 rpm) |
| Engine displacement | 2998 cm3 (182.95 cu. in.) |
| Number of cylinders | 6 |
| Engine Model/Code | B58B30B |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 94.6 mm (3.72 in.) |
| Compression ratio | 10.2:1 |
| Engine oil capacity | 7.2 l (7.61 US qt | 6.34 UK qt) |
| Kerb Weight | 1765 kg (3891.16 lbs.) |
| Max. weight | 2320 kg (5114.72 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) |
| Length | 4783 mm (188.31 in.) |
| Width | 1852 mm (72.91 in.) |
| Height | 1442 mm (56.77 in.) |
| Wheelbase | 2856 mm (112.44 in.) |
| Number of gears | 8 |
| Gearbox type | automatic transmission Steptronic |
Powertrain & Engine Architecture
At the heart of the M440i Gran Coupe lies the B58B30B 3.0-liter inline-six engine. This engine is a hallmark of modern BMW engineering, known for its smooth power delivery and responsiveness. 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 efficiency and maximize power output across the rev range. The mild hybrid system, incorporating a 48V lithium-ion battery and an 11 hp electric motor, provides a boost during acceleration and enables smoother start-stop operation. The electric motor is integrated into the drivetrain, assisting the engine and reducing load. The engine is paired with BMW’s eight-speed Steptronic automatic transmission, renowned for its quick and precise shifts. This transmission features adaptive shift programs that adjust to the driver’s style and road conditions.
Driving Characteristics
The M440i Gran Coupe delivers a refined yet engaging driving experience. The 374 hp and 368 lb-ft of torque provide ample power for confident acceleration and effortless highway cruising. The 0-60 mph sprint is achieved in approximately 4.8 seconds, making it a genuinely quick vehicle. The eight-speed automatic transmission is well-tuned, offering smooth gear changes and responsive downshifts. Compared to the 430i models, the M440i offers a noticeable increase in performance, particularly in mid-range acceleration. While not as overtly sporty as the M4 Gran Coupe, the M440i strikes a balance between performance and comfort, making it a suitable daily driver. The mild hybrid system contributes to a more seamless and refined driving experience, particularly in stop-and-go traffic.
Equipment & Trim Levels
The M440i Gran Coupe came standard with a comprehensive suite of features, including BMW’s iDrive infotainment system with a large touchscreen display, premium upholstery (typically Sensatec or Leatherette), automatic climate control, and a suite of advanced driver-assistance systems such as lane departure warning and forward collision warning. Optional extras included features like a premium Harman Kardon sound system, adaptive suspension, heated seats, a panoramic sunroof, and various cosmetic enhancements. The interior design emphasized a modern and luxurious aesthetic, with high-quality materials and a driver-focused layout.
Chassis & Braking
The G26 Gran Coupe features a sophisticated chassis design aimed at maximizing handling and ride comfort. The front suspension utilizes a spring strut setup with a transverse stabilizer, while the rear suspension employs an independent multi-link spring suspension, also with a stabilizer bar. This configuration provides a good balance between agility and stability. The M440i typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The steering system is an electric power steering setup, offering precise and responsive control.
Market Reception & Comparison
The M440i Gran Coupe was generally well-received by automotive critics, who praised its powerful engine, refined driving dynamics, and spacious interior. It was often compared favorably to its competitors, such as the Audi A5 Sportback and the Mercedes-Benz C-Class Coupe. Fuel economy was considered respectable for a vehicle of its performance class, with combined fuel consumption ranging from 7.6 to 8.2 l/100 km. Reliability reports have been generally positive, although some owners have reported minor issues with the infotainment system. Compared to the higher-performance M4 Gran Coupe, the M440i offered a more comfortable ride and a lower price point, making it a more practical choice for many buyers.
Legacy
The BMW M440i Gran Coupe (G26) represents a significant step forward in the evolution of the 4 Series lineup. Its combination of performance, luxury, and practicality has made it a popular choice among enthusiasts and discerning buyers. The B58 engine is widely regarded as one of the best inline-six engines ever produced by BMW, and its robust design suggests that it will remain reliable for many years to come. On the used car market, the M440i Gran Coupe holds its value well, reflecting its desirability and reputation for quality. The integration of mild hybrid technology foreshadowed BMW’s broader commitment to electrification, paving the way for future hybrid and electric models.
