Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Gran Coupe (G26) |
| Type | M440i (382 Hp) Mild Hybrid xDrive Steptronic |
| Start of production | 2021 |
| End of production | June, 2024 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Coupe |
| Seats | 5 |
| Doors | 5 |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 60 mph | 4.4 sec |
| Maximum speed | 210 km/h (130.49 mph) |
| Weight-to-power ratio | 5 kg/Hp, 202 Hp/tonne |
| Weight-to-torque ratio | 3.8 kg/Nm, 264.4 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 | 11 Hp |
| Electric motor Torque | 25 Nm (18.44 lb.-ft.) |
| Electric motor location | Front, Longitudinal |
| Power | 382 Hp @ 5800-6500 rpm |
| Torque | 500 Nm @ 1800-5000 rpm (368.78 lb.-ft. @ 1800-5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B58B30O1 |
| 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.) |
| Compression ratio | 10.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Valvetrain | Double-VANOS, VALVETRONIC |
| Engine oil capacity | 7.2 l (7.61 US qt | 6.34 UK qt) |
| Kerb Weight | 1891 kg (4168.94 lbs.) |
| Max. weight | 2380 kg (5247 lbs.) |
| Max load | 489 kg (1078.06 lbs.) |
| Trunk (boot) space – minimum | 470 l (16.6 cu. ft.) |
| Trunk (boot) space – maximum | 1291 l (45.59 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 UK gal) |
| Length | 4787 mm (188.46 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 | 1582 mm (62.28 in.) |
| Rear (Back) track | 1610 mm (63.39 in.) |
| Ride height (ground clearance) | 140 mm (5.51 in.) |
| Drag coefficient (Cd) | 0.30 |
| Minimum turning circle (turning diameter) | 12 m (39.37 ft.) |
| Drivetrain Architecture | ICE and electric motor permanently drive all four wheels |
| 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 |
| Front wheel tires | 225/45 R18; 245/45 R18; 245/40 R19; 245/35 R20 |
| Rear wheel tires | 225/45 R18; 245/45 R18; 255/40 R19; 255/35 R20 |
| Front wheel rims | 7.5J x 18; 8.5J x 18; 8.5J x 19; 8.5J x 20 |
| Rear wheel rims | 7.5J x 18; 8.5J x 18; 9J x 19; 9J x 20 |
The BMW M440i Gran Coupe, launched in 2021, is a five-door coupe that blends the sporty aesthetics of the 4 Series with the practicality of a sedan. It slots into the 4 Series Gran Coupe range as a performance-oriented model, offering a significant upgrade over the base 430i variants. The G26 generation, built on the CLAR platform, prioritizes a lower center of gravity and increased rigidity for improved handling. The M440i’s mild-hybrid system further enhances efficiency and responsiveness, making it a popular choice for drivers seeking a dynamic and refined driving experience.
Powertrain & Engine Architecture
At the heart of the M440i Gran Coupe lies the BMW B58B30O1 3.0-liter inline-six engine. This engine is a masterpiece of modern engineering, featuring a single twin-scroll turbocharger, direct fuel injection, and BMW’s renowned Double-VANOS and VALVETRONIC technologies. Double-VANOS manages valve timing on both the intake and exhaust sides, while VALVETRONIC precisely controls valve lift, optimizing engine efficiency and power delivery. The engine produces 382 horsepower at 5800-6500 rpm and 368.78 lb-ft of torque between 1800-5000 rpm.
The “M440i” designation also indicates the inclusion of a 48V mild-hybrid system. This system utilizes a 48-volt starter-generator integrated into the drivetrain. The electric motor adds a modest 11 horsepower and 18.44 lb-ft of torque, primarily assisting during acceleration and allowing for smoother start-stop operation. The system also enables coasting with the engine switched off, further improving fuel economy. Power is transmitted to all four wheels via BMW’s xDrive all-wheel-drive system and an eight-speed Steptronic automatic transmission. The Steptronic transmission offers both automatic and manual shift modes, providing drivers with greater control over gear selection.
Driving Characteristics
The M440i Gran Coupe delivers a refined yet engaging driving experience. The combination of the potent inline-six engine, the mild-hybrid system, and the xDrive all-wheel-drive system results in brisk acceleration – 0 to 60 mph in just 4.4 seconds. The eight-speed Steptronic transmission shifts smoothly and responsively, contributing to the car’s overall refinement. The xDrive system provides excellent traction in all weather conditions, enhancing stability and confidence. Compared to the 430i Gran Coupe, the M440i offers a noticeably more powerful and responsive driving experience. While the 430i prioritizes fuel efficiency, the M440i focuses on performance without sacrificing everyday usability. The steering is precise and well-weighted, providing good feedback to the driver. The suspension is tuned for a balance between comfort and handling, offering a composed ride even on uneven surfaces.
Equipment & Trim Levels
The M440i Gran Coupe came generously equipped as standard. Typical features included BMW’s iDrive infotainment system with a large touchscreen display, navigation, Apple CarPlay and Android Auto compatibility, a premium sound system, leather upholstery, power-adjustable front seats with memory function, and a panoramic sunroof. Available options included upgraded leather upholstery, a head-up display, adaptive cruise control, a parking assistant system, and a variety of exterior styling enhancements. The interior design is modern and luxurious, with high-quality materials and a driver-focused layout.
Chassis & Braking
The G26 4 Series Gran Coupe features a sophisticated chassis design. 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. This configuration provides a good balance between ride comfort and handling precision. The M440i is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The ABS (Anti-lock Braking System) and electronic stability control systems further enhance safety and control. The car’s weight distribution is optimized for neutral handling, contributing to its dynamic capabilities.
Market Reception & Comparison
The BMW M440i Gran Coupe was generally well-received by automotive critics. Reviewers praised its powerful engine, refined driving dynamics, and luxurious interior. The mild-hybrid system was also noted for its contribution to improved fuel economy and responsiveness. Compared to other performance-oriented four-door coupes, such as the Audi S5 Sportback and the Mercedes-AMG C 43 Coupe, the M440i Gran Coupe offered a compelling combination of performance, luxury, and technology. Fuel economy was respectable for a performance car, averaging around 25 mpg combined. Reliability reports have been generally positive, with few major issues reported.
Legacy
The B58 engine powering the M440i Gran Coupe has proven to be a robust and reliable powerplant. The mild-hybrid system, while relatively new at the time of its introduction, has also demonstrated good long-term durability. On the used car market, the M440i Gran Coupe holds its value well, reflecting its desirable combination of performance, luxury, and practicality. These models continue to be sought after by enthusiasts looking for a sporty and refined driving experience in a versatile package. Regular maintenance, including oil changes and adherence to BMW’s recommended service intervals, is crucial for ensuring the long-term reliability of this powertrain.
