The BMW 4 Series Coupe (G22 LCI), specifically the 430d variant introduced with the 2024 facelift, represents a blend of performance, efficiency, and modern technology within BMW’s compact executive coupe range. Production commenced in March 2024, positioning this model as a mid-range offering within the G22 lineup, slotting between the entry-level 420i and the higher-performance M440i. The 430d utilizes a mild hybrid diesel powertrain coupled with BMW’s xDrive all-wheel-drive system and an 8-speed Steptronic automatic transmission, aiming to deliver a refined driving experience with reduced emissions.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Coupe (G22 LCI, facelift 2024) |
| Type (Engine) | 430d (286 Hp) Mild Hybrid xDrive Steptronic |
| Start of production | March, 2024 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Combined fuel consumption (WLTP) | 5.5-6.2 l/100 km (42.8 – 37.9 US mpg, 51.4 – 45.6 UK mpg, 18.2 – 16.1 km/l) |
| CO2 emissions (WLTP) | 145-162 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.1 sec |
| Acceleration 0 – 62 mph | 5.1 sec |
| Acceleration 0 – 60 mph | 4.8 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6e |
| Weight-to-power ratio | 6.2 kg/Hp, 161.6 Hp/tonne |
| Weight-to-torque ratio | 2.7 kg/Nm, 367.2 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 | 286 Hp @ 4000 rpm |
| Torque | 650 Nm @ 1500-2500 rpm (479.42 lb.-ft. @ 1500-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B57 |
| Engine displacement | 2993 cm3 (182.64 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 90 mm (3.54 in.) |
| Compression ratio | 16.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Twin-power turbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 7 l (7.4 US qt | 6.16 UK qt) |
| Kerb Weight | 1770 kg (3902.18 lbs.) |
| Max. weight | 2255 kg (4971.42 lbs.) |
| Max load | 485 kg (1069.24 lbs.) |
| Trunk (boot) space – minimum | 440 l (15.54 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 | 4768 mm (187.72 in.) |
| Width | 1852 mm (72.91 in.) |
| Width including mirrors | 2081 mm (81.93 in.) |
| Height | 1390 mm (54.72 in.) |
| Wheelbase | 2851 mm (112.24 in.) |
| Front track | 1573 mm (61.93 in.) |
| Rear (Back) track | 1612 mm (63.46 in.) |
| Front overhang | 858 mm (33.78 in.) |
| Rear overhang | 1059 mm (41.69 in.) |
| Ride height (ground clearance) | 126 mm (4.96 in.) |
| Drag coefficient (Cd) | 0.25 |
| 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 | 225/50 R17 |
| Wheel rims size | 7.5J x 17 |
Powertrain & Engine Architecture
At the heart of the 430d LCI lies the BMW B57D30 inline-six diesel engine, a 3.0-liter (2993 cc) unit. This engine benefits from BMW’s latest diesel technology, including a high-pressure common rail fuel injection system and a twin-scroll turbocharger with variable geometry turbine (VGT) technology. The mild hybrid system incorporates a 48V starter-generator, providing an additional 11 horsepower and 25 Nm (18.44 lb-ft) of torque. This system enables features like smoother start-stop operation, extended coasting, and a slight power boost during acceleration. The engine produces 286 horsepower at 4000 rpm and a substantial 650 Nm (479.42 lb-ft) of torque between 1500 and 2500 rpm. The Steptronic 8-speed automatic transmission is specifically tuned to complement the engine’s characteristics, offering smooth and efficient gear changes.
Driving Characteristics
The 430d Automatic delivers a refined and capable driving experience. The combination of the potent diesel engine and the xDrive all-wheel-drive system results in strong acceleration – 0 to 60 mph in approximately 4.8 seconds. While not as overtly sporty as the M440i, the 430d provides ample power for both highway cruising and spirited driving. The automatic transmission is well-programmed, offering quick shifts and intelligent gear selection. Compared to a manual transmission version (if offered), the automatic prioritizes comfort and ease of use, though it may slightly diminish driver engagement. The mild hybrid system contributes to improved fuel economy and reduced emissions without noticeably impacting performance.
Equipment & Trim Levels
The 430d LCI typically comes well-equipped as standard. Key features include BMW’s Live Cockpit Professional (digital instrument cluster and infotainment system), leather upholstery, automatic climate control, and a comprehensive suite of driver-assistance systems. Optional extras include premium sound systems, adaptive suspension, upgraded interior trim materials, and various styling packages. The LCI facelift brought updated interior trim options and enhanced connectivity features.
Chassis & Braking
The 4 Series Coupe utilizes a sophisticated chassis design featuring a MacPherson strut front suspension and a multi-link rear suspension. The suspension is tuned to provide a balance between comfort and handling. The xDrive all-wheel-drive system intelligently distributes torque between the front and rear axles, enhancing traction and stability in all weather conditions. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. The electronic stability control system (DSC) further enhances safety and control.
Market Reception & Comparison
The 430d LCI has been generally well-received by automotive critics. It’s praised for its refined powertrain, comfortable ride, and advanced technology. Compared to the 420i, the 430d offers significantly more performance and torque, making it a more compelling choice for drivers who prioritize driving enjoyment. Compared to the M440i, the 430d provides a more fuel-efficient and affordable option, albeit with slightly less outright performance. Fuel economy is a strong point, with combined WLTP figures ranging from 5.5 to 6.2 l/100 km (42.8 – 37.9 US mpg).
Legacy
The B57 engine family has proven to be remarkably reliable, and the addition of the mild hybrid system in the 430d LCI is expected to further enhance its longevity. While long-term reliability data for the LCI facelift is still emerging, the B57’s track record suggests that this powertrain should provide years of dependable service. On the used car market, the 430d is likely to hold its value well due to its combination of performance, efficiency, and BMW’s reputation for quality.
