The BMW 4 Series Coupe (F32) 430d xDrive Steptronic, produced from 2014 to 2016, represents a compelling blend of performance, efficiency, and luxury within the F32 4 Series generation. Positioned as a mid-range offering in the 4 Series Coupe lineup, the 430d catered to buyers seeking a diesel-powered alternative to the gasoline engines, offering enhanced fuel economy and strong torque delivery. This variant combined a potent 3.0-liter inline-six diesel engine with BMW’s xDrive all-wheel-drive system and an eight-speed Steptronic automatic transmission, creating a grand touring coupe capable of both spirited driving and comfortable long-distance journeys.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Coupe (F32) |
| Type (Engine) | 430d (258 Hp) xDrive Steptronic |
| Start of production | 2014 |
| End of production | 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 6.0-6.2 l/100 km (39.2 – 37.9 US mpg) |
| Fuel consumption (extra urban) | 4.8-4.9 l/100 km (49 – 48 US mpg) |
| Fuel consumption (combined) | 5.2-5.4 l/100 km (45.2 – 43.6 US mpg) |
| CO2 emissions | 137-141 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.2 sec |
| Acceleration 0 – 62 mph | 5.2 sec |
| Acceleration 0 – 60 mph | 4.9 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 6.3 kg/Hp, 159.8 Hp/tonne |
| Weight-to-torque ratio | 2.9 kg/Nm, 346.7 Nm/tonne |
| Power | 258 Hp @ 4000 rpm |
| Torque | 560 Nm @ 1500-3000 rpm (413.03 lb.-ft. @ 1500-3000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N57D30A |
| 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 |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 7.2 l (7.61 US qt | 6.34 UK qt) |
| Kerb Weight | 1615 kg (3560.47 lbs.) |
| Max. weight | 2135 kg (4706.87 lbs.) |
| Max load | 520 kg (1146.4 lbs.) |
| Trunk (boot) space – minimum | 445 l (15.72 cu. ft.) |
| Fuel tank capacity | 57 l (15.06 US gal | 12.54 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 | 4638 mm (182.6 in.) |
| Width | 1825 mm (71.85 in.) |
| Height | 1392 mm (54.8 in.) |
| Wheelbase | 2810 mm (110.63 in.) |
| Front track | 1545 mm (60.83 in.) |
| Rear (Back) track | 1594 mm (62.76 in.) |
| Ride height (ground clearance) | 145 mm (5.71 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle (turning diameter) | 11.8 m (38.71 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| Front suspension | Independent coil spring |
| Rear suspension | Independent multi-link suspension |
| 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 94W; 225/45 R18; 255/40 R18; 225/40 R19; 255/35 R19 |
| Wheel rims size | 7.5J x 17; 8J x 18; 8.5J x 18; 8J x 19; 8.5J x 19 |
Powertrain & Engine Architecture
At the heart of the 430d xDrive Steptronic lies the N57D30A engine, a 3.0-liter inline-six diesel engine. This engine is a cornerstone of BMW’s diesel offerings, known for its smooth operation, robust construction, and impressive torque output. The N57 features a common-rail direct fuel injection system, delivering fuel at extremely high pressures for optimized combustion. A twin-turbocharger setup, employing a variable geometry turbocharger (VGT) and a smaller turbocharger, provides both low-end responsiveness and high-end power. The engine also incorporates an intercooler to further enhance performance by cooling the intake air. The eight-speed Steptronic automatic transmission is a key component, offering smooth and quick shifts. It’s programmed for both fuel efficiency and performance, adapting to driving style and conditions. The xDrive all-wheel-drive system distributes power between the front and rear axles as needed, enhancing traction and stability, particularly in adverse weather conditions.
Driving Characteristics
The 430d xDrive Steptronic delivers a refined and capable driving experience. The 560 Nm (413 lb-ft) of torque available from 1500-3000 rpm provides strong acceleration in everyday driving situations. While not as overtly sporty as the gasoline-powered 435i, the 430d offers ample power for confident overtaking and highway cruising. The eight-speed automatic transmission contributes to a relaxed driving experience, with well-chosen gear ratios that keep the engine in its optimal power band. Compared to the manual transmission versions of the 430d, the Steptronic offers greater convenience, especially in urban traffic. The xDrive system provides enhanced grip and stability, making the car feel secure and planted in all conditions. The steering is precise and well-weighted, providing good feedback to the driver.
Equipment & Trim Levels
The 430d xDrive Steptronic typically came well-equipped as standard. Interior features included leather upholstery, power-adjustable front seats, a BMW iDrive infotainment system with a central display screen, and automatic climate control. Standard safety features included ABS, stability control, and multiple airbags. Optional extras included a premium sound system, navigation system, heated seats, a sunroof, and various driver-assistance systems such as lane departure warning and adaptive cruise control. Trim levels could vary slightly depending on the market, but generally, the 430d offered a luxurious and comfortable interior environment.
Chassis & Braking
The F32 4 Series Coupe features a sophisticated chassis design. The front suspension utilizes independent coil springs, while the rear suspension employs an independent multi-link setup. This configuration provides a good balance between ride comfort and handling precision. The 430d xDrive Steptronic typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The ABS (Anti-lock Braking System) helps to maintain control during hard braking. The suspension tuning was generally geared towards a balance of comfort and sporty handling, offering a more compliant ride than some of the more performance-focused 4 Series variants.
Market Reception & Comparison
The 430d xDrive Steptronic was generally well-received by automotive critics. It was praised for its fuel efficiency, strong torque output, and comfortable ride. Compared to the 420d, the 430d offered a significant performance upgrade, while still maintaining excellent fuel economy. Compared to the 435i, the 430d provided a more relaxed driving experience and lower running costs, appealing to buyers who prioritized efficiency and comfort over outright performance. The xDrive all-wheel-drive system was also a selling point, particularly in regions with inclement weather.
Legacy
The N57 engine family, including the N57D30A found in the 430d, has proven to be remarkably durable and reliable. While some early N57 engines experienced issues with timing chain wear, these were largely addressed in later revisions. The 430d xDrive Steptronic remains a popular choice in the used car market, offering a compelling combination of performance, efficiency, and luxury. Regular maintenance, including oil changes and adherence to BMW’s recommended service intervals, is crucial for ensuring the long-term reliability of this powertrain. The 430d represents a sweet spot in the F32 4 Series lineup, offering a refined and capable grand touring experience that continues to appeal to discerning drivers today.
