The BMW 4 Series Coupe (F32) 430d Steptronic, produced from 2013 to 2016, represents a compelling blend of performance and efficiency within the broader 4 Series lineup. Positioned as a mid-range offering, it catered to drivers seeking a refined grand tourer experience with the benefits of a modern diesel engine. This variant occupied a space between the entry-level 420d and the more potent 435i, appealing to those prioritizing fuel economy and torque delivery without sacrificing BMW’s signature driving dynamics. The F32 generation 4 Series, launched as a replacement for the 3 Series Coupe, aimed to establish a more distinct identity for the two-door model, emphasizing style and a more focused driving experience.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Coupe (F32) |
| Type (Engine) | 430d (258 Hp) Steptronic |
| Start of production | 2013 |
| End of production | 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 5.7-5.8 l/100 km (41.3 – 40.6 US mpg) |
| Fuel consumption (extra urban) | 4.5-4.6 l/100 km (52.3 – 51.1 US mpg) |
| Fuel consumption (combined) | 4.9-5.0 l/100 km (48 – 47 US mpg) |
| CO2 emissions | 129-132 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.5 sec |
| Acceleration 0 – 62 mph | 5.5 sec |
| Acceleration 0 – 60 mph | 5.2 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 6 kg/Hp, 167.5 Hp/tonne |
| Weight-to-torque ratio | 2.8 kg/Nm, 363.6 Nm/tonne |
| Power | 258 Hp @ 4000 rpm |
| Torque | 560 Nm @ 2000-3000 rpm (413.03 lb.-ft. @ 2000-3000 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 | 1540 kg (3395.12 lbs.) |
| Max. weight | 2060 kg (4541.52 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 | 1377 mm (54.21 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) | 130 mm (5.12 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle (turning diameter) | 11.3 m (37.07 ft.) |
| Drivetrain Architecture | 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 |
Powertrain & Engine Architecture
At the heart of the 430d Steptronic lies the N57D30A, a 3.0-liter inline-six diesel engine. This engine is a cornerstone of BMW’s diesel offerings from the early 2010s, known for its refinement and strong torque output. The N57 features a common-rail direct 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 8-speed Steptronic automatic transmission, a ZF-sourced unit, is integral to the driving experience. It offers smooth and quick shifts, contributing to both performance and fuel efficiency. The transmission’s wide gear ratio spread allows the engine to operate within its optimal torque band more frequently.
Driving Characteristics
The 430d Steptronic delivers a distinctly different driving experience compared to its gasoline-powered siblings. While lacking the outright acceleration of the 435i, the 430d compensates with a substantial 560 Nm (413 lb-ft) of torque available from just 2000 rpm. This translates to effortless cruising and strong mid-range acceleration, making it well-suited for long-distance journeys. The 8-speed automatic transmission is well-tuned, providing seamless gear changes and contributing to a relaxed driving experience. Compared to a manual transmission, the Steptronic offers convenience, but some enthusiasts might find it slightly less engaging. The rear-wheel-drive configuration provides a balanced feel, although traction can be a concern in adverse weather conditions.
Equipment & Trim Levels
The 430d Steptronic typically came equipped with a generous array of standard features. These included leather upholstery, automatic climate control, a BMW iDrive infotainment system with a central display screen, and a suite of safety features like ABS, stability control, and multiple airbags. Optional extras were plentiful, allowing buyers to personalize their vehicles. Popular options included a navigation system, a premium sound system, heated seats, a sunroof, and various driver-assistance systems like lane departure warning and adaptive cruise control. Interior trim options ranged from basic cloth to more luxurious leather and wood combinations.
Chassis & Braking
The F32 4 Series utilizes a sophisticated chassis design. The front suspension features independent coil springs and struts, while the rear employs an independent multi-link setup. This configuration provides a good balance between ride comfort and handling precision. The 430d typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The steering system is a rack-and-pinion setup with electric power assistance, offering precise and responsive steering feel. Stabilizer bars are fitted front and rear to reduce body roll during cornering.
Market Reception & Comparison
The 430d Steptronic was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, and strong fuel economy. Compared to the 420d, the 430d offered a noticeable performance upgrade, while remaining more economical than the 435i. However, some critics noted that the diesel engine lacked the aural excitement of the gasoline engines. In terms of reliability, the N57 engine has proven to be generally robust, although preventative maintenance, particularly regarding the diesel particulate filter (DPF), is crucial.
Legacy
The BMW 4 Series Coupe (F32) 430d Steptronic remains a popular choice in the used car market. Its combination of performance, efficiency, and refinement continues to appeal to buyers seeking a premium grand tourer. The N57 engine, while requiring diligent maintenance, has demonstrated good long-term reliability. The 8-speed Steptronic transmission is also known for its durability. As with any used vehicle, a thorough inspection and maintenance history check are essential before purchase. The 430d represents a sweet spot in the F32 4 Series lineup, offering a compelling blend of attributes that continue to resonate with drivers today.
