The BMW 4 Series Gran Coupe (F36), specifically the 430d xDrive Steptronic variant produced from 2017 to 2021, represents a compelling blend of performance, practicality, and luxury within the BMW lineup. This model, part of the F36 lifecycle facelift, aimed to offer a more refined and efficient grand touring experience compared to its predecessors. Positioned as a mid-range offering within the 4 Series Gran Coupe family, it slotted between the entry-level 420d and the higher-performance 440i models. The “Gran Coupe” designation signifies BMW’s four-door coupe body style, offering a sleeker profile than the traditional 3 Series sedan while maintaining rear passenger accessibility.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Gran Coupe (F36, facelift 2017) |
| Type (Engine) | 430d (258 Hp) xDrive Steptronic |
| Start of production | 2017 |
| End of production | 2021 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 6.2-6.4 l/100 km (37.9 – 36.8 US mpg, 45.6 – 44.1 UK mpg, 16.1 – 15.6 km/l) |
| Fuel consumption (extra urban) | 4.9-5.0 l/100 km (48 – 47 US mpg, 57.6 – 56.5 UK mpg, 20.4 – 20 km/l) |
| Fuel consumption (combined) | 5.3-5.5 l/100 km (44.4 – 42.8 US mpg, 53.3 – 51.4 UK mpg, 18.9 – 18.2 km/l) |
| CO2 emissions | 140-145 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.3 sec |
| Acceleration 0 – 62 mph | 5.3 sec |
| Acceleration 0 – 60 mph | 5 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 6.5 kg/Hp, 153.6 Hp/tonne |
| Weight-to-torque ratio | 3 kg/Nm, 333.3 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 | 1680 kg (3703.77 lbs.) |
| Max. weight | 2240 kg (4938.35 lbs.) |
| Max load | 560 kg (1234.59 lbs.) |
| Trunk (boot) space – minimum | 480 l (16.95 cu. ft.) |
| Trunk (boot) space – maximum | 1300 l (45.91 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 | 4640 mm (182.68 in.) |
| Width | 1825 mm (71.85 in.) |
| Height | 1404 mm (55.28 in.) |
| Wheelbase | 2810 mm (110.63 in.) |
| Front track | 1543 mm (60.75 in.) |
| Rear (Back) track | 1592 mm (62.68 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.) |
| Drive wheel | All wheel drive (4×4) |
| 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; 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
The heart of the 430d xDrive Steptronic is BMW’s N57D30A 3.0-liter inline-six diesel engine. This engine is a highly refined unit, known for its smooth operation and strong torque output. The N57 family of engines utilizes a common-rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. The 430d specifically benefits from a twin-turbocharger setup – a smaller turbo for quick response at low engine speeds and a larger turbo for sustained power at higher RPMs. This configuration contributes to the engine’s impressive 560 Nm (413 lb-ft) of torque available from just 1500 rpm, providing effortless acceleration. The engine also features variable valve timing (VANOS) and Double-VANOS technology to further enhance efficiency and performance. Paired with the engine is BMW’s 8-speed Steptronic automatic transmission. This transmission is renowned for its smooth and quick shifts, and its ability to adapt to driving conditions. The ‘Steptronic’ designation indicates the inclusion of features like shift paddles and adaptive shift programs.
Driving Characteristics
The 430d xDrive Steptronic delivers a refined and capable driving experience. The abundance of low-end torque from the diesel engine makes it exceptionally easy to drive in everyday situations, with minimal need for downshifting. Acceleration to 60 mph takes approximately 5 seconds, making it a genuinely quick car. Compared to the 420d, the 430d offers a noticeable performance boost, while remaining more fuel-efficient than the 440i gasoline variant. The xDrive all-wheel-drive system provides excellent traction in all weather conditions, enhancing stability and confidence. The 8-speed automatic transmission contributes to a relaxed cruising experience on the highway, while also offering responsive shifts when a more dynamic driving style is desired. The gear ratios are tuned for a balance between fuel economy and performance, prioritizing mid-range acceleration over outright top-end speed.
Equipment & Trim Levels
The 430d xDrive Steptronic typically came well-equipped as standard. Common features included leather upholstery, automatic climate control, a BMW iDrive infotainment system with a central display screen, and a suite of safety features such as ABS, stability control, and multiple airbags. Optional extras were plentiful, allowing buyers to personalize their vehicles. These included features like a premium sound system, navigation, heated seats, a sunroof, and advanced driver-assistance systems such as lane departure warning and adaptive cruise control. Interior trim options ranged from wood veneers to aluminum accents, allowing for a degree of customization. The standard dashboard configuration featured a driver-focused layout with clear instrumentation and intuitive controls.
Chassis & Braking
The F36 4 Series Gran Coupe utilizes a sophisticated chassis design. The front suspension features independent coil springs and struts, while the rear suspension employs an independent multi-link setup. This configuration provides a good balance between ride comfort and handling precision. The 430d models typically featured ventilated disc brakes on all four wheels, providing ample stopping power. The xDrive all-wheel-drive system distributes power between the front and rear axles as needed, optimizing traction and stability. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering. The steering system is an electric power-assisted rack and pinion setup, offering precise and responsive steering feel.
Market Reception & Comparison
The 430d xDrive Steptronic was generally well-received by automotive critics. It was praised for its strong performance, refined ride quality, and fuel efficiency. Compared to the 420d, the 430d offered a significant power upgrade without sacrificing fuel economy. Against the 440i, it provided a more economical alternative, albeit with slightly less outright performance. The diesel engine’s torque delivery was particularly appreciated, making it a comfortable and effortless grand tourer. Some critics noted that the ride could be slightly firm on certain road surfaces, but overall, the 430d was considered a well-rounded and capable vehicle.
Legacy
The N57 engine family, including the N57D30A found in the 430d, has proven to be remarkably reliable over the long term, provided it receives regular maintenance. The 8-speed Steptronic transmission is also known for its durability. In the used car market, the 430d xDrive Steptronic represents a compelling value proposition, offering a blend of performance, luxury, and fuel efficiency at a relatively affordable price point. However, potential buyers should be aware of the potential for diesel particulate filter (DPF) issues, particularly if the vehicle has been primarily used for short trips. Overall, the 430d remains a desirable and well-regarded vehicle, offering a refined and enjoyable driving experience.
