The BMW 4 Series Gran Coupe (F36), specifically the 430d variant with the Steptronic automatic transmission, was produced from 2017 to 2021 as part of the F36 lifecycle facelift. This model represents BMW’s attempt to blend the sporty aesthetics of the 4 Series coupe with the practicality of a four-door Gran Coupe body style. The 430d occupied a mid-to-upper position within the 4 Series Gran Coupe lineup, offering a balance of performance, efficiency, and luxury features. It served as a diesel-powered alternative to the gasoline-fueled 420i, 430i, and 440i models, primarily targeting European markets where diesel engines remained popular due to favorable taxation and fuel economy.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Gran Coupe (F36, facelift 2017) |
| Type (Engine) | 430d (258 Hp) Steptronic |
| Start of production | 2017 |
| End of production | 2021 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 5.9-6.1 l/100 km (39.9 – 38.6 US mpg, 47.9 – 46.3 UK mpg, 16.9 – 16.4 km/l) |
| Fuel consumption (extra urban) | 4.6-4.8 l/100 km (51.1 – 49 US mpg, 61.4 – 58.9 UK mpg, 21.7 – 20.8 km/l) |
| Fuel consumption (combined) | 5.1-5.3 l/100 km (46.1 – 44.4 US mpg, 55.4 – 53.3 UK mpg, 19.6 – 18.9 km/l) |
| CO2 emissions | 134-139 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.6 sec |
| Acceleration 0 – 62 mph | 5.6 sec |
| Acceleration 0 – 60 mph | 5.3 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 | 2175 kg (4795.05 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 | 1389 mm (54.69 in.) |
| Wheelbase | 2810 mm (110.63 in.) |
| Front track | 1545 mm (60.83 in.) |
| Rear (Back) track | 1592 mm (62.68 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 | 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; 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 |
INTRODUCTION
The BMW 430d Gran Coupe, launched during the F36 facelift in 2017, represented a sophisticated offering in the premium four-door coupe segment. Built on the BMW Group’s flexible platform (shared with the 3 Series), the F36 Gran Coupe aimed to provide a more stylish and practical alternative to traditional sedans. The 430d variant, powered by the N57D30A engine, was a key component of the lineup, appealing to buyers seeking a blend of performance, fuel efficiency, and refined driving dynamics. This model continued in production until 2021, when it was superseded by the G26 generation 4 Series Gran Coupe.
Powertrain & Engine Architecture
At the heart of the 430d Gran Coupe lies the BMW N57D30A, a 3.0-liter inline-six diesel engine. This engine is a member of the highly regarded N57 family, known for its robust construction and strong performance. The N57D30A utilizes a common-rail direct fuel injection system, delivering fuel at extremely high pressures for optimized combustion. It’s equipped with a twin-turbocharger setup – a low-pressure turbocharger combined with a high-pressure turbocharger – to minimize turbo lag and provide a broad torque curve. The engine also features variable valve timing (VANOS) and variable turbine geometry (VTG) on the turbochargers, further enhancing efficiency and responsiveness. The engine produces 258 horsepower at 4,000 rpm and a substantial 560 Nm (413 lb-ft) of torque between 1,500 and 3,000 rpm. This torque output is a defining characteristic of the N57 engine, providing strong acceleration in everyday driving situations.
The “Steptronic” transmission refers to BMW’s 8-speed automatic gearbox. This transmission is known for its smooth and quick shifts, contributing to both performance and fuel economy. It offers a manual shift mode, allowing drivers to take greater control, and features adaptive learning, adjusting shift points based on driving style. The transmission is longitudinally mounted, driving the rear wheels.
Driving Characteristics
The 430d Gran Coupe with the Steptronic transmission delivers a refined and capable driving experience. The abundant torque from the N57 engine provides effortless acceleration, making overtaking and merging onto highways easy. While not as overtly sporty as the gasoline-powered 440i, the 430d offers a more than adequate level of performance for most drivers. The 8-speed automatic transmission complements the engine well, providing smooth and timely gear changes. The gear ratios are tuned to prioritize both fuel efficiency and responsiveness. Compared to a manual transmission equipped 430d, the Steptronic version sacrifices some driver engagement but gains in convenience and ease of use. The suspension setup, typically featuring BMW’s balance of comfort and control, provides a composed ride, even on less-than-perfect road surfaces.
Equipment & Trim Levels
The 430d Gran Coupe 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 like ABS, stability control, and multiple airbags. Optional extras were plentiful, allowing buyers to customize their vehicles. These included features like a premium sound system, navigation system, head-up display, adaptive cruise control, and various interior trim options. The specific trim level (Luxury Line, Sport Line, or M Sport) influenced the exterior styling and interior appointments, with the M Sport package offering a more aggressive look and sport-tuned suspension.
Chassis & Braking
The F36 Gran Coupe utilizes a MacPherson strut front suspension and a multi-link rear suspension. This setup provides a good balance of ride comfort and handling precision. The 430d typically featured ventilated disc brakes on all four wheels, providing ample stopping power. The braking system is assisted by ABS (Anti-lock Braking System) and electronic brake-force distribution. Steering is via a rack-and-pinion system with electric power assistance, offering precise and responsive steering feel.
Market Reception & Comparison
The 430d Gran Coupe was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, and practical interior. The diesel engine’s fuel economy was a significant selling point, particularly in Europe. Compared to the 420i and 430i gasoline models, the 430d offered superior torque and fuel efficiency, albeit with a slightly higher purchase price. Against competitors like the Audi A5 Sportback and the Mercedes-Benz CLS, the 430d Gran Coupe held its own, offering a compelling combination of style, performance, and practicality.
Legacy
The N57D30A engine has proven to be a durable and reliable powerplant, with many examples exceeding high mileage with proper maintenance. The 430d Gran Coupe, as a whole, has maintained a relatively good reputation for reliability, although, like any complex vehicle, it is susceptible to age-related issues. On the used car market, the F36 430d Gran Coupe remains a desirable option for buyers seeking a premium four-door coupe with a fuel-efficient diesel engine. Its blend of style, performance, and practicality continues to appeal to a wide range of drivers.
