The BMW 4 Series Coupe (F32), specifically the 430d xDrive Steptronic variant produced from 2017 to 2020, represents a mid-cycle refresh of the F32 generation. This model year saw updates to styling, technology, and engine options, solidifying the 4 Series’ position as BMW’s premium compact executive coupe. The 430d, powered by a turbocharged diesel engine and paired with an eight-speed automatic transmission and BMW’s xDrive all-wheel-drive system, occupied a significant position in the lineup, appealing to buyers seeking a blend of performance, efficiency, and all-weather capability. It sat above the 420d in terms of power and refinement, but below the more performance-focused M4.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Coupe (F32, facelift 2017) |
| Type (Engine) | 430d (258 Hp) xDrive Steptronic |
| Start of production | 2017 |
| End of production | 2020 |
| 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, 47.1 – 45.6 UK mpg, 16.7 – 16.1 km/l) |
| Fuel consumption (extra urban) | 4.8-4.9 l/100 km (49 – 48 US mpg, 58.9 – 57.6 UK mpg, 20.8 – 20.4 km/l) |
| Fuel consumption (combined) | 5.2-5.4 l/100 km (45.2 – 43.6 US mpg, 54.3 – 52.3 UK mpg, 19.2 – 18.5 km/l) |
| CO2 emissions | 137-142 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 | 4640 mm (182.68 in.) |
| Width | 1825 mm (71.85 in.) |
| Height | 1392 mm (54.8 in.) |
| Wheelbase | 2810 mm (110.63 in.) |
| Front track | 1543 mm (60.75 in.) |
| Rear (Back) track | 1589 mm (62.56 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 |
INTRODUCTION
The BMW 430d xDrive Steptronic, part of the F32 4 Series Coupe lineup (2017-2020), was designed to appeal to drivers seeking a sophisticated and efficient grand tourer. Built on the 1HX0/A3 platform shared with other BMW models, the 4 Series aimed to blend sporty handling with luxurious comfort. The 430d variant specifically targeted buyers who prioritized fuel economy and torque, making it well-suited for long-distance driving. The facelift introduced in 2017 brought revised styling cues, including updated headlights and taillights, along with enhancements to the interior technology and driver assistance systems.
Powertrain & Engine Architecture
At the heart of the 430d lies the N57D30A, a 3.0-liter inline-six diesel engine. This engine is a hallmark of BMW’s diesel technology, known for its smooth operation and robust construction. The N57D30A utilizes a common-rail direct injection system, delivering fuel at extremely high pressure for optimized combustion. It’s equipped with a twin-scroll turbocharger and an intercooler to maximize power and efficiency. 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 broad torque curve provides strong acceleration in virtually any gear. The engine also incorporates a particulate filter to reduce emissions, meeting Euro 6 standards. The engine is mated to an eight-speed Steptronic automatic transmission, known for its quick and smooth shifts. This transmission allows for both fully automatic operation and manual gear selection via steering wheel-mounted paddles.
Driving Characteristics
The 430d xDrive Steptronic delivers a refined and capable driving experience. The abundance of torque from the diesel engine provides effortless acceleration, making overtaking and merging onto highways a breeze. While not as overtly sporty as the gasoline-powered 440i or M4, the 430d offers a more than adequate level of performance for most drivers. The xDrive all-wheel-drive system provides excellent traction in all weather conditions, enhancing stability and confidence. The eight-speed automatic transmission is well-tuned, offering smooth and responsive shifts. The gear ratios are optimized for both fuel efficiency and performance, with a tall top gear for relaxed cruising on the highway. Compared to the 420d, the 430d offers a noticeable increase in power and torque, resulting in quicker acceleration and a more relaxed driving experience, especially when fully loaded or traveling uphill.
Equipment & Trim Levels
The 430d xDrive Steptronic typically came well-equipped as standard. 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 customize their vehicle to their preferences. Popular options included a premium sound system, navigation system, heated seats, a sunroof, and various driver assistance systems like adaptive cruise control and lane departure warning. Interior trim options ranged from wood veneers to aluminum accents, allowing for a personalized aesthetic.
Chassis & Braking
The 4 Series Coupe features a sophisticated chassis designed to deliver a balance of comfort and handling. The front suspension utilizes independent coil springs, while the rear suspension employs an independent multi-link setup. This configuration provides excellent ride quality and precise handling. The 430d xDrive Steptronic is equipped with 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. The steering is electrically assisted, offering precise and responsive control.
Market Reception & Comparison
The 430d xDrive Steptronic was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, and all-weather capability. Fuel economy was a significant selling point, with the 430d offering considerably better mileage than its gasoline-powered counterparts. Compared to the 420d, the 430d offered a more satisfying level of performance, justifying the higher price tag for many buyers. However, some critics noted that the diesel engine lacked the sporty character of the gasoline engines. Reliability has generally been good, although diesel engines can be more susceptible to issues with the particulate filter and fuel injection system if not properly maintained.
Legacy
The BMW 430d xDrive Steptronic has proven to be a durable and reliable vehicle. The N57D30A engine is known for its longevity, and with proper maintenance, it can provide many years of trouble-free service. On the used car market, the 430d remains a popular choice for buyers seeking a premium coupe with good fuel economy and all-weather capability. Its blend of performance, comfort, and practicality has ensured its continued appeal, making it a well-regarded example of BMW’s engineering prowess.
