The BMW 4 Series Coupe (F32), specifically the 435d xDrive Steptronic variant produced from 2017 to 2020, represents a mid-cycle refresh (LCI – Life Cycle Impulse) of the F32 generation. Introduced as a more refined and technologically advanced iteration of the original 4 Series Coupe launched in 2013, this model aimed to blend sporty handling with diesel efficiency and luxury. Positioned as a premium offering within the 4 Series lineup, the 435d xDrive Steptronic catered to buyers seeking a high-performance coupe with lower running costs than its gasoline-powered siblings. It sat above the 420d and 430d models in terms of power and performance, while remaining below the more focused M4.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Coupe (F32, facelift 2017) |
| Type (Engine) | 435d (313 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) | 6.4-6.6 l/100 km (36.8 – 35.6 US mpg, 44.1 – 42.8 UK mpg, 15.6 – 15.2 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) | 5.4-5.6 l/100 km (43.6 – 42 US mpg, 52.3 – 50.4 UK mpg, 18.5 – 17.9 km/l) |
| CO2 emissions | 143-147 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 4.7 sec |
| Acceleration 0 – 62 mph | 4.7 sec |
| Acceleration 0 – 60 mph | 4.5 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 5.2 kg/Hp, 192.6 Hp/tonne |
| Weight-to-torque ratio | 2.6 kg/Nm, 387.7 Nm/tonne |
| Power | 313 Hp @ 4400 rpm |
| Torque | 630 Nm @ 1500-2500 rpm (464.66 lb.-ft. @ 1500-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N57D30B |
| 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 | 1625 kg (3582.51 lbs.) |
| Max. weight | 2145 kg (4728.92 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) | 0.30 |
| 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 |
Powertrain & Engine Architecture
The heart of the 435d xDrive Steptronic is BMW’s N57D30B inline-six diesel engine. This 3.0-liter engine utilizes a sophisticated common-rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. The N57 engine family is renowned for its durability and efficiency. This particular iteration features a twin-turbocharger setup – a smaller turbo for quick response at low RPMs and a larger turbo for sustained power at higher speeds. An intercooler further enhances performance by cooling the compressed intake air. The engine produces 313 horsepower at 4,400 rpm and a substantial 630 Nm (464.66 lb-ft) of torque between 1,500 and 2,500 rpm. This broad torque curve contributes to strong acceleration in real-world driving conditions. The engine is paired with BMW’s 8-speed Steptronic automatic transmission, known for its smooth and quick shifts. The ‘xDrive’ designation indicates BMW’s intelligent all-wheel-drive system, which provides enhanced traction and stability, particularly in adverse weather conditions.
Driving Characteristics
The 435d xDrive Steptronic delivers a refined and capable driving experience. The abundant torque from the diesel engine provides effortless acceleration, making it well-suited for both highway cruising and spirited driving. While not as overtly sporty as the M4, the 435d offers a good balance between performance and comfort. The 8-speed automatic transmission is well-programmed, providing smooth gear changes and responsive kickdowns. The xDrive all-wheel-drive system enhances grip and stability, inspiring confidence in various driving conditions. Compared to the 420d, the 435d offers a significant performance upgrade, while the 430d sits in between. The 435d’s acceleration of 4.7 seconds to 62 mph is noticeably quicker than the lower-powered diesel variants. However, it doesn’t possess the raw, high-revving character of the gasoline-powered 440i.
Equipment & Trim Levels
The 435d 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 included a premium sound system, navigation, adaptive cruise control, a head-up display, and various interior trim options. The LCI (Life Cycle Impulse) facelift brought updated interior trim options and revised exterior styling cues, including new LED headlights and taillights.
Chassis & Braking
The 4 Series Coupe features a sophisticated chassis design with a multi-link rear suspension, contributing to its agile handling. The 435d xDrive Steptronic utilizes 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 suspension is tuned to provide a balance between comfort and handling, offering a relatively compliant ride without sacrificing cornering ability.
Market Reception & Comparison
The 435d xDrive Steptronic was generally well-received by automotive critics. It was praised for its strong performance, fuel efficiency, and refined driving experience. The diesel engine’s torque was a particular highlight, making it a capable and comfortable grand tourer. Compared to its gasoline-powered counterparts, the 435d offered significantly better fuel economy, making it an attractive option for drivers who prioritize running costs. However, some critics noted that the diesel engine lacked the responsiveness and sound of the gasoline engines. Reliability has generally been good, although diesel particulate filter (DPF) issues can occur with infrequent long-distance driving.
Legacy
The BMW 435d xDrive Steptronic (F32) remains a desirable used car option. The N57 engine is known for its longevity when properly maintained. The combination of performance, efficiency, and luxury continues to appeal to buyers seeking a refined and capable coupe. While newer BMW models offer more advanced technology, the F32 435d represents a sweet spot in terms of value and driving experience. Regular maintenance, including oil changes and DPF regeneration, is crucial to ensure the long-term reliability of this powertrain.
