The BMW 4 Series Coupe (F32), specifically the 430i variant produced from 2017 to 2020 following the facelift, represents a compelling blend of performance and luxury within BMW’s lineup. Positioned as a mid-range offering, the 430i served as a step up from the 420i while remaining more accessible than the higher-performance 440i. Built on the F32 platform, which is a coupe and convertible derivative of the F30 3 Series, the 430i aimed to deliver a more dynamic and stylish driving experience than its sedan sibling. This generation of the 4 Series focused on refining the design language established by the E92 generation, offering a more aggressive stance and a driver-focused interior.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Coupe (F32, facelift 2017) |
| Type (Engine) | 430i (252 Hp) |
| Start of production | 2017 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 7.9-8.4 l/100 km (29.8 – 28 US mpg, 35.8 – 33.6 UK mpg, 12.7 – 11.9 km/l) |
| Fuel consumption (extra urban) | 5.1-5.4 l/100 km (46.1 – 43.6 US mpg, 55.4 – 52.3 UK mpg, 19.6 – 18.5 km/l) |
| Fuel consumption (combined) | 6.1-6.5 l/100 km (38.6 – 36.2 US mpg, 46.3 – 43.5 UK mpg, 16.4 – 15.4 km/l) |
| CO2 emissions | 143-151 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.9 sec |
| Acceleration 0 – 62 mph | 5.9 sec |
| Acceleration 0 – 60 mph | 5.6 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 5.9 kg/Hp, 169.1 Hp/tonne |
| Weight-to-torque ratio | 4.3 kg/Nm, 234.9 Nm/tonne |
| Power | 252 Hp @ 5200 rpm |
| Power per litre | 126.1 Hp/l |
| Torque | 350 Nm @ 1450-4800 rpm (258.15 lb.-ft. @ 1450-4800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B48B20B |
| Engine displacement | 1998 cm3 (121.93 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 94.6 mm (3.72 in.) |
| Compression ratio | 10.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Engine oil capacity | 5.25 l (5.55 US qt | 4.62 UK qt) |
| Coolant | 8.1 l (8.56 US qt | 7.13 UK qt) |
| Kerb Weight | 1490 kg (3284.89 lbs.) |
| Max. weight | 2010 kg (4431.29 lbs.) |
| Max load | 520 kg (1146.4 lbs.) |
| Trunk (boot) space – minimum | 445 l (15.72 cu. ft.) |
| Fuel tank capacity | 60 l (15.85 US gal | 13.2 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1600 kg (3527.4 lbs.) |
| Permitted trailer load without brakes | 745 kg (1642.44 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4640 mm (182.68 in.) |
| Width | 1825 mm (71.85 in.) |
| Height | 1377 mm (54.21 in.) |
| Wheelbase | 2810 mm (110.63 in.) |
| Front track | 1547 mm (60.91 in.) |
| Rear (Back) track | 1593 mm (62.72 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 | 6 gears, manual transmission |
| 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 430i is BMW’s B48B20B 2.0-liter turbocharged inline-four engine. This engine is a member of BMW’s modular engine family, known for its efficiency and performance. The B48 utilizes direct fuel injection, a single twin-scroll turbocharger, and variable valve timing (VANOS) and valve lift (Valvetronic) technologies to optimize power delivery and fuel economy. The engine produces 252 horsepower at 5200 rpm and 350 Nm (258 lb-ft) of torque between 1450 and 4800 rpm. The 6-speed manual transmission was standard, providing a direct connection to the drivetrain. The engine’s longitudinal mounting and rear-wheel-drive configuration contribute to the car’s balanced handling characteristics.
Driving Characteristics
The 430i with the manual transmission offers a responsive and engaging driving experience. While not as brutally fast as the 440i, the 2.0-liter turbo provides ample power for everyday driving and spirited backroad excursions. The 6-speed gearbox is well-matched to the engine’s powerband, allowing for precise gear changes. The rear-wheel-drive layout contributes to a balanced feel, and the car exhibits minimal understeer. Compared to the 420i, the 430i offers a noticeable increase in performance, while the 440i provides a more substantial power upgrade. The 430i strikes a good balance between performance and fuel efficiency, making it a practical choice for daily commuting and longer journeys.
Equipment & Trim Levels
The 430i came standard with a comprehensive list of features, including leatherette upholstery, automatic climate control, a 6.5-inch iDrive infotainment system, and a suite of safety features like ABS, stability control, and airbags. Optional extras included leather upholstery, a larger iDrive screen with navigation, a Harman Kardon sound system, adaptive cruise control, and a sunroof. Trim levels were relatively simple, with most customization options available as individual selections rather than pre-defined packages. Sport Line and Luxury Line packages were available, offering unique exterior and interior styling cues.
Chassis & Braking
The 430i utilizes a sophisticated chassis design featuring an independent coil spring suspension at the front and an independent multi-link suspension at the rear. This setup provides a comfortable ride while maintaining excellent handling characteristics. Ventilated disc brakes are used on all four wheels, providing ample stopping power. The car’s steering is precise and well-weighted, thanks to the electric power steering system. The chassis is designed to be relatively lightweight, contributing to the car’s agility.
Market Reception & Comparison
The 430i was generally well-received by automotive critics, who praised its balanced performance, stylish design, and comfortable interior. It was often seen as a sweet spot in the 4 Series lineup, offering a good compromise between performance and affordability. Compared to the 420i, the 430i provided a significant boost in power and driving enjoyment. Fuel economy was considered respectable for a performance coupe, and reliability was generally good. However, some critics noted that the 430i lacked the outright performance of the 440i.
Legacy
The BMW 430i (F32) has established itself as a desirable used car, offering a blend of style, performance, and reliability. The B48 engine has proven to be relatively robust, although regular maintenance is crucial. Common issues include oil leaks and occasional turbocharger problems. The 430i’s timeless design and engaging driving dynamics continue to appeal to enthusiasts, making it a popular choice in the used car market. Its position as a well-rounded and enjoyable coupe ensures its continued relevance for years to come.
