The BMW 4 Series Gran Coupe (F36) facelift 430i xDrive Steptronic, produced from 2017 to 2021, represents a compelling blend of performance, practicality, and luxury within the BMW lineup. Positioned as a mid-range offering in the 4 Series Gran Coupe family, it catered to buyers seeking a more engaging driving experience than the 420i, while remaining more accessible than the higher-performance M440i. This variant combined a potent 2.0-liter turbocharged four-cylinder engine with BMW’s xDrive all-wheel-drive system and the Steptronic eight-speed automatic transmission, creating a versatile grand tourer suitable for both daily commutes and spirited drives.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Gran Coupe (F36, facelift 2017) |
| Type (Engine) | 430i (252 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) | 7.5-7.8 l/100 km (31.4 – 30.2 US mpg, 37.7 – 36.2 UK mpg, 13.3 – 12.8 km/l) |
| Fuel consumption (extra urban) | 5.0-5.2 l/100 km (47 – 45.2 US mpg, 56.5 – 54.3 UK mpg, 20 – 19.2 km/l) |
| Fuel consumption (combined) | 5.9-6.2 l/100 km (39.9 – 37.9 US mpg, 47.9 – 45.6 UK mpg, 16.9 – 16.1 km/l) |
| CO2 emissions | 138-144 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 | 6.4 kg/Hp, 156 Hp/tonne |
| Weight-to-torque ratio | 4.6 kg/Nm, 216.7 Nm/tonne |
| Power | 252 Hp @ 5200 rpm |
| 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 | 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 | 60 l (15.85 US gal | 13.2 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1700 kg (3747.86 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) | 0.30 |
| 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 |
| 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 F36 4 Series Gran Coupe, launched in 2014, offered BMW enthusiasts a four-door coupe alternative to the traditional 3 Series sedan. The 2017 facelift brought subtle styling revisions, updated technology, and refinements to the engine lineup. The 430i xDrive Steptronic variant, powered by the B48 engine, was a key component of this range. It aimed to deliver a balance of performance, efficiency, and all-weather capability, making it a popular choice in markets with inclement weather conditions. The Gran Coupe body style, with its sloping roofline and hatchback-style trunk, provided increased practicality compared to the standard 4 Series Coupe.
Powertrain & Engine Architecture
At the heart of the 430i xDrive Steptronic lies the BMW B48B20B 2.0-liter inline-four cylinder engine. This engine is a member of BMW’s modular engine family, known for its efficiency and performance. It features direct fuel injection, a single twin-scroll turbocharger, and variable valve timing (VANOS) on both the intake and exhaust camshafts. The B48 engine produces 252 horsepower at 5200 rpm and 350 Nm (258 lb-ft) of torque between 1450 and 4800 rpm. The engine’s turbocharger is integrated into the exhaust manifold, improving responsiveness and reducing turbo lag. The Steptronic eight-speed automatic transmission is a torque-converter type, offering smooth and quick shifts. It features adaptive shift programs that adjust to the driver’s style and driving conditions. The xDrive all-wheel-drive system utilizes a multi-plate clutch to distribute torque between the front and rear axles, providing enhanced traction and stability.
Driving Characteristics
The 430i xDrive Steptronic delivers a refined and engaging driving experience. The 2.0-liter engine provides ample power for everyday driving and confident overtaking maneuvers. While not as overtly sporty as the M440i, the 430i offers a respectable 0-60 mph time of around 5.6 seconds. The eight-speed automatic transmission contributes to smooth acceleration and efficient cruising. The xDrive system provides excellent grip in all weather conditions, inspiring confidence on slippery surfaces. The steering is precise and well-weighted, offering good feedback to the driver. Compared to the manual transmission versions, the Steptronic automatic prioritizes comfort and ease of use, although it may slightly diminish the sense of driver involvement. The gear ratios are tuned for a balance of acceleration and fuel economy.
Equipment & Trim Levels
The 430i xDrive Steptronic came standard with a comprehensive list of features, including leather upholstery, power-adjustable front seats, a 9-inch iDrive infotainment system with navigation, automatic climate control, and a suite of safety features such as automatic emergency braking and lane departure warning. Optional extras included a premium sound system, a head-up display, adaptive cruise control, and various interior trim options. The Gran Coupe’s rear seats offer comfortable seating for two adults, and the 40/20/40 split-folding rear seats provide flexibility for carrying larger items. The power-operated tailgate adds to the convenience.
Chassis & Braking
The F36 4 Series Gran Coupe features a sophisticated chassis design. The front suspension utilizes independent coil springs and struts, while the rear suspension employs a multi-link setup. This configuration provides a comfortable ride and precise handling. The 430i xDrive Steptronic is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The ABS (Anti-lock Braking System) and stability control systems enhance safety and control. The steering system is an electric power-assisted rack-and-pinion setup, offering precise and responsive steering feel.
Market Reception & Comparison
The 430i xDrive Steptronic was generally well-received by automotive critics. It was praised for its blend of performance, luxury, and practicality. Compared to the 420i, the 430i offered a significant power upgrade, resulting in noticeably quicker acceleration. In contrast to the M440i, the 430i provided a more accessible price point and a slightly more comfortable ride. Fuel economy was considered competitive for its class, with combined fuel consumption figures ranging from 39.9 to 37.9 US mpg. Reliability reports suggest that the B48 engine is generally reliable, although some owners have reported issues with the cooling system and oil leaks.
Legacy
The BMW 4 Series Gran Coupe (F36) 430i xDrive Steptronic has established itself as a desirable used car option. The B48 engine has proven to be a durable and capable powerplant, and the Steptronic transmission is known for its smoothness and reliability. The xDrive all-wheel-drive system adds to the vehicle’s appeal in regions with harsh winters or challenging road conditions. As a result, well-maintained examples of this variant continue to command reasonable prices in the used car market, appealing to buyers seeking a stylish, practical, and engaging grand tourer.
