The BMW 4 Series Gran Coupe (F36) 430i Steptronic, produced for the 2016 model year, represents a compelling blend of performance, practicality, and luxury within the BMW 4 Series lineup. Positioned as a mid-range offering, it slotted between the entry-level 420i and the higher-performance 440i models. The F36 Gran Coupe, introduced in 2014, aimed to provide a more versatile alternative to the traditional 4 Series Coupe and Convertible, offering coupe-like styling with the added convenience of four doors and a larger, more accessible trunk. This variant, specifically equipped with the 2.0-liter turbocharged four-cylinder engine and the 8-speed Steptronic automatic transmission, was primarily marketed towards buyers seeking a refined and efficient grand touring experience.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Gran Coupe (F36) |
| Type (Engine) | 430i (252 Hp) Steptronic |
| Start of production | 2016 |
| End of production | 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7.0-7.4 l/100 km (33.6 – 31.8 US mpg, 40.4 – 38.2 UK mpg, 14.3 – 13.5 km/l) |
| Fuel consumption (extra urban) | 4.7-4.9 l/100 km (50 – 48 US mpg, 60.1 – 57.6 UK mpg, 21.3 – 20.4 km/l) |
| Fuel consumption (combined) | 5.5-5.8 l/100 km (42.8 – 40.6 US mpg, 51.4 – 48.7 UK mpg, 18.2 – 17.2 km/l) |
| CO2 emissions | 129-136 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 | 6.1 kg/Hp, 163.6 Hp/tonne |
| Weight-to-torque ratio | 4.4 kg/Nm, 227.3 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 | 1540 kg (3395.12 lbs.) |
| Max. weight | 2100 kg (4629.71 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%) | 1600 kg (3527.4 lbs.) |
| Permitted trailer load without brakes | 745 kg (1642.44 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4638 mm (182.6 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 | 1594 mm (62.76 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 94W; 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 Gran Coupe is BMW’s B48B20B 2.0-liter inline-four cylinder engine. This engine is a member of BMW’s modular engine family, utilizing a single-scroll, twin-scroll turbocharger with an intercooler to deliver 252 horsepower at 5200 rpm and 350 Nm (258 lb-ft) of torque between 1450 and 4800 rpm. The B48 features direct fuel injection, operating at a compression ratio of 10.2:1. The engine’s valvetrain employs BMW’s VANOS variable valve timing and Double-VANOS systems for both intake and exhaust valves, optimizing performance and efficiency across the rev range. Paired with the engine is the ZF 8HP80 8-speed Steptronic automatic transmission. This transmission is known for its smooth and quick shifts, contributing to both performance and fuel economy. The Steptronic function allows for manual gear selection via steering wheel-mounted paddles or the gear selector lever.
Driving Characteristics
The 430i Gran Coupe with the Steptronic transmission offers a balanced driving experience. Acceleration from 0 to 60 mph takes approximately 5.6 seconds, making it a reasonably quick vehicle. The 8-speed automatic transmission is well-tuned, providing seamless gear changes and keeping the engine within its optimal power band. Compared to the 6-speed manual transmission available on some 430i models, the Steptronic offers greater convenience, particularly in city driving. However, some enthusiasts might find the manual transmission more engaging. Compared to the more powerful 440i, the 430i offers slightly less outright performance, but it compensates with improved fuel efficiency and a lighter front-end feel. The gear ratios are optimized for both acceleration and highway cruising, providing a comfortable and refined ride.
Equipment & Trim Levels
The 430i Gran Coupe came standard with a generous array of features, including leatherette upholstery, automatic climate control, a 6.5-inch iDrive infotainment system with Bluetooth connectivity, and rear parking sensors. Optional extras included a premium Harman Kardon sound system, a head-up display, navigation, heated front seats, and a panoramic sunroof. Interior trim options ranged from basic matte finishes to more luxurious wood or aluminum accents. The standard dashboard configuration featured a driver-focused layout with clear instrumentation and intuitive controls. The Gran Coupe’s rear seats offered reasonable space for passengers, and the 40/20/40 split-folding rear seats provided flexibility for cargo carrying.
Chassis & Braking
The F36 430i Gran Coupe utilizes a sophisticated chassis design featuring an independent coil spring front suspension and an independent multi-link rear suspension. This setup provides a good balance between ride comfort and handling precision. The car is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control (ESC) are standard safety features. The steering is an electric power-assisted rack and pinion system, offering precise and responsive steering feel. The suspension tuning is slightly softer than that of the 4 Series Coupe, prioritizing comfort over outright sportiness.
Market Reception & Comparison
The 430i Gran Coupe was generally well-received by automotive critics. It was praised for its stylish design, comfortable ride, and refined powertrain. The Steptronic transmission was noted for its smoothness and efficiency. Compared to the 420i, the 430i offered a noticeable performance upgrade, while remaining relatively fuel-efficient. Compared to the 440i, it provided a more affordable entry point into the 4 Series Gran Coupe range. Fuel economy figures averaged around 42.8 mpg combined, making it a relatively economical grand tourer. Reliability reports have been generally positive, with the B48 engine proving to be a robust and dependable unit.
Legacy
The BMW 4 Series Gran Coupe (F36) 430i Steptronic has established itself as a desirable used car option. The B48 engine has proven to be relatively reliable, although regular maintenance is crucial. Common issues reported include oil leaks and occasional turbocharger problems, but these are not widespread. The Steptronic transmission is also generally reliable, provided it is serviced according to BMW’s recommendations. Today, these vehicles offer a compelling combination of style, performance, and practicality at a more accessible price point than newer models, making them a popular choice for buyers seeking a premium grand touring experience.
