The BMW 4 Series Gran Coupe (F36) 435i Steptronic, produced from 2014 to 2016, represents a compelling blend of performance, practicality, and luxury within the F36 generation. Positioned as a mid-to-high range offering in the 4 Series Gran Coupe lineup, it catered to buyers seeking a more engaging driving experience than the 428i while offering a slightly more accessible price point than the range-topping 440i (introduced later in the production run). The Gran Coupe body style, a four-door coupe, aimed to combine the sleek aesthetics of a traditional coupe with the usability of a sedan, appealing to a broader audience than the standard 4 Series Coupe.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Gran Coupe (F36) |
| Type (Engine) | 435i (306 Hp) Steptronic |
| Start of production | 2014 |
| End of production | 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban | 10.7 l/100 km (22 US mpg, 26.4 UK mpg, 9.3 km/l) |
| Fuel consumption (economy) – extra urban | 5.6 l/100 km (42 US mpg, 50.4 UK mpg, 17.9 km/l) |
| Fuel consumption (economy) – combined | 7.5 l/100 km (31.4 US mpg, 37.7 UK mpg, 13.3 km/l) |
| CO2 emissions | 174 g/km |
| Fuel Type | Petrol (Gasoline) |
| 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 | 5.2 kg/Hp, 193.1 Hp/tonne |
| Weight-to-torque ratio | 4 kg/Nm, 252.4 Nm/tonne |
| Power | 306 Hp @ 5800-6400 rpm |
| Power per litre | 102.7 Hp/l |
| Torque | 400 Nm @ 1200-5000 rpm (295.02 lb.-ft. @ 1200-5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N55B30A |
| Engine displacement | 2979 cm3 (181.79 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 89.6 mm (3.53 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 | 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 | 1585 kg (3494.33 lbs.) |
| Max. weight | 2145 kg (4728.92 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 | 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 |
| Wheel rims size | 7.5J x 17 |
INTRODUCTION
The BMW 435i Gran Coupe Steptronic, built between 2014 and 2016, is a five-door coupe based on the F36 chassis, which is a derivative of the F30 3 Series. It aimed to offer a more stylish and practical alternative to the traditional 3 Series sedan, while providing a more dynamic driving experience than many of its competitors. The “i” designation signifies a gasoline engine, and the “Steptronic” denotes the inclusion of BMW’s eight-speed automatic transmission. This particular variant occupied a sweet spot in the 4 Series Gran Coupe range, balancing performance with relative affordability and everyday usability.
Powertrain & Engine Architecture
At the heart of the 435i Gran Coupe lies the N55B30A, a 3.0-liter inline-six cylinder engine. This engine is a hallmark of BMW’s engineering prowess, known for its smooth power delivery and responsiveness. The N55 features direct fuel injection, a twin-scroll turbocharger, and variable valve timing (VANOS) and valve lift (Valvetronic) systems. These technologies work in concert to optimize power, efficiency, and emissions. The engine produces 306 horsepower at 5800-6400 rpm and 400 Nm (295 lb-ft) of torque between 1200-5000 rpm. The Steptronic transmission is an eight-speed automatic with manual shift capabilities. It’s designed to provide both smooth, comfortable shifts during normal driving and quick, precise gear changes when in Sport mode. The transmission’s programming is tailored to complement the engine’s characteristics, maximizing acceleration and fuel economy.
Driving Characteristics
The 435i Gran Coupe Steptronic delivers a refined and engaging driving experience. The combination of the potent inline-six engine and the eight-speed automatic results in brisk acceleration – 0 to 60 mph in approximately 4.9 seconds. While not as raw or visceral as a manual transmission, the Steptronic offers quick and seamless gear changes, particularly when utilizing the paddle shifters. The car feels planted and stable, thanks to its well-tuned suspension and rear-wheel-drive layout. Compared to the 428i, the 435i offers a noticeable increase in power and torque, resulting in more confident passing maneuvers and a more spirited overall driving experience. Compared to a manual transmission equipped 435i, the Steptronic sacrifices a small degree of driver involvement, but gains in ease of use and convenience.
Equipment & Trim Levels
The 435i Gran Coupe Steptronic came standard with a generous array of features, including leather upholstery, power-adjustable front seats, a premium sound system, and BMW’s iDrive infotainment system with a central display screen. Common options included a sunroof, navigation system, heated seats, a head-up display, and various driver-assistance systems such as lane departure warning and blind-spot monitoring. Interior trim options ranged from wood veneers to aluminum accents, allowing buyers to personalize the cabin to their preferences. The standard dashboard configuration featured a driver-focused layout with clear and intuitive controls.
Chassis & Braking
The F36 4 Series Gran Coupe utilizes a sophisticated chassis design featuring an independent suspension at all four corners. The front suspension employs coil springs and struts, while the rear utilizes a multi-link setup. This configuration provides a good balance between ride comfort and handling precision. The 435i Gran Coupe 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 features, enhancing safety and control. The steering is a rack-and-pinion system with electric power assistance, offering precise and responsive steering feel.
Market Reception & Comparison
The 435i Gran Coupe was generally well-received by automotive critics. It was praised for its stylish design, engaging driving dynamics, and luxurious interior. The Steptronic transmission was noted for its smoothness and responsiveness. Compared to the 428i, the 435i offered a significant performance upgrade, justifying the higher price tag for many buyers. Fuel economy was respectable for a performance-oriented vehicle, averaging around 31.4 US mpg in combined driving. Reliability was generally good, although some owners reported minor issues with the cooling system and oil leaks.
Legacy
The BMW 435i Gran Coupe Steptronic has established itself as a desirable used car. The N55 engine is known for its durability, although regular maintenance is crucial. The Steptronic transmission is also generally reliable, but fluid changes should be performed according to BMW’s recommended schedule. Today, these cars offer a compelling combination of performance, luxury, and practicality at a relatively affordable price point. They remain a popular choice for enthusiasts seeking a sporty and refined grand tourer.
