The BMW 4 Series Gran Coupe (F36) 420d xDrive Steptronic, produced from 2015 to 2016, represents a compelling blend of practicality and performance within the 4 Series lineup. Positioned as a mid-range offering, this variant combined a 2.0-liter turbocharged diesel engine with BMW’s xDrive all-wheel-drive system and an eight-speed Steptronic automatic transmission. It aimed to deliver a refined driving experience with improved fuel efficiency and all-weather capability, appealing to buyers seeking a versatile and sophisticated grand tourer. The F36 Gran Coupe, launched as a four-door coupe, expanded the 4 Series range, offering a more accessible body style than the traditional two-door coupe or convertible.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Gran Coupe (F36) |
| Type (Engine) | 420d (190 Hp) xDrive Steptronic |
| Start of production | 2015 |
| End of production | 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 5.2-5.6 l/100 km (45.2 – 42 US mpg, 54.3 – 50.4 UK mpg, 19.2 – 17.9 km/l) |
| Fuel consumption (extra urban) | 4.1-4.3 l/100 km (57.4 – 54.7 US mpg, 68.9 – 65.7 UK mpg, 24.4 – 23.3 km/l) |
| Fuel consumption (combined) | 4.5-4.8 l/100 km (52.3 – 49 US mpg, 62.8 – 58.9 UK mpg, 22.2 – 20.8 km/l) |
| CO2 emissions | 118-126 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.4 sec |
| Acceleration 0 – 62 mph | 7.4 sec |
| Acceleration 0 – 60 mph | 7 sec (Calculated) |
| Maximum speed | 230 km/h (142.92 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 8.5 kg/Hp, 117.6 Hp/tonne |
| Weight-to-torque ratio | 4 kg/Nm, 247.7 Nm/tonne |
| Power | 190 Hp @ 4000 rpm |
| Power per litre | 95.2 Hp/l |
| Torque | 400 Nm @ 1750-2500 rpm (295.02 lb.-ft. @ 1750-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B47D20A |
| Engine displacement | 1995 cm3 (121.74 cu. in.) |
| Number of cylinders | 4 |
| 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 | 5 l (5.28 US qt | 4.4 UK qt) |
| Coolant | 7 l (7.4 US qt | 6.16 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 | 57 l (15.06 US gal | 12.54 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 | 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 | 1404 mm (55.28 in.) |
| Wheelbase | 2810 mm (110.63 in.) |
| Front track | 1544 mm (60.79 in.) |
| Rear (Back) track | 1590 mm (62.6 in.) |
| Ride height (ground clearance) | 145 mm (5.71 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle | 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 94V; 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 BMW 420d xDrive Gran Coupe, built between 2015 and 2016, is part of the F36 generation of the 4 Series. This model aimed to bridge the gap between the sporty 4 Series Coupe and the more practical 3 Series sedan. It offered a unique proposition: the sleek styling of a coupe combined with the accessibility of four doors and a usable trunk. The 420d variant, powered by a 2.0-liter diesel engine, was designed to provide a balance of performance and fuel economy, making it a popular choice in European markets where diesel engines were prevalent. The xDrive all-wheel-drive system further enhanced its appeal in regions with inclement weather.
Powertrain & Engine Architecture
At the heart of the 420d xDrive Gran Coupe lies the BMW B47D20A 2.0-liter inline-four diesel engine. This engine is a member of BMW’s modular engine family, known for its efficiency and refinement. It utilizes a sophisticated common-rail direct fuel injection system operating at extremely high pressures (2,000 bar) to ensure precise fuel delivery and optimal combustion. The engine is turbocharged by a single twin-scroll turbocharger with variable geometry turbine (VGT) technology, which improves responsiveness and reduces turbo lag. The B47 engine also features a multi-stage fuel filtration system to protect the sensitive fuel injectors. The eight-speed Steptronic automatic transmission is a key component of this powertrain. It offers smooth and quick gear changes, contributing to both performance and fuel efficiency. The transmission features adaptive shift programs that adjust to the driver’s style and road conditions. xDrive, BMW’s intelligent all-wheel-drive system, distributes power between the front and rear axles as needed, providing enhanced traction and stability, particularly in slippery conditions.
Driving Characteristics
The 420d xDrive Gran Coupe delivers a composed and refined driving experience. While not overtly sporty, the 190 horsepower and 400 Nm (295 lb-ft) of torque provide ample power for everyday driving and comfortable highway cruising. Acceleration from 0 to 60 mph takes around 7 seconds. The eight-speed automatic transmission is well-matched to the engine, providing smooth upshifts and downshifts. The xDrive system contributes to confident handling in all weather conditions. Compared to the more powerful 420i (petrol) or 430d variants, the 420d offers a more relaxed and fuel-efficient driving experience. The gear ratios are tuned for efficiency, prioritizing fuel economy over outright acceleration. The steering is precise and well-weighted, providing good feedback to the driver.
Equipment & Trim Levels
The 420d xDrive Gran Coupe came standard with a comprehensive list of features, including automatic climate control, power-adjustable front seats, a BMW iDrive infotainment system with a 6.5-inch display screen, and a leather-wrapped steering wheel. Interior upholstery typically consisted of cloth or leatherette, with full leather options available as an upgrade. Optional extras included a larger iDrive display screen, navigation system, Harman Kardon premium sound system, heated front seats, and a panoramic sunroof. Safety features such as ABS, stability control, and multiple airbags were standard. Trim levels varied depending on the market, but generally included Sport Line, Luxury Line, and M Sport packages, each offering unique styling and equipment enhancements.
Chassis & Braking
The F36 Gran Coupe utilizes a sophisticated chassis design featuring independent suspension all around. The front suspension consists of coil springs and struts, while the rear suspension employs a multi-link setup. This configuration provides a good balance of ride comfort and handling precision. The 420d xDrive Gran Coupe typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. ABS (Anti-lock Braking System) and stability control were standard safety features. The xDrive all-wheel-drive system adds to the vehicle’s stability, particularly during braking on slippery surfaces.
Market Reception & Comparison
The 420d xDrive Gran Coupe was generally well-received by automotive critics. It was praised for its stylish design, comfortable ride, and fuel efficiency. However, some reviewers noted that the 2.0-liter diesel engine lacked the outright performance of the larger 3.0-liter engines available in other 4 Series models. Compared to the 420i, the 420d offered significantly better fuel economy, making it a more practical choice for drivers covering long distances. The 430d, with its more powerful engine, provided a more engaging driving experience but came at a higher price point. The 420d xDrive Gran Coupe represented a sweet spot in the lineup for buyers seeking a balance of performance, efficiency, and practicality.
Legacy
The B47 engine, found in the 420d xDrive Gran Coupe, has proven to be a relatively reliable powertrain. While some early examples experienced issues with timing chain tensioners, these were addressed with updated parts. The eight-speed Steptronic transmission is also known for its durability. Today, the F36 420d xDrive Gran Coupe represents a good value on the used car market. Its combination of style, practicality, and fuel efficiency continues to appeal to buyers seeking a refined and versatile grand tourer. Regular maintenance, including oil changes and adherence to BMW’s recommended service intervals, is crucial for ensuring the long-term reliability of this vehicle.
