The BMW 4 Series Gran Coupe (F36) 420d xDrive, produced from 2014 to 2015, represents a compelling blend of practicality and BMW’s renowned driving dynamics. Positioned as a mid-range offering within the F36 Gran Coupe lineup, it aimed to attract buyers seeking a more efficient and accessible entry point into the 4 Series family, without sacrificing the brand’s core values. This variant combined a 2.0-liter turbocharged diesel engine with BMW’s xDrive all-wheel-drive system, offering a balance of performance, fuel economy, and all-weather capability. It served as an alternative to the more powerful 428i and 435i models, and the diesel-focused 420d offered a different character than its gasoline counterparts.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Gran Coupe (F36) |
| Type (Engine) | 420d (184 Hp) xDrive |
| Start of production | 2014 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 6.1 l/100 km (38.6 US mpg, 46.3 UK mpg, 16.4 km/l) |
| Fuel consumption (extra urban) | 4.2 l/100 km (56 US mpg, 67.3 UK mpg, 23.8 km/l) |
| Fuel consumption (combined) | 4.9 l/100 km (48 US mpg, 57.6 UK mpg, 20.4 km/l) |
| CO2 emissions | 129 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.7 sec |
| Acceleration 0 – 62 mph | 7.7 sec |
| Acceleration 0 – 60 mph | 7.3 sec |
| Maximum speed | 234 km/h (145.4 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 8.6 kg/Hp, 116.1 Hp/tonne |
| Weight-to-torque ratio | 4.2 kg/Nm, 239.7 Nm/tonne |
| Power | 184 Hp @ 4000 rpm |
| Power per litre | 92.2 Hp/l |
| Torque | 380 Nm @ 1750-2750 rpm (280.27 lb.-ft. @ 1750-2750 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N47D20C |
| 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 | 5.2 l (5.49 US qt | 4.58 UK qt) |
| Coolant | 7 l (7.4 US qt | 6.16 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 | 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 (turning diameter) | 11.8 m (38.71 ft.) |
| Drive wheel | All wheel drive (4×4) |
| 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 94W |
| Wheel rims size | 7.5J x 17 |
INTRODUCTION
The BMW 420d xDrive Gran Coupe, built on the F36 chassis, was introduced as part of BMW’s expansion of the 4 Series range. The F36 Gran Coupe, launched in 2014, aimed to bridge the gap between the traditional 3 Series sedan and the 4 Series Coupe and Convertible, offering a more practical, five-door body style without compromising on style or driving pleasure. The 420d xDrive variant specifically targeted buyers looking for a fuel-efficient and capable all-weather vehicle, leveraging BMW’s expertise in diesel technology and all-wheel-drive systems. It occupied the entry-level position in the 4 Series Gran Coupe range, offering a more accessible price point than the higher-powered gasoline models.
Powertrain & Engine Architecture
At the heart of the 420d xDrive lies the N47D20C engine, a 2.0-liter inline-four cylinder diesel engine. This engine is a member of BMW’s highly regarded N47 family, known for its efficiency and refinement. The N47D20C utilizes a second-generation common rail direct injection system, delivering fuel at pressures up to 1800 bar for optimized combustion. A twin-scroll turbocharger with variable geometry turbine (VGT) technology provides a broad torque curve and responsive performance. The engine also features an intercooler to further enhance efficiency. The 420d xDrive was typically paired with a six-speed manual transmission, although an optional eight-speed automatic transmission was also available. The xDrive all-wheel-drive system employs a multi-plate clutch to distribute torque between the front and rear axles, providing enhanced traction and stability in various driving conditions.
Driving Characteristics
The 420d xDrive Gran Coupe delivers a composed and refined driving experience. While not as overtly sporty as the higher-powered 4 Series variants, it offers ample performance for everyday driving and long-distance cruising. The 380 Nm (280 lb-ft) of torque, available from 1750-2750 rpm, provides strong acceleration in most situations. The six-speed manual transmission offers precise shifts, while the optional eight-speed automatic provides smooth and seamless gear changes. The xDrive system enhances grip and stability, particularly on slippery surfaces. Compared to the 428i, the 420d xDrive offers less outright power, but its superior fuel economy and lower-end torque make it a more practical choice for many drivers. The manual transmission version feels more engaging, while the automatic prioritizes comfort and convenience.
Equipment & Trim Levels
The 420d xDrive Gran Coupe came standard with a comprehensive list of features, including automatic climate control, power windows and locks, a multi-function steering wheel, and BMW’s iDrive infotainment system with a 6.5-inch display screen. Upholstery was typically cloth, but leather options were available. Optional extras included a larger iDrive screen, navigation system, premium sound system, heated seats, and a sunroof. The Gran Coupe’s five-door body style provides easier access to the rear seats compared to the two-door Coupe. Interior trim options ranged from basic matte finishes to more luxurious wood or aluminum accents.
Chassis & Braking
The F36 Gran Coupe utilizes a sophisticated chassis design, featuring independent suspension at all four corners. The front suspension consists of MacPherson struts with a single tube shock absorber, while the rear suspension employs a multi-link setup. This configuration provides a good balance of ride comfort and handling precision. The 420d xDrive is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS), electronic stability control (ESC), and traction control are standard safety features. The steering system is a rack-and-pinion type with electric power assistance, offering precise and responsive steering feel.
Market Reception & Comparison
The 420d xDrive Gran Coupe was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and practical five-door body style. However, some reviewers noted that the 2.0-liter diesel engine lacked the refinement and performance of the larger gasoline engines. Compared to the 428i, the 420d xDrive offered significantly better fuel economy, but less overall performance. Against competitors like the Audi A5 Sportback and the Volkswagen Passat CC, the 420d xDrive stood out with its sporty handling and premium interior.
Legacy
The N47 engine family, including the N47D20C found in the 420d xDrive, has proven to be generally reliable, although some early models experienced issues with timing chain tensioners. Regular maintenance, including oil changes and timing chain inspections, is crucial for long-term reliability. Today, used examples of the 420d xDrive Gran Coupe represent a relatively affordable entry point into BMW ownership. They continue to appeal to buyers seeking a stylish, practical, and fuel-efficient vehicle. The combination of BMW’s engineering prowess, the efficient diesel engine, and the all-weather capability of xDrive ensures that these cars remain a viable option in the used car market.
