The BMW 4 Series Coupe (F32) 420d xDrive, produced from 2013 to 2015, represented a key entry point into the premium coupe market for BMW. Positioned as a diesel-powered, all-wheel-drive variant within the F32 generation, it aimed to deliver a blend of performance, efficiency, and all-weather capability. This model occupied the lower-mid range of the 4 Series lineup, slotting below the more powerful 428i, 435i, and the performance-oriented M4. The 420d xDrive was designed to appeal to buyers seeking a sophisticated and economical coupe without sacrificing the BMW driving experience.
Technical Specifications
| Brand | BMW |
| Model | 4 Series |
| Generation | 4 Series Coupe (F32) |
| Type (Engine) | 420d (184 Hp) xDrive |
| Start of production | 2013 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 6.0-5.9 l/100 km (39.2 – 39.9 US mpg) |
| Fuel consumption (extra urban) | 4.1 – 4.2 l/100 km (57.4 – 56 US mpg) |
| Fuel consumption (combined) | 4.8 – 4.9 l/100 km (49 – 48 US mpg) |
| CO2 emissions | 126-129 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.5 sec |
| Acceleration 0 – 62 mph | 7.5 sec |
| Acceleration 0 – 60 mph | 7.1 sec |
| Maximum speed | 236 km/h (146.64 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 8.3 kg/Hp, 120.3 Hp/tonne |
| Weight-to-torque ratio | 4 kg/Nm, 248.4 Nm/tonne |
| Power | 184 Hp @ 4000 rpm |
| Torque | 380 Nm @ 1750-2500 rpm (280.27 lb.-ft. @ 1750-2500 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 | 1530 kg (3373.07 lbs.) |
| Max. weight | 2050 kg (4519.48 lbs.) |
| Max load | 520 kg (1146.4 lbs.) |
| Trunk (boot) space – minimum | 445 l (15.72 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 | 1392 mm (54.8 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) | 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; 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 4 Series Coupe (F32) launched in 2013 as a replacement for the 3 Series Coupe, marking a deliberate move by BMW to create a more distinct identity for its two-door models. The 420d xDrive, powered by the N47D20C engine, was a significant offering in many European markets, where diesel engines held a substantial market share. It provided a compelling alternative to petrol-powered options, emphasizing fuel efficiency and torque. The “xDrive” designation indicates BMW’s intelligent all-wheel-drive system, enhancing traction and stability, particularly in adverse weather conditions. This variant aimed to attract buyers who desired a premium coupe experience with a focus on practicality and lower running costs.
Powertrain & Engine Architecture
At the heart of the 420d xDrive lies the N47D20C, 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 extremely high pressures (1800 bar) for optimized combustion. A twin-scroll turbocharger with variable geometry turbine (VGT) technology further enhances performance and responsiveness. The engine also features intercooling to reduce intake air temperature, increasing power output. The 420d xDrive was typically paired with a six-speed manual transmission, although an eight-speed automatic transmission was also available as an option. The automatic transmission offered smoother shifts and enhanced fuel economy, but at the expense of some driver engagement. The engine’s longitudinal mounting and rear-wheel-drive bias, coupled with the xDrive system, contribute to balanced handling characteristics.
Driving Characteristics
The 420d xDrive, with its 184 horsepower and 280 lb-ft of torque, offered a respectable level of performance. While not as exhilarating as the higher-powered 4 Series variants, it provided ample power for everyday driving and comfortable highway cruising. The xDrive all-wheel-drive system ensured confident traction in various conditions, making it a practical choice for regions with inclement weather. The six-speed manual transmission allowed for precise gear selection, while the optional eight-speed automatic provided seamless shifts. Compared to the 428i or 435i, the 420d xDrive prioritized fuel economy and torque over outright horsepower. The torque curve was relatively flat, providing strong acceleration from low engine speeds. However, the engine could feel somewhat strained at higher RPMs. The steering was precise and well-weighted, typical of BMW, offering a connected feel to the road.
Equipment & Trim Levels
The 420d xDrive came standard with a comprehensive array of features, including automatic climate control, power windows and locks, a multi-function steering wheel, and a BMW Professional radio system. Upholstery typically consisted of cloth or leatherette, with full leather options available as an upgrade. Optional extras included a navigation system, a premium sound system, heated seats, a sunroof, and various driver assistance systems such as parking sensors and lane departure warning. Trim levels varied depending on the market, but generally followed a progression from base models to Sport, Luxury, and M Sport packages. The M Sport package included more aggressive styling cues, sport suspension, and upgraded interior trim.
Chassis & Braking
The F32 4 Series Coupe featured a sophisticated chassis design, incorporating a lightweight aluminum suspension and a rigid body structure. The 420d xDrive utilized independent suspension all around, with coil springs and dampers at the front and a multi-link setup at the rear. The xDrive all-wheel-drive system distributed power between the front and rear axles as needed, optimizing traction and stability. Braking duties were handled by ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control (ESC) were standard features, enhancing safety. The 420d xDrive typically featured slightly smaller brake rotors compared to the higher-powered variants, reflecting its lower weight and performance capabilities.
Market Reception & Comparison
The 420d xDrive was generally well-received by automotive critics, who praised its fuel efficiency, comfortable ride, and refined driving experience. It was often seen as a sensible choice for buyers who prioritized practicality and economy over outright performance. Compared to the 428i, the 420d xDrive offered significantly better fuel economy, but lacked the same level of acceleration. The 420d xDrive also provided a more affordable entry point into the 4 Series range. Reliability was generally good, although some owners reported issues with the diesel particulate filter (DPF) and turbocharger. The xDrive system added to the vehicle’s overall cost but provided a significant advantage in terms of all-weather capability.
Legacy
The BMW 420d xDrive (F32) remains a popular choice in the used car market, particularly in Europe. Its combination of fuel efficiency, practicality, and BMW’s renowned driving dynamics continues to appeal to buyers. The N47D20C engine, while generally reliable, requires regular maintenance, including oil changes and DPF regeneration. The xDrive system is known for its durability, but may require occasional servicing. Overall, the 420d xDrive represents a well-rounded and capable coupe that offers a compelling blend of performance, efficiency, and all-weather capability. Its enduring popularity is a testament to its well-engineered design and its ability to meet the needs of a wide range of drivers.
