The BMW 5 Series G30 520d, produced from November 2019 through 2020, represents a key entry point into the seventh generation of BMW’s flagship executive sedan. This variant, equipped with a 2.0-liter turbocharged diesel engine and a mild-hybrid system paired with an 8-speed Steptronic automatic transmission, was primarily aimed at the European market, where diesel engines remained highly popular due to their fuel efficiency and torque characteristics. The 520d served as a balance between performance, economy, and affordability within the broader 5 Series lineup, positioned below the more powerful 530d and 540i models.
Technical Specifications
| Brand | BMW |
| Model | 5 Series |
| Generation | 5 Series Sedan (G30) |
| Type (Engine) | 520d (190 Hp) Mild Hybrid Steptronic |
| Start of production | November, 2019 |
| End of production | 2020 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 4.6-4.8 l/100 km (51.1 – 49 US mpg) |
| Fuel consumption (extra urban) | 3.8-4.0 l/100 km (61.9 – 58.8 US mpg) |
| Fuel consumption (combined) | 4.1-4.3 l/100 km (57.4 – 54.7 US mpg) |
| CO2 emissions | 108-112 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.2 sec |
| Acceleration 0 – 62 mph | 7.2 sec |
| Acceleration 0 – 60 mph | 6.8 sec |
| Maximum speed | 235 km/h (146.02 mph) |
| Emission standard | Euro 6d-TEMP |
| Weight-to-power ratio | 8.7 kg/Hp |
| Weight-to-torque ratio | 4.1 kg/Nm |
| Power | 190 Hp @ 4000 rpm |
| Torque | 400 Nm @ 1750-2500 rpm (295.02 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B47D20B |
| 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 | 8.8 l (9.3 US qt | 7.74 UK qt) |
| Kerb Weight | 1650 kg (3637.63 lbs.) |
| Max. weight | 2320 kg (5114.72 lbs.) |
| Max load | 670 kg (1477.1 lbs.) |
| Trunk (boot) space – minimum | 530 l (18.72 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 90 kg (198.42 lbs.) |
| Length | 4936 mm (194.33 in.) |
| Width | 1868 mm (73.54 in.) |
| Height | 1479 mm (58.23 in.) |
| Wheelbase | 2975 mm (117.13 in.) |
| Front track | 1605 mm (63.19 in.) |
| Rear (Back) track | 1630 mm (64.17 in.) |
| Ride height (ground clearance) | 144 mm (5.67 in.) |
| Drag coefficient (Cd) | 0.23 |
| Minimum turning circle | 12 m (39.37 ft.) |
| Drivetrain Architecture | Rear wheel drive, MHEV |
| Number of gears | 8 |
| Gearbox type | Automatic Steptronic |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
Powertrain & Engine Architecture
The heart of the 520d is BMW’s B47D20B, a 2.0-liter inline-four cylinder diesel engine. This engine is a member of BMW’s modular engine family, known for its efficiency and refinement. The B47 utilizes a second-generation common rail direct injection system operating at pressures up to 2,500 bar, ensuring precise fuel delivery and optimized combustion. A single twin-scroll turbocharger with variable geometry turbine (VGT) technology provides a broad torque curve and minimizes turbo lag. The mild-hybrid system, a 48V setup, incorporates a starter-generator that assists the engine during acceleration, allows for extended coasting with the engine off, and enables smoother start-stop operation. The 8-speed Steptronic automatic transmission is a torque-converter type, offering smooth and quick shifts. It’s programmed for efficiency in normal driving modes and provides responsive downshifts in Sport mode.
Driving Characteristics
The 520d Automatic delivers a comfortable and refined driving experience. While not overtly sporty, the 190 horsepower and 400 Nm (295 lb-ft) of torque provide adequate performance for everyday driving and highway cruising. Acceleration from 0-60 mph takes around 6.8 seconds. The automatic transmission is well-tuned, offering seamless gear changes and contributing to the car’s overall smoothness. Compared to the more powerful 530d, the 520d feels less urgent in acceleration, but its lower weight and efficient engine contribute to better fuel economy. The gear ratios are optimized for both fuel efficiency and responsiveness, with taller gears for highway cruising and shorter gears for quicker acceleration. The mild-hybrid system is largely transparent to the driver, providing a subtle boost during acceleration and improving overall efficiency.
Equipment & Trim Levels
The 520d typically came standard with features such as BMW’s iDrive infotainment system with a 10.25-inch touchscreen display, automatic climate control, power-adjustable front seats, and a suite of safety features including lane departure warning and collision warning. Interior upholstery was typically a combination of cloth and leatherette, with optional upgrades to full leather available. Common optional extras included a head-up display, a premium sound system, adaptive cruise control, and parking assistance systems. Trim levels varied slightly depending on the market, but generally followed a progression from base models to higher-spec ‘Luxury’ or ‘M Sport’ trims, offering more luxurious appointments and sportier styling cues.
Chassis & Braking
The G30 5 Series utilizes a sophisticated chassis design featuring a double-wishbone front suspension and an independent multi-link rear suspension. This setup provides a comfortable ride while maintaining good handling characteristics. The 520d typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. ABS (Anti-lock Braking System) and electronic stability control are standard features. The suspension tuning is geared towards comfort, with a focus on absorbing bumps and providing a smooth ride. Optional adaptive suspension systems were available, allowing drivers to adjust the damping characteristics to suit their preferences.
Market Reception & Comparison
The 520d was generally well-received by automotive critics as a sensible and efficient option within the 5 Series range. It was praised for its fuel economy, comfortable ride, and refined interior. However, some critics noted that the engine lacked the outright performance of its larger siblings. Compared to the 530d, the 520d offered significantly better fuel economy but at the expense of performance. Against competitors such as the Mercedes-Benz E220d and Audi A6 2.0 TDI, the 520d held its own in terms of refinement, technology, and driving dynamics.
Legacy
The B47 engine, found in the 520d, has proven to be a relatively reliable powertrain, although early versions were subject to some issues with timing chain wear. Proper maintenance, including regular oil changes and adherence to BMW’s service schedule, is crucial for long-term reliability. On the used car market, the 520d represents a good value proposition, offering a luxurious and well-equipped executive sedan at a more affordable price point than its more powerful counterparts. Its fuel efficiency and relatively low running costs make it an attractive option for drivers who prioritize practicality and economy.
