The BMW 730d Steptronic, part of the G11 LCI (Life Cycle Impulse) facelift generation of the 7 Series, was produced from 2019 to July 2020. This variant occupied a key position in the 7 Series lineup as a more efficient and accessible entry point into the flagship luxury sedan range, offering a balance between performance and fuel economy. The G11 LCI represented a significant mid-cycle refresh for the sixth-generation 7 Series, introducing styling updates, enhanced technology, and refined powertrain options. The 730d specifically targeted buyers seeking the prestige and comfort of a 7 Series without the higher costs associated with the more powerful 740i or 750i models.
Technical Specifications
| Brand | BMW |
| Model | 7 Series |
| Generation | 7 Series (G11 LCI, facelift 2019) |
| Type (Engine) | 730d (265 Hp) Steptronic |
| Start of production | 2019 |
| End of production | July, 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 6.2-6.5 l/100 km (37.9 – 36.2 US mpg, 45.6 – 43.5 UK mpg, 16.1 – 15.4 km/l) |
| Fuel consumption (extra urban) | 4.6-5.0 l/100 km (51.1 – 47 US mpg, 61.4 – 56.5 UK mpg, 21.7 – 20 km/l) |
| Fuel consumption (combined) | 5.3-5.5 l/100 km (44.4 – 42.8 US mpg, 53.3 – 51.4 UK mpg, 18.9 – 18.2 km/l) |
| CO2 emissions | 138-144 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.1 sec |
| Acceleration 0 – 62 mph | 6.1 sec |
| Acceleration 0 – 60 mph | 5.8 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d-TEMP |
| Weight-to-power ratio | 7.2 kg/Hp, 139.5 Hp/tonne |
| Weight-to-torque ratio | 3.1 kg/Nm, 326.3 Nm/tonne |
| Power | 265 Hp @ 4000 rpm |
| Torque | 620 Nm @ 2000-2500 rpm (457.29 lb.-ft. @ 2000-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B57D30A |
| Engine displacement | 2993 cm3 (182.64 cu. in.) |
| Number of cylinders | 6 |
| 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 | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 11.9 l (12.57 US qt | 10.47 UK qt) |
| Kerb Weight | 1900 kg (4188.78 lbs.) |
| Max. weight | 2510 kg (5533.6 lbs.) |
| Max load | 610 kg (1344.82 lbs.) |
| Trunk (boot) space – minimum | 515 l (18.19 cu. ft.) |
| Fuel tank capacity | 78 l (20.61 US gal | 17.16 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 100 kg (220.46 lbs.) |
| Length | 5120 mm (201.57 in.) |
| Width | 1902 mm (74.88 in.) |
| Height | 1467 mm (57.76 in.) |
| Wheelbase | 3070 mm (120.87 in.) |
| Front track | 1618 mm (63.7 in.) |
| Rear (Back) track | 1646 mm (64.8 in.) |
| Ride height (ground clearance) | 135 mm (5.31 in.) |
| Drag coefficient (Cd) | 0.24 |
| Minimum turning circle (turning diameter) | 12.3 m (40.35 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 | Double wishbone |
| 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 | 225/60 R17 99Y |
| Wheel rims size | 7.5J x 17 |
Powertrain & Engine Architecture
The 730d is powered by the BMW B57D30A, a 3.0-liter inline-six diesel engine. This engine is a member of the modular B-series engine family, known for its efficiency and refinement. The B57 features a common-rail direct fuel injection system operating at extremely high pressures (2,500 bar) for optimized combustion. It utilizes a single twin-scroll turbocharger with variable geometry turbine (VGT) technology, along with intercooling, to deliver strong torque across a broad rev range. The engine also incorporates BMW’s BluePower technology, including a diesel particulate filter and NOx catalyst to meet stringent emissions standards (Euro 6d-TEMP). The Steptronic 8-speed automatic transmission is standard, offering smooth and responsive gear changes. This transmission is known for its efficiency and ability to adapt to driving conditions.
Driving Characteristics
The 730d Steptronic provides a comfortable and refined driving experience. While not as overtly sporty as the gasoline-powered 740i or 750i, the 730d delivers ample power and torque for effortless cruising and confident overtaking. The 620 Nm (457 lb-ft) of torque available from 2000-2500 rpm provides strong acceleration, and the 8-speed automatic transmission is well-matched to the engine’s characteristics. Compared to manual transmission versions (which were not widely available in this configuration), the Steptronic offers greater convenience and smoothness, particularly in urban driving. The gear ratios are tuned for fuel efficiency and relaxed cruising, rather than outright performance.
Equipment & Trim Levels
The 730d typically came well-equipped, reflecting its position as a luxury sedan. Standard features included leather upholstery, power-adjustable front seats with memory function, a premium sound system, a large infotainment screen with iDrive controller, navigation, and a comprehensive suite of safety features like automatic emergency braking, lane departure warning, and adaptive cruise control. Optional extras included features like massaging seats, a rear-seat entertainment system, upgraded leather trim, and various driver-assistance packages. Trim levels varied by market, but generally offered options for enhanced interior finishes and exterior styling elements.
Chassis & Braking
The G11 7 Series features a lightweight chassis construction utilizing carbon fiber reinforced plastic (CFRP) in the passenger cell, contributing to its rigidity and reducing weight. The 730d utilizes a double-wishbone front suspension and an independent multi-link rear suspension, providing a comfortable and controlled ride. Brakes are ventilated discs all around, offering strong stopping power. The electronic stability control (DSC) system is standard, along with ABS and traction control. The suspension tuning is geared towards comfort, prioritizing a smooth ride over aggressive handling.
Market Reception & Comparison
The 730d was generally well-received by automotive critics as a sensible and efficient option within the 7 Series range. It was praised for its comfortable ride, refined engine, and fuel economy. Compared to the 740i, the 730d offered a lower price point and better fuel efficiency, making it a more practical choice for many buyers. However, it lacked the outright performance of the 740i and 750i. Compared to other diesel-powered luxury sedans, the 730d was considered competitive in terms of performance, refinement, and technology.
Legacy
The B57 engine family, including the B57D30A found in the 730d, has proven to be remarkably reliable. While diesel engines can be susceptible to issues with the diesel particulate filter (DPF) and emissions control systems, the B57 has generally demonstrated good durability. On the used car market, the 730d represents a good value proposition, offering a luxurious and well-equipped sedan at a more affordable price than its higher-powered siblings. Maintenance costs are generally reasonable, although preventative maintenance, particularly related to the DPF, is crucial for long-term reliability.
