The BMW 730Ld xDrive Steptronic, part of the G12 Long wheelbase (LCI) facelift introduced in 2019, represents a significant offering in the luxury sedan segment. Produced from 2019 through July 2020, this variant catered to markets prioritizing fuel efficiency and refined driving dynamics within the 7 Series lineup. The “L” designation signifies the extended wheelbase, providing increased rear passenger legroom, a key feature for markets like China and other regions where chauffeur-driven luxury is prevalent. This model aimed to bridge the gap between the entry-level 730i and the higher-performance 740i/750i models, offering a compelling blend of power, economy, and standard features.
Technical Specifications
| Brand | BMW |
| Model | 7 Series |
| Generation | 7 Series Long (G12 LCI, facelift 2019) |
| Type (Engine) | 730Ld (265 Hp) xDrive 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) | 6.5-6.7 l/100 km (36.2 – 35.1 US mpg, 43.5 – 42.2 UK mpg, 15.4 – 14.9 km/l) |
| Fuel consumption (extra urban) | 5.1-5.3 l/100 km (46.1 – 44.4 US mpg, 55.4 – 53.3 UK mpg, 19.6 – 18.9 km/l) |
| Fuel consumption (combined) | 5.6-5.8 l/100 km (42 – 40.6 US mpg, 50.4 – 48.7 UK mpg, 17.9 – 17.2 km/l) |
| CO2 emissions | 147-153 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.9 sec |
| Acceleration 0 – 62 mph | 5.9 sec |
| Acceleration 0 – 60 mph | 5.6 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d-TEMP |
| Weight-to-power ratio | 7.6 kg/Hp, 132.2 Hp/tonne |
| Weight-to-torque ratio | 3.2 kg/Nm, 309.2 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 | 2005 kg (4420.27 lbs.) |
| Max. weight | 2625 kg (5787.13 lbs.) |
| Max load | 620 kg (1366.87 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 | 5260 mm (207.09 in.) |
| Width | 1902 mm (74.88 in.) |
| Height | 1479 mm (58.23 in.) |
| Wheelbase | 3210 mm (126.38 in.) |
| Front track | 1617 mm (63.66 in.) |
| Rear (Back) track | 1646 mm (64.8 in.) |
| Ride height (ground clearance) | 135 mm (5.31 in.) |
| Drag coefficient (Cd) | 0.25 |
| Minimum turning circle (turning diameter) | 12.9 m (42.32 ft.) |
| Drive wheel | All wheel drive (4×4) |
| 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 |
Powertrain & Engine Architecture
The 730Ld 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 injection system operating at extremely high pressures (2,500 bar) for optimized combustion. A twin-scroll turbocharger with variable geometry turbine (VGT) technology provides a broad torque curve and minimizes turbo lag. The engine also incorporates an intercooler to further enhance performance. The 8-speed Steptronic automatic transmission is a crucial component, offering smooth and quick shifts. This transmission is known for its adaptability, learning driving styles to optimize gear selection. The ‘xDrive’ all-wheel-drive system distributes power between the front and rear axles, enhancing traction and stability in various conditions.
Driving Characteristics
The 730Ld xDrive delivers a comfortable and composed driving experience. While not as overtly sporty as the gasoline-powered 740i or 750i, the 620 Nm (457 lb-ft) of torque provides ample power for effortless acceleration and overtaking. The 0-60 mph time of around 5.6 seconds is respectable for a large luxury sedan. The eight-speed automatic transmission is well-tuned, providing smooth gear changes and contributing to the car’s relaxed cruising ability. Compared to manual transmission versions (not commonly offered in this configuration), the automatic prioritizes convenience and ease of use. The xDrive system provides surefooted handling, particularly in inclement weather. The long wheelbase contributes to a smooth ride, absorbing bumps and imperfections in the road surface effectively.
Equipment & Trim Levels
The 730Ld typically came well-equipped as standard. Interior features included leather upholstery, power-adjustable front seats with memory function, a premium sound system, and a large infotainment screen with iDrive controller. Standard safety features included a comprehensive suite of driver-assistance systems, such as lane departure warning, forward collision warning, and automatic emergency braking. Optional extras included features like massaging seats, a rear-seat entertainment system, upgraded leather trim, and various customization options through BMW’s Individual program. The LCI facelift brought updated styling cues, including redesigned headlights and taillights, as well as enhancements to the infotainment system.
Chassis & Braking
The 7 Series (G12) utilizes a sophisticated chassis design. The front suspension features a double-wishbone setup, while the rear employs an independent multi-link suspension. This configuration provides a balance of comfort and handling. The 730Ld typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The electronic stability control (ESC) system works in conjunction with the xDrive all-wheel-drive system to maintain stability and control. The suspension was often paired with optional air suspension, which further enhanced ride comfort and allowed for adjustable ride height.
Market Reception & Comparison
The 730Ld was generally well-received by automotive critics, particularly for its fuel efficiency and refined driving experience. It offered a compelling alternative to the gasoline-powered models, especially for drivers who prioritized economy. Compared to the 740i, the 730Ld offered less outright performance but significantly better fuel economy. The 730d (short wheelbase version) was a similar offering, but the ‘L’ model provided the added benefit of increased rear passenger space. Reliability reports suggest that the B57 engine is generally robust, although diesel particulate filter (DPF) issues can occur with infrequent long-distance driving.
Legacy
The BMW 730Ld xDrive Steptronic, while a relatively short-lived model, represents a key part of BMW’s strategy to offer a diverse range of powertrains within the 7 Series lineup. The B57 engine has proven to be a durable and efficient powerplant, and examples of this engine continue to be highly regarded in the used car market. Today, these vehicles offer a blend of luxury, performance, and fuel economy at a more accessible price point than newer models. Maintenance costs can be higher than comparable gasoline-powered vehicles due to the complexity of the diesel engine and emissions control systems, but the long-term reliability of the B57 engine makes it a worthwhile consideration for discerning buyers.
