The BMW 730d xDrive Steptronic, part of the G11 LCI (Life Cycle Impulse) facelift of the 7 Series, represents a significant offering in the large luxury sedan segment. Introduced in 2019 and continuing through July 2020, this variant combined a potent diesel engine with BMW’s xDrive all-wheel-drive system and an eight-speed Steptronic automatic transmission. Positioned as a mid-range option within the 7 Series lineup, it aimed to deliver a balance of performance, efficiency, and luxury features, appealing to buyers seeking a refined driving experience without the higher price tag of the more powerful models like the 750i.
Technical Specifications
| Brand | BMW |
| Model | 7 Series |
| Generation | 7 Series (G11 LCI, facelift 2019) |
| Type (Engine) | 730d (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) | 6.3-6.5 l/100 km (37.3 – 36.2 US mpg, 44.8 – 43.5 UK mpg, 15.9 – 15.4 km/l) |
| Fuel consumption (extra urban) | 5.0-5.2 l/100 km (47 – 45.2 US mpg, 56.5 – 54.3 UK mpg, 20 – 19.2 km/l) |
| Fuel consumption (combined) | 5.5-5.7 l/100 km (42.8 – 41.3 US mpg, 51.4 – 49.6 UK mpg, 18.2 – 17.5 km/l) |
| CO2 emissions | 143-150 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.8 sec |
| Acceleration 0 – 62 mph | 5.8 sec |
| Acceleration 0 – 60 mph | 5.5 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d-TEMP |
| Weight-to-power ratio | 7.4 kg/Hp, 135.5 Hp/tonne |
| Weight-to-torque ratio | 3.2 kg/Nm, 317.1 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 | 1955 kg (4310.04 lbs.) |
| Max. weight | 2560 kg (5643.83 lbs.) |
| Max load | 605 kg (1333.8 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 | 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) | 12.5 m (41.01 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 |
INTRODUCTION
The G11 generation of the BMW 7 Series, launched in 2015, represented a significant departure in design and technology for the flagship sedan. The 2019 LCI (Life Cycle Impulse) facelift brought updated styling, enhanced technology, and refined powertrain options. The 730d xDrive Steptronic, powered by the B57D30A engine, was a key component of this revised lineup. It offered a compelling blend of luxury, performance, and efficiency, targeting buyers who prioritized a comfortable and capable grand tourer over outright speed. This model was primarily sold in European and Asian markets, where diesel engines remain popular due to their fuel economy and torque characteristics.
Powertrain & Engine Architecture
At the heart of the 730d xDrive Steptronic lies the BMW B57D30A 3.0-liter inline-six diesel engine. This engine is a member of the modular BMW engine family, known for its robust construction and advanced technology. The B57 features a common-rail direct fuel injection system operating at extremely high pressures (2,500 bar) for optimized combustion. It’s equipped with a variable geometry turbocharger and an intercooler to maximize power and efficiency. The engine also incorporates BMW’s BluePower technology, including a diesel particulate filter and NOx catalyst to meet stringent Euro 6d-TEMP emission standards. The engine produces 265 horsepower at 4,000 rpm and a substantial 620 Nm (457 lb-ft) of torque between 2,000 and 2,500 rpm. This torque output is a key characteristic of the engine, providing strong acceleration and effortless cruising. The engine is paired with BMW’s eight-speed Steptronic automatic transmission, which offers smooth and responsive gear changes. The transmission is programmed for both comfort and performance, with the ability to manually shift gears using steering wheel-mounted paddles.
Driving Characteristics
The 730d xDrive Steptronic delivers a refined and comfortable driving experience. The high torque output of the diesel engine provides strong acceleration from low speeds, making it well-suited for city driving and overtaking maneuvers. While not as overtly sporty as the gasoline-powered 7 Series models, the 730d offers ample power for confident highway cruising. The xDrive all-wheel-drive system provides excellent traction in all weather conditions, enhancing stability and control. The eight-speed automatic transmission contributes to a smooth and seamless driving experience, with well-chosen gear ratios that optimize both performance and fuel economy. Compared to the higher-output 740i or 750i models, the 730d prioritizes efficiency and comfort over outright speed. It also offers a more relaxed driving experience compared to the more performance-focused M760i.
Equipment & Trim Levels
The 730d xDrive Steptronic came standard with a comprehensive array of luxury features. These included leather upholstery, power-adjustable front seats with memory function, a premium sound system, a large infotainment screen with iDrive controller, and a suite of advanced 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, a panoramic sunroof, and upgraded leather trim. The interior design was characterized by high-quality materials, meticulous craftsmanship, and a focus on creating a comfortable and luxurious environment.
Chassis & Braking
The 7 Series G11 LCI features a sophisticated chassis design aimed at providing both comfort and handling. The front suspension utilizes a double-wishbone setup, while the rear suspension employs an independent multi-link design. This configuration helps to isolate the cabin from road imperfections while maintaining precise control. The 730d xDrive Steptronic is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The braking system is enhanced by ABS (Anti-lock Braking System), electronic brake-force distribution, and brake assist. The xDrive all-wheel-drive system contributes to enhanced stability and control during braking, particularly on slippery surfaces.
Market Reception & Comparison
The 730d xDrive Steptronic was generally well-received by automotive critics. It was praised for its refined driving experience, comfortable interior, and impressive fuel economy. Critics noted that the diesel engine provided ample power for most driving situations, while the xDrive system offered excellent all-weather capability. Compared to the gasoline-powered 7 Series models, the 730d offered a more affordable entry point into the flagship sedan range. It also provided superior fuel economy, making it a more practical choice for drivers who cover long distances. However, some critics noted that the diesel engine lacked the responsiveness and refinement of the gasoline engines.
Legacy
The BMW B57 engine family, including the B57D30A found in the 730d, has proven to be remarkably reliable. These engines are known for their durability and longevity, provided they are properly maintained. The G11 generation 7 Series, as a whole, has established a reputation for build quality and technological innovation. On the used car market, the 730d xDrive Steptronic represents a compelling value proposition, offering a luxurious and capable grand tourer at a more accessible price point than its gasoline-powered counterparts. Its combination of performance, efficiency, and comfort continues to appeal to buyers seeking a refined and sophisticated driving experience.
