The BMW 730Ld xDrive, produced from 2020 to 2022, represents a significant iteration of the G12 generation of the 7 Series, specifically the long-wheelbase (L) variant updated with the Life Cycle Impulse (LCI) facelift. This model combined a potent diesel engine with mild hybrid technology, aimed at delivering both performance and improved fuel efficiency within the luxury sedan segment. Positioned as a mid-range offering in the 7 Series lineup, the 730Ld catered to buyers seeking a balance between refinement, technology, and economical operation, particularly in European markets where diesel engines remained popular. The “xDrive” designation indicates BMW’s all-wheel drive system, enhancing traction and stability.
Technical Specifications
| Brand | BMW |
| Model | 7 Series |
| Generation | 7 Series Long (G12 LCI, facelift 2019) |
| Type (Engine) | 730Ld (286 Hp) Mild Hybrid Steptronic |
| Start of production | 2020 |
| End of production | 2022 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 6.0-6.2 l/100 km (39.2 – 37.9 US mpg) |
| Fuel consumption (extra urban) | 4.1-4.3 l/100 km (57.4 – 54.7 US mpg) |
| Fuel consumption (combined) | 4.8-5.0 l/100 km (49 – 47 US mpg) |
| CO2 emissions | 126-130 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.0 sec |
| Acceleration 0 – 62 mph | 6.0 sec |
| Acceleration 0 – 60 mph | 5.7 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | EURO 6d |
| Weight-to-power ratio | 6.7 kg/Hp |
| Weight-to-torque ratio | 2.9 kg/Nm |
| Gross battery capacity | 0.528 kWh |
| Electric motor power | 11 Hp |
| Power | 286 Hp @ 4000 rpm |
| Torque | 650 Nm @ 1500-2500 rpm (479.42 lb.-ft.) |
| 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 | 7 l (7.4 US qt | 6.16 UK qt) |
| Coolant | 9.9 l (10.46 US qt | 8.71 UK qt) |
| Kerb Weight | 1915 kg (4221.85 lbs.) |
| Max. weight | 2585 kg (5698.95 lbs.) |
| Max load | 670 kg (1477.1 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 | 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 | 12.8 m (41.99 ft.) |
| Drivetrain Architecture | Rear wheel drive. MHEV. |
| Drive wheel | Rear wheel drive |
| Number of gears | 8 |
| Gearbox type | Automatic transmission Steptronic |
| Front suspension | Double wishbone, Air suspension |
| Rear suspension | Independent multi-link suspension, Air suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Tires size | 225/60 R17 99Y |
| Wheel rims size | 7.5J x 17 |
Powertrain & Engine Architecture
The heart of the 730Ld is the BMW B57D30A, a 3.0-liter inline-six diesel engine. This engine benefits from BMW’s extensive experience in diesel technology, featuring a sophisticated common-rail direct injection system and a twin-scroll turbocharger. The turbocharger configuration minimizes turbo lag and provides a broad torque curve. The mild hybrid system, utilizing a 48V starter-generator, adds a small electric motor capable of providing a temporary power boost and enabling smoother start-stop operation. This system also allows for coasting with the engine switched off, further enhancing fuel economy. The engine produces 286 horsepower at 4000 rpm and a substantial 650 Nm (479 lb-ft) of torque between 1500 and 2500 rpm. This torque output, combined with the eight-speed Steptronic automatic transmission, delivers strong acceleration and effortless cruising. The Steptronic transmission is known for its smooth shifts and adaptive learning capabilities, optimizing gear selection based on driving style and conditions.
Driving Characteristics
The 730Ld offers a refined and comfortable driving experience. The abundance of low-end torque from the diesel engine makes it feel surprisingly quick in everyday driving situations. While not as overtly sporty as some of the gasoline-powered 7 Series variants, the 730Ld provides ample power for overtaking and highway cruising. The eight-speed automatic transmission contributes to relaxed long-distance travel, with well-chosen gear ratios that keep the engine within its optimal power band. The mild hybrid system further enhances smoothness, particularly during start-stop transitions. Compared to higher-output 7 Series models, the 730Ld prioritizes efficiency and comfort over outright performance. It’s a more relaxed and less demanding car to drive, making it well-suited for those who value a smooth and quiet ride.
Equipment & Trim Levels
The 730Ld LCI typically came well-equipped as standard, reflecting its position as a luxury vehicle. Standard features included leather upholstery, power-adjustable seats with memory function, a premium sound system, a large infotainment screen with iDrive controller, and a comprehensive suite of safety features. Optional extras included features like massaging seats, a rear-seat entertainment system, upgraded leather trim, and various driver-assistance systems. The LCI facelift brought updated styling cues, including redesigned headlights and taillights, as well as an upgraded infotainment system with improved connectivity features.
Chassis & Braking
The 730Ld utilizes a sophisticated chassis design featuring double-wishbone front suspension and an independent multi-link rear suspension, both incorporating air suspension. The air suspension provides a comfortable ride quality and allows for adjustable ride height. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. Standard safety features include ABS, stability control, and traction control. The xDrive all-wheel drive system distributes power between the front and rear wheels as needed, enhancing traction and stability in all weather conditions.
Market Reception & Comparison
The 730Ld was generally well-received by automotive critics, who praised its fuel efficiency, comfortable ride, and refined interior. It was often seen as a sensible choice for buyers who prioritized economy and comfort over outright performance. Compared to the 740i (gasoline) and 750i (gasoline V8) models, the 730Ld offered significantly better fuel economy, albeit with slightly less power. It also provided a more affordable entry point into the 7 Series range. Against competitors like the Mercedes-Benz S-Class diesel variants and the Audi A8 TDI, the 730Ld held its own in terms of performance, refinement, and technology.
Legacy
The B57 engine family, including the B57D30A found in the 730Ld, has proven to be remarkably reliable. While diesel engines generally require diligent maintenance, these engines are known for their durability and longevity. The mild hybrid system also contributes to improved fuel economy and reduced emissions. On the used car market, the 730Ld LCI represents a compelling value proposition, offering a luxurious and well-equipped sedan at a more affordable price point than newer models. However, potential buyers should be aware of the potential maintenance costs associated with a complex vehicle like the 7 Series, including the air suspension and advanced electronic systems.
