The BMW 5 Series M550i xDrive, produced from July 2019 through 2020, represents a performance-oriented variant within the G30 generation of the 5 Series sedan. Positioned as a step below the full-fledged M5, the M550i aimed to deliver a significant portion of the M5’s performance with a slightly more refined and comfortable driving experience. It served as a flagship trim for those desiring potent acceleration and luxury features without the outright track focus of the M5. This model was primarily marketed in North America, Europe, and Asia, appealing to buyers seeking a high-performance executive sedan.
Technical Specifications
| Brand | BMW |
| Model | 5 Series |
| Generation | 5 Series Sedan (G30) |
| Type | M550i (530 Hp) xDrive Steptronic |
| Start of production | July, 2019 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 13.5-13.9 l/100 km (17.4 – 16.9 US mpg, 20.9 – 20.3 UK mpg, 7.4 – 7.2 km/l) |
| Fuel consumption (extra urban) | 7.6-7.8 l/100 km (30.9 – 30.2 US mpg, 37.2 – 36.2 UK mpg, 13.2 – 12.8 km/l) |
| Fuel consumption (combined) | 9.9-10 l/100 km (23.8 – 23.5 US mpg, 28.5 – 28.2 UK mpg, 10.1 – 10 km/l) |
| CO2 emissions | 225-227 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 3.8 sec |
| Acceleration 0 – 62 mph | 3.8 sec |
| Acceleration 0 – 60 mph | 3.6 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d-TEMP |
| Weight-to-power ratio | 3.5 kg/Hp, 283.4 Hp/tonne |
| Weight-to-torque ratio | 2.5 kg/Nm, 401.1 Nm/tonne |
| Power | 530 Hp @ 5500-6000 rpm |
| Power per litre | 120.6 Hp/l |
| Torque | 750 Nm @ 1800-4600 rpm (553.17 lb.-ft. @ 1800-4600 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N63B44D |
| Engine displacement | 4395 cm3 (268.2 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 89 mm (3.5 in.) |
| Piston Stroke | 88.3 mm (3.48 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Engine oil capacity | 10.5 l (11.1 US qt | 9.24 UK qt) |
| Coolant | 8.8 l (9.3 US qt | 7.74 UK qt) |
| Kerb Weight | 1870 kg (4122.64 lbs.) |
| Max. weight | 2480 kg (5467.46 lbs.) |
| Max load | 610 kg (1344.82 lbs.) |
| Trunk (boot) space – maximum | 530 l (18.72 cu. ft.) |
| Fuel tank capacity | 68 l (17.96 US gal | 14.96 UK gal) |
| Max. roof load | 90 kg (198.42 lbs.) |
| Permitted trailer load with brakes (8%) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load with brakes (12%) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4962 mm (195.35 in.) |
| Width | 1868 mm (73.54 in.) |
| Width including mirrors | 2126 mm (83.7 in.) |
| Height | 1467 mm (57.76 in.) |
| Wheelbase | 2975 mm (117.13 in.) |
| Drag coefficient (Cd) | 0.28 |
| Minimum turning circle | 12.4 m (40.68 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| 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 | Front wheel tires: 245/40 R19Y XLRear wheel tires: 275/35 R19 100Y XL |
| Wheel rims size | Front wheel rims: 8J x 19Rear wheel rims: 9J x 19 |
INTRODUCTION
The BMW M550i xDrive (G30) debuted in July 2019 and continued through the 2020 model year, representing a compelling blend of performance and luxury within the 5 Series lineup. Built on the G30 platform, which introduced significant advancements in chassis technology and lightweight construction, the M550i aimed to bridge the gap between the standard 5 Series models and the high-performance M5. It offered a substantial power upgrade over the 540i, while maintaining a more comfortable ride and a lower price point than the M5. The xDrive all-wheel-drive system was standard, providing enhanced traction and stability in various driving conditions.
Powertrain & Engine Architecture
At the heart of the M550i lies the N63B44D 4.4-liter twin-turbocharged V8 engine. This engine is a direct descendant of BMW’s long-standing V8 tradition, but incorporates significant advancements in fuel injection, turbocharging, and thermal management. The N63B44D utilizes direct injection, delivering fuel directly into the combustion chambers for improved efficiency and power. The twin-turbocharger setup employs two scroll-type turbochargers, minimizing turbo lag and providing a broad torque curve. The engine produces 530 horsepower at 5,500-6,000 rpm and a substantial 750 Nm (553 lb-ft) of torque between 1,800 and 4,600 rpm.
The engine is paired with BMW’s 8-speed Steptronic automatic transmission. This transmission is known for its smooth and quick shifts, and it features a wide range of gear ratios optimized for both performance and fuel efficiency. The Steptronic transmission also includes paddle shifters, allowing the driver to manually select gears when desired. The xDrive all-wheel-drive system intelligently distributes power between the front and rear axles, maximizing traction and stability. The system typically operates in a rear-wheel-drive bias, but can seamlessly shift power to the front wheels when needed.
Driving Characteristics
The M550i xDrive delivers exhilarating performance. The combination of the powerful V8 engine and the responsive 8-speed automatic transmission results in a 0-60 mph time of approximately 3.6 seconds. The xDrive all-wheel-drive system provides exceptional grip, particularly in inclement weather or during spirited driving. The suspension is tuned to provide a balance between comfort and handling, offering a more compliant ride than the M5 while still delivering precise steering and minimal body roll. The gear ratios are optimized for both acceleration and cruising, providing strong pull in any gear. While not as overtly aggressive as the M5, the M550i offers a thrilling driving experience that is well-suited for both daily commuting and weekend excursions.
Equipment & Trim Levels
The M550i xDrive came standard with a comprehensive list of features, including premium leather upholstery, power-adjustable front seats with memory function, a panoramic sunroof, and a high-end sound system. Standard technology included BMW’s iDrive infotainment system with a large touchscreen display, navigation, Apple CarPlay compatibility, and a suite of advanced driver-assistance systems such as lane departure warning, forward collision warning, and automatic emergency braking. Optional extras included massaging front seats, a rear-seat entertainment system, and a Bowers & Wilkins Diamond Surround Sound System. Exterior styling cues included unique aerodynamic elements, such as a rear spoiler and aggressive front fascia, differentiating it from other 5 Series models.
Chassis & Braking
The G30 5 Series chassis utilizes a combination of high-strength steel and aluminum to minimize weight and maximize rigidity. The M550i features a specifically tuned suspension with adaptive dampers, allowing the driver to adjust the ride quality to their preference. The front suspension utilizes a double-wishbone design, while the rear suspension employs a multi-link setup. Braking duties are handled by large, ventilated discs on all four wheels, providing ample stopping power. The M550i also features BMW’s Dynamic Stability Control (DSC) system, which helps to maintain stability during cornering and emergency maneuvers.
Market Reception & Comparison
The M550i xDrive was generally well-received by automotive critics, who praised its potent performance, luxurious interior, and comfortable ride. It was often positioned as a sweet spot in the 5 Series lineup, offering a significant performance upgrade over the 540i without the higher price tag and more aggressive character of the M5. Compared to the 540i, the M550i offered substantially more power and torque, resulting in significantly faster acceleration. Compared to the M5, the M550i provided a more comfortable and refined driving experience, albeit with slightly less outright performance. Fuel economy, while not a primary focus, was respectable for a vehicle of this performance caliber, averaging around 23.8-23.5 US mpg in combined driving.
Legacy
The N63B44D engine, while generally reliable, has been known to require occasional maintenance, particularly related to the cooling system and turbochargers. Regular oil changes and adherence to BMW’s recommended maintenance schedule are crucial for ensuring long-term reliability. Today, the G30 M550i xDrive represents a compelling value on the used car market, offering a significant amount of performance and luxury for the price. Its combination of power, comfort, and technology continues to appeal to buyers seeking a high-performance executive sedan.
