The Alpina XB7 4.4 V8 xDrive Switch-Tronic is a high-performance luxury sport activity vehicle (SAV) produced by the German automotive manufacturer Alpina from December 2020 to December 2022. Based on the BMW X7, the XB7 represents Alpina’s interpretation of a supremely capable and luxurious SUV, blending their signature performance enhancements with BMW’s technology and spaciousness. This variant, powered by a twin-turbocharged 4.4-liter V8 engine producing 621 horsepower, sits at the pinnacle of the XB7 lineup, offering a significant performance upgrade over the standard X7 models and other engine options.
Technical Specifications
| Brand | Alpina |
| Model | XB7 |
| Generation | XB7 |
| Type (Engine) | 4.4 V8 (621 Hp) xDrive Switch-Tronic |
| Start of production | December, 2020 |
| End of production | December, 2022 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SAV |
| Seats | 6 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 13.7 l/100 km (17.2 US mpg, 20.6 UK mpg, 7.3 km/l) |
| CO2 emissions (WLTP) | 311 g/km |
| Fuel consumption (urban) | 16 l/100 km (14.7 US mpg, 17.7 UK mpg, 6.3 km/l) |
| Fuel consumption (extra urban) | 9.7 l/100 km (24.2 US mpg, 29.1 UK mpg, 10.3 km/l) |
| Fuel consumption (combined) | 12 l/100 km (19.6 US mpg, 23.5 UK mpg, 8.3 km/l) |
| CO2 emissions (NEDC) | 274 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.2 sec |
| Acceleration 0 – 62 mph | 4.2 sec |
| Acceleration 0 – 60 mph | 4.0 sec |
| Maximum speed | 290 km/h (180.2 mph) |
| Emission standard | Euro 6d ISC-FCM |
| Weight-to-power ratio | 4.3 kg/Hp, 233.9 Hp/tonne |
| Weight-to-torque ratio | 3.3 kg/Nm, 301.3 Nm/tonne |
| Power | 621 Hp @ 5500-6500 rpm |
| Power per litre | 141.3 Hp/l |
| Torque | 800 Nm @ 2000-5000 rpm (590.05 lb.-ft. @ 2000-5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N63B44T3 |
| 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 | BiTurbo, Intercooler |
| Engine oil capacity | 10.5 l (11.1 US qt | 9.24 UK qt) |
| Kerb Weight | 2655 kg (5853.27 lbs.) |
| Max. weight | 3290 kg (7253.21 lbs.) |
| Max load | 635 kg (1399.94 lbs.) |
| Trunk (boot) space – minimum | 750 l (26.49 cu. ft.) |
| Trunk (boot) space – maximum | 2120 l (74.87 cu. ft.) |
| Fuel tank capacity | 83 l (21.93 US gal | 18.26 UK gal) |
| Permitted trailer load with brakes (12%) | 3500 kg (7716.18 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 5151 mm (202.8 in.) |
| Width | 2000 mm (78.74 in.) |
| Width including mirrors | 2218 mm (87.32 in.) |
| Height | 1797 mm (70.75 in.) |
| Wheelbase | 3105 mm (122.24 in.) |
| Front track | 1682 mm (66.22 in.) |
| Rear (Back) track | 1703 mm (67.05 in.) |
| Ride height (ground clearance) | 213 mm (8.39 in.) |
| Minimum turning circle (turning diameter) | 13 m (42.65 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives permanently the four wheels of the vehicle. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission Switch-Tronic |
| Front brakes | Ventilated discs, 395×36 mm |
| Rear brakes | Ventilated discs, 398×28 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 285/45 R21 113Y XL |
| Wheel rims size | 9.5J x 21 |
INTRODUCTION
The Alpina XB7 4.4 V8 xDrive Switch-Tronic, launched in December 2020, represents a significant upgrade to the BMW X7 platform. Alpina, known for its bespoke performance enhancements of BMW vehicles, took the already capable X7 and elevated it to a new level of luxury and power. Built on the G07 generation X7, the XB7 aims to deliver a unique driving experience that combines the practicality of a large SUV with the performance characteristics of a sports car. Production continued through December 2022, establishing a relatively short but impactful production run.
Powertrain & Engine Architecture
At the heart of the XB7 is Alpina’s meticulously tuned version of BMW’s N63B44T3 4.4-liter twin-turbocharged V8 engine. This engine differs significantly from the standard BMW implementation, featuring specially designed pistons, a revised cooling system, and larger turbochargers. These modifications result in an output of 621 horsepower and 800 Nm (590 lb-ft) of torque. The engine utilizes direct fuel injection and operates with a compression ratio of 10.5:1. The ‘Switch-Tronic’ transmission is an 8-speed automatic, heavily modified by Alpina for quicker shifts and more responsive performance. It features a unique shift program tailored to the engine’s power delivery, offering both automatic and manual shift modes. The powertrain is paired with BMW’s xDrive all-wheel-drive system, providing optimal traction and stability.
Driving Characteristics
The XB7 4.4 V8 delivers exhilarating performance for a vehicle of its size. Acceleration from 0 to 60 mph is achieved in around 4.0 seconds, and it boasts a top speed of 290 km/h (180 mph). The revised transmission programming and increased torque output contribute to a remarkably responsive driving experience. While the standard X7 offers a comfortable ride, the XB7’s suspension is tuned for more dynamic handling, with stiffer springs and dampers. However, Alpina maintains a focus on ride quality, ensuring that the XB7 remains a comfortable and refined cruiser. The all-wheel-drive system provides excellent grip in various conditions, enhancing both acceleration and cornering stability. The gear ratios are optimized for both rapid acceleration and efficient highway cruising.
Equipment & Trim Levels
The XB7 comes exceptionally well-equipped as standard. Interior features include premium Lavalina leather upholstery, Alpina-specific interior trim, a panoramic sunroof, and a Bowers & Wilkins Diamond Surround Sound System. Standard technology includes BMW’s iDrive infotainment system with a large touchscreen display, a digital instrument cluster, and a comprehensive suite of driver-assistance features. Optional extras included rear-seat entertainment systems, individual rear seats with massage function, and a variety of exterior customization options. The interior design incorporates Alpina’s signature blue and green stitching and unique wood trim, differentiating it from the standard X7.
Chassis & Braking
The XB7 utilizes a reinforced chassis and suspension components to handle the increased power and performance. The suspension features air springs on both the front and rear axles, providing adjustable ride height and damping. Braking duties are handled by large, ventilated disc brakes on all four wheels – 395mm at the front and 398mm at the rear – ensuring ample stopping power. The braking system is equipped with ABS, stability control, and other advanced safety features. The XB7’s steering is precise and well-weighted, providing a confident feel on the road.
Market Reception & Comparison
The Alpina XB7 was generally well-received by automotive critics, who praised its blend of performance, luxury, and practicality. It was often compared to other high-performance luxury SUVs, such as the Porsche Cayenne Turbo and the Range Rover Sport SVR. While the XB7 offered comparable performance to these rivals, it distinguished itself with its unique Alpina character and more spacious interior. Fuel economy, as expected for a vehicle of this size and performance, was relatively low, averaging around 13.7 l/100 km (17.2 US mpg). Reliability was generally considered to be good, benefiting from BMW’s engineering and Alpina’s meticulous attention to detail.
Legacy
The Alpina XB7 4.4 V8 xDrive Switch-Tronic represents a compelling offering in the high-performance luxury SUV segment. Its powerful engine, refined handling, and luxurious interior have made it a desirable vehicle on the used car market. The N63B44T3 engine, while complex, has proven to be relatively reliable when properly maintained. The XB7’s limited production run and unique Alpina branding contribute to its collectibility. As a testament to Alpina’s engineering prowess, the XB7 continues to be appreciated by enthusiasts seeking a distinctive and high-performing SUV.
