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Alpina B8 Gran Coupe (G16) 4.4 V8 (621 Hp) xDrive Switch-Tronic
Overall Rating
Alpina B8:
The second-generation of the BMW 8 Series consists of the BMW G14 , BMW G15 grand tourers and BMW G16 executive cars. The G14/G15/G16 generation has been in production since 2018, and is often collectively referred to as the G15.
It is the successor to the BMW 6 Series range and marks the return of the BMW 8 Series nameplate after nearly two decades, which was previously produced as the E31 until its discontinuation in 1999....(Read more on Wikipedia)
Gran Coupe (G16) Overview:
Alpina B8 (Gran Coupe (G16)). With 800 Nm of torque, it offers ample pulling power. At around 2175 kg, it’s on the heavier side. All‑wheel drive provides excellent grip, ideal for off‑road use. Acceleration is excellent (0–100 km/h in 3.4 s). The top speed reaches 324 km/h. A two-door car with a fixed roof, known for its sporty design and dynamic performance. Seating for 5 makes it ideal for daily use.
4.4 V8 (621 Hp) xDrive Switch-Tronic Verdict:
Performance Verdict
The 4.4L BiTurbo V8, code N63B44T3, delivers a formidable 621 Hp and 800 Nm of torque, propelling the B8 from 0-100 km/h in a blistering 3.4 seconds. Paired with Alpina's refined Switch-Tronic 8-speed automatic and xDrive, it offers relentless acceleration and superb all-weather traction, making it a true high-performance grand tourer.
Fuel Economy
With a combined fuel consumption of 11.1 l/100 km (NEDC equivalent) and 11.9 l/100 km (WLTP), the B8's economy is respectable for a high-output 4.4L BiTurbo V8. While not frugal, it's competitive within its performance segment, reflecting efficient engine tuning and modern powertrain management.
Community Verdict
This rating is based on comments found on Reddit, scanned using artificial intelligence, and may not accurately reflect reality.
3.9 / 5
Based on AI analysis of 9 discussions
Read What Owners Say
Pros and Cons:
Pros:
- • Exceptional performance from the BiTurbo V8 engine.
- • Luxurious and exquisitely crafted interior with unique Alpina touches.
- • Superb ride comfort and handling balance for a grand tourer.
- • Exclusivity and understated elegance compared to M models.
- • Advanced xDrive all-wheel-drive system for confident traction.
Cons:
- • Very high purchase price and potentially high running costs.
- • Fuel consumption, while reasonable for its class, is still significant.
- • Limited rear passenger space for a 'Gran Coupe' compared to true sedans.
- • Complex high-performance engine may lead to higher maintenance expenses.
- • Subtle styling might be too understated for some seeking more aggressive looks.
Specifications:
Specifications are compared to those of the previous generation(Gran Coupe (G16 LCI, facelift 2022): July, 2025 - ).
| General: | |
|---|---|
| Brand: | Alpina |
| Model: | B8 |
| Generation: | Gran Coupe (G16) |
| Modification (Engine): | 4.4 V8 (621 Hp) xDrive Switch-Tronic |
| Start of production: | March, 2021 |
| End of production: | February, 2022 |
| Powertrain Architecture: | Internal Combustion engine |
| Body type: | Coupe |
| Seats: | 5 |
| Doors: | 4 |
| Engine: | |
|---|---|
| Engine systems: | Start & Stop System |
| Power: | 621 Hp @ 5500-6500 rpm. Same horsepower |
| Power per litre: | 141.3 Hp/l [Same length.] |
| Torque: | 800 Nm @ 2000-5000 rpm. |
| Engine Model/Code: | N63B44T3 More details about the engine N63B44T3 |
| Engine displacement: | 4395 |
| Number of cylinders: | 8 |
| Engine configuration: | V-engine |
| Number of valves per cylinder: | 4 |
| Fuel injection system: | Direct injection |
| Engine aspiration: | BiTurbo, Intercooler |
| Engine oil capacity: | 11.1 l |
| Engine layout: | Front, Longitudinal |
| Cylinder Bore: | 89 mm mm |
| Piston Stroke: | 88.3 mm mm |
| Compression ratio: | 10.5:1 |
| Performance: | |
|---|---|
| Fuel Type: | Petrol (Gasoline) |
| Fuel consumption (economy) - urban: | 15.8 l/100 km |
| Fuel consumption (economy) - extra urban: | 8.4 l/100 km |
| Combined fuel consumption (WLTP): | 11.9 l/100 km |
| Fuel consumption (economy) - urban (NEDC, WLTP equivalent): | 15.8 l/100 km |
| Fuel consumption (economy) - extra urban (NEDC, WLTP equivalent): | 8.4 l/100 km |
| Fuel consumption (economy) - combined (NEDC, WLTP equivalent): | 11.1 l/100 km |
| Fuel consumption (economy) - combined: | 11.1 l/100 km |
| Emission standard: | Euro 6d-ISC-FCM |
| Acceleration 0 - 100 km/h: | 3.4 sec |
| Acceleration 0 - 62 mph: | 3.4 sec |
| Maximum speed: | 324 km/h |
| Weight-to-power ratio: | 3.5 kg/Hp, 285.5 Hp/tonne |
| Weight-to-torque ratio: | 2.7 kg/Nm, 367.8 Nm/tonne |
| Acceleration 0 - 60 mph: | 3.3 sec |
| Space: | |
|---|---|
| Kerb Weight: | 2175 |
| Max. weight: | 2600 |
| Max load: | 425 |
| Trunk (boot) space - minimum: | 440 l |
| Fuel tank capacity: | 68 l |
| Size: | |
|---|---|
| Length: | 5092 mm mm [Same length.] |
| Width: | 1932 mm mm [Same width.] |
| Height: | 1428 mm mm [Same height.] |
| Wheelbase: | 3023 mm mm [Same wheelbase.] |
| Width including mirrors: | 2137 mm |
| Front track: | 1623 mm |
| Rear (Back) track: | 1666 mm |
| Ride height (ground clearance): | 135 mm |
| Minimum turning circle (turning diameter): | 12.6 m [above average] |
| Powertrain: | |
|---|---|
| Drivetrain Architecture | The Internal combustion engine (ICE) drives permanently the four wheels of the vehicle. |
| Drive wheel | All wheel drive (4x4) |
| Number of gears | 8 |
| Transmission type | Automatic |
| Gearbox type | Switch-Tronic |
| Front brakes | Ventilated discs, 395 mm [Best for performance and cooling.] |
| Rear brakes | Ventilated discs, 398 mm [Best for performance and cooling.] |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | Front wheel tires: 245/35 ZR21 96Y |
| Wheel rims size | Front wheel rims: 8.5J x 21 |
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