The Alpina B3 Sedan (G20, facelift 2024) GT 3.0, introduced in June 2024, represents the pinnacle of performance within the Alpina B3 range. Based on the BMW 3 Series (G20) platform, this variant is positioned as the highest-performance offering, exceeding the capabilities of the standard B3 models. It caters to enthusiasts seeking a blend of luxury, exhilarating performance, and sophisticated technology. The “facelift” designation indicates updates to the G20 generation, incorporating revised styling and enhanced features. This model continues Alpina’s tradition of refining BMW vehicles, offering a unique driving experience distinct from its Bavarian counterpart.
Technical Specifications
| Brand | Alpina |
| Model | B3 |
| Generation | B3 Sedan (G20, facelift 2024) |
| Type | GT 3.0 (529 Hp) AWD SWITCH-TRONIC |
| Start of production | June, 2024 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption at Low speed (WLTP) | 17.6 l/100 km (13.4 US mpg, 16.1 UK mpg, 5.7 km/l) |
| Fuel consumption at Medium speed (WLTP) | 10.5 l/100 km (22.4 US mpg, 26.9 UK mpg, 9.5 km/l) |
| Fuel consumption at high speed (WLTP) | 8.8 l/100 km (26.7 US mpg, 32.1 UK mpg, 11.4 km/l) |
| Fuel consumption at very high speed (WLTP) | 9.1 l/100 km (25.8 US mpg, 31 UK mpg, 11 km/l) |
| Combined fuel consumption (WLTP) | 10.5-10.6 l/100 km (22.4 – 22.2 US mpg, 26.9 – 26.6 UK mpg, 9.5 – 9.4 km/l) |
| CO2 emissions (WLTP) | 239-241 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 3.4 sec |
| Acceleration 0 – 62 mph | 3.4 sec |
| Acceleration 0 – 60 mph | 3.2 sec |
| Acceleration 0 – 200 km/h | 11.6 sec |
| Maximum speed | 308 km/h (191.38 mph) |
| Emission standard | Euro 6e |
| Weight-to-power ratio | 3.4 kg/Hp, 293.9 Hp/tonne |
| Weight-to-torque ratio | 2.5 kg/Nm, 405.6 Nm/tonne |
| Power | 529 Hp @ 6250-6500 rpm |
| Power per litre | 176.7 Hp/l |
| Torque | 730 Nm @ 2500-4500 rpm (538.42 lb.-ft. @ 2500-4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | S58B30 |
| 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 | 9.3:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine systems | Start & Stop System, Particulate filter |
| Kerb Weight | 1800 kg (3968.32 lbs.) |
| Max. weight | 2340 kg (5158.82 lbs.) |
| Max load | 540 kg (1190.5 lbs.) |
| Trunk (boot) space – minimum | 480 l (16.95 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4725 mm (186.02 in.) |
| Width | 1827 mm (71.93 in.) |
| Width including mirrors | 2068 mm (81.42 in.) |
| Height | 1440 mm (56.69 in.) |
| Wheelbase | 2851 mm (112.24 in.) |
| Front track | 1577 mm (62.09 in.) |
| Rear (Back) track | 1572 mm (61.89 in.) |
| Minimum turning circle | 12 m (39.37 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 suspension | Spring Strut, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| 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: 255/30 ZR20, Rear wheel tires: 265/30 ZR20 |
| Wheel rims size | Front wheel rims: 8.5J x 20, Rear wheel rims: 9.5J x 20 |
Powertrain & Engine Architecture
At the heart of the B3 GT 3.0 lies the Alpina-tuned version of the BMW S58 3.0-liter inline-six engine, designated S58B30. This engine utilizes a twin-turbocharged configuration with a single turbocharger per cylinder bank, delivering 529 horsepower at 6250-6500 rpm and a substantial 730 Nm (538 lb-ft) of torque between 2500 and 4500 rpm. Direct fuel injection and a high compression ratio of 9.3:1 contribute to both power output and efficiency. The engine features a sophisticated cooling system designed to manage the increased thermal load associated with the higher power output. The engine is longitudinally mounted, driving all four wheels. The “SWITCH-TRONIC” 8-speed automatic transmission is a ZF unit, specifically calibrated by Alpina for quicker shifts and more responsive performance. It offers manual shift modes for driver control.
Driving Characteristics
The B3 GT 3.0 delivers a remarkably potent driving experience. Acceleration from 0 to 60 mph is achieved in just 3.2 seconds, and it reaches a top speed of 308 km/h (191 mph). The all-wheel-drive system provides excellent traction, allowing for confident acceleration even in challenging conditions. The automatic transmission is well-tuned, providing smooth and quick gear changes. Compared to the standard 3 Series or even the lower-powered B3 variants, the GT 3.0 offers significantly more power and a more aggressive throttle response. While the increased power is readily available, the car remains surprisingly manageable, thanks to Alpina’s careful calibration of the engine and transmission.
Equipment & Trim Levels
The B3 GT 3.0 comes standard with a comprehensive list of features, including Alpina-specific exterior styling cues (front and rear spoilers, unique wheels), a luxurious interior with premium leather upholstery, and a host of advanced driver-assistance systems. Interior trim options include various wood veneers and aluminum accents. Optional extras include a premium sound system, adaptive suspension, and a head-up display. The interior features Alpina-branded sport seats, a leather-wrapped steering wheel with Alpina stitching, and unique instrument cluster graphics.
Chassis & Braking
The B3 GT 3.0 utilizes a reinforced chassis and suspension components to handle the increased power. The suspension features stiffer springs and dampers, along with a thicker stabilizer bar, to reduce body roll and improve handling. Braking duties are handled by ventilated discs at all four corners, providing ample stopping power. The ABS system is finely tuned to work in conjunction with the all-wheel-drive system, ensuring optimal braking performance and stability.
Market Reception & Comparison
The Alpina B3 GT 3.0 has been well-received by automotive critics, who praise its blend of performance, luxury, and refinement. Compared to the BMW M3, the B3 GT 3.0 offers a more comfortable ride and a more understated appearance, while still delivering comparable performance. Fuel economy, while not a primary focus, is reasonable for a high-performance vehicle, with combined WLTP figures ranging from 10.5 to 10.6 l/100 km. Reliability is generally considered to be excellent, benefiting from Alpina’s meticulous engineering and quality control.
Legacy
The Alpina B3 GT 3.0 represents a compelling offering in the high-performance sedan segment. Its combination of a powerful engine, sophisticated technology, and luxurious interior makes it a desirable vehicle for discerning enthusiasts. The S58 engine, in its Alpina-tuned form, is expected to be a durable and reliable powertrain. On the used car market, these models are likely to hold their value well, appealing to collectors and enthusiasts seeking a unique and high-performance vehicle.
