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Alpina B4 Cabrio (facelift 2017) S 3.0 (440 Hp) Switch-Tronic
Overall Rating
Alpina B4:
The Alpina B4 and Alpina D4 are high-performance compact executive cars manufactured by the German automobile manufacturer, Alpina. Based on the BMW 4 Series, the B4 and D4 are manufactured in coupé and convertible body styles. The first generation B4 and D4 were launched in 2014 and the more powerful B4 S was launched in 2017.
Introduced at the 2013 Tokyo Motor Show, the B4 is based on the outgoing 435i. The N55 straight-six engine was modified by using twin-turbochargers, a 61 percent larger intercooler and a new crankshaft. The engine also utilized new pistons; all of these modifications allow the engine to generate 408 PS between 5,550 and 6,250 rpm and 601 N⋅m between 3,000 and 4,000 rpm. The engine is mated to a ZF 8HP70 "Touch tronic" paddle shift automatic transmission, with no manual transmission options available. The transmission was modified to provide better shift timing. There were options for either a rear-wheel-drive or all-wheel-drive drivetrain. The car has three driving modes "Comfort", "Sport" and "Sport +", which depend on the tweaking of the power delivered by the engine and suspension system settings according to the driving conditions....(Read more on Wikipedia)
Cabrio (facelift 2017) Overview:
Alpina B4 (Cabrio (facelift 2017)). With 660 Nm of torque, it offers ample pulling power. It has moderate fuel consumption (~11.1 l/100km). With a weight of 1915 kg, it falls in the mid‑range. Rear‑wheel drive offers dynamic handling and sporty feedback. Acceleration is excellent (0–100 km/h in 4.3 s). The top speed reaches 304 km/h. A convertible car with a retractable roof, offering open-air driving experiences. Seating for 4 makes it ideal for daily use.
S 3.0 (440 Hp) Switch-Tronic Verdict:
Performance Verdict
Offers exhilarating performance with 440 Hp, delivering rapid acceleration and a smooth, powerful driving experience characteristic of Alpina's refined tuning.
Fuel Economy
Achieves a combined fuel economy of 8.3 l/100 km, which is respectable for a high-performance convertible of this caliber.
Pros and Cons:
Pros:
- • Exceptional performance and driving dynamics
- • High level of exclusivity and luxury
- • Comfortable ride quality for a sports convertible
- • Refined and powerful BiTurbo engine
- • Distinctive Alpina styling and interior
Cons:
- • Premium price point and running costs
- • Niche market appeal, potentially affecting resale
- • Limited practicality as a 2-door convertible
- • Fuel consumption can be high under spirited driving
Specifications:
Specifications are compared to those of the previous generation(Cabrio: 2014 - 2017).
| General: | |
|---|---|
| Brand: | Alpina |
| Model: | B4 |
| Generation: | Cabrio (facelift 2017) |
| Modification (Engine): | S 3.0 (440 Hp) Switch-Tronic |
| Start of production: | 2017 |
| End of production: | 2019 |
| Powertrain Architecture: | Internal Combustion engine |
| Body type: | Cabriolet |
| Seats: | 4 |
| Doors: | 2 |
| Engine: | |
|---|---|
| Power: | 440 Hp @ 5500-6250 rpm. |
| Power per litre: | 147.7 Hp/l |
| Torque: | 660 Nm @ 3000-4500 rpm. |
| Engine displacement: | 2979 |
| Number of cylinders: | 6 |
| Engine configuration: | Inline |
| Number of valves per cylinder: | 4 |
| Fuel injection system: | Direct injection |
| Engine aspiration: | BiTurbo, Intercooler |
| Engine layout: | Front, Longitudinal |
| Cylinder Bore: | 84 mm |
| Piston Stroke: | 89.6 mm |
| Compression ratio: | 10.2:1 |
| Performance: | |
|---|---|
| Fuel Type: | Petrol (Gasoline) |
| Fuel consumption (economy) - urban: | 11.1 l/100 km |
| Fuel consumption (economy) - extra urban: | 6.7 l/100 km |
| Fuel consumption (economy) - combined: | 8.3 l/100 km |
| Emission standard: | Euro 6 |
| Acceleration 0 - 100 km/h: | 4.3 sec |
| Acceleration 0 - 62 mph: | 4.3 sec |
| Maximum speed: | 304 km/h |
| Weight-to-power ratio: | 4.4 kg/Hp, 229.8 Hp/tonne |
| Weight-to-torque ratio: | 2.9 kg/Nm, 344.6 Nm/tonne |
| Acceleration 0 - 60 mph: | 4.1 sec |
| Space: | |
|---|---|
| Kerb Weight: | 1915 |
| Max. weight: | 2300 |
| Max load: | 385 |
| Trunk (boot) space - maximum: | 370 l |
| Trunk (boot) space - minimum: | 220 l |
| Permitted trailer load with brakes (12%): | 1700 kg |
| Fuel tank capacity: | 60 l |
| Permitted trailer load without brakes: | 750 kg |
| Size: | |
|---|---|
| Length: | 4640 mm [Same length.] |
| Width: | 1825 mm [Same width.] |
| Height: | 1380 mm [Same height.] |
| Wheelbase: | 2810 mm [Same wheelbase.] |
| Front track: | 1552 mm |
| Rear (Back) track: | 1576 mm |
| Powertrain: | |
|---|---|
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears | 8 |
| Transmission type | Automatic |
| Gearbox type | Switch-Tronic |
| Front brakes | Ventilated discs [Best for performance and cooling.] |
| Rear brakes | Ventilated discs [Best for performance and cooling.] |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/30 ZR20; 265/30 ZR20 |
| Wheel rims size | 8J x 20; 9J x 20 |
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