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Alpina B4 Cabrio 6.0 (410 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 Overview:
Alpina B4 (Cabrio). With 600 Nm of torque, it offers ample pulling power. It has moderate fuel consumption (~10.8 l/100km). With a weight of 1840 kg, it falls in the mid‑range. Rear‑wheel drive offers dynamic handling and sporty feedback. Acceleration is excellent (0–100 km/h in 4.5 s). The top speed reaches 301 km/h. A convertible car with a retractable roof, offering open-air driving experiences. Seating for 4 makes it ideal for daily use.
Based on the BMW 4 Series Coupe (F32) tested by Euro NCAP, the B4 Cabrio benefits from a strong safety cell and comprehensive active/passive safety features, achieving a top rating for occupant protection.
6.0 (410 Hp) Switch-Tronic Verdict:
Performance Verdict
The 3.0-liter BiTurbo engine, meticulously tuned by Alpina, delivers exceptional power (410 Hp) and torque (600 Nm), providing thrilling acceleration (4.5s 0-100km/h) and effortless high-speed cruising, perfectly matched with the smooth 8-speed Switch-Tronic gearbox.
Fuel Economy
Achieving a combined 8 l/100 km for a 410 Hp performance cabriolet is commendable, showcasing efficient engineering despite its potent output, making it a relatively practical choice for daily use and long journeys.
Pros and Cons:
Pros:
- • Exhilarating performance with 410 Hp and 600 Nm torque.
- • Exclusive and understated design compared to M-models.
- • Superb ride comfort and handling balance for a grand tourer.
- • High-quality interior materials and craftsmanship.
- • Open-top driving experience with refined acoustics.
- • Relatively good fuel economy for its performance class.
Cons:
- • High purchase price and potentially higher maintenance costs due to bespoke parts.
- • Limited rear seat space and trunk capacity with the roof down.
- • Niche market appeal, which might affect resale to a broader audience.
- • Heavier than its coupe counterpart, slightly impacting ultimate agility.
Specifications:
| General: | |
|---|---|
| Brand: | Alpina |
| Model: | B4 |
| Generation: | Cabrio |
| Modification (Engine): | 6.0 (410 Hp) Switch-Tronic |
| Start of production: | 2014 |
| End of production: | 2017 |
| Powertrain Architecture: | Internal Combustion engine |
| Body type: | Cabriolet |
| Seats: | 4 |
| Doors: | 2 |
| Engine: | |
|---|---|
| Power: | 410 Hp @ 5500-6250 rpm. |
| Power per litre: | 137.6 Hp/l |
| Torque: | 600 Nm @ 3000-4000 rpm. |
| Engine displacement: | 2979 |
| Number of cylinders: | 6 |
| Engine configuration: | Inline |
| 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: | 10.8 l/100 km |
| Fuel consumption (economy) - extra urban: | 6.4 l/100 km |
| Fuel consumption (economy) - combined: | 8 l/100 km |
| Emission standard: | Euro 6 |
| Acceleration 0 - 100 km/h: | 4.5 sec |
| Acceleration 0 - 62 mph: | 4.5 sec |
| Maximum speed: | 301 km/h |
| Weight-to-power ratio: | 4.5 kg/Hp, 222.8 Hp/tonne |
| Weight-to-torque ratio: | 3.1 kg/Nm, 326.1 Nm/tonne |
| Acceleration 0 - 60 mph: | 4.3 sec |
| Space: | |
|---|---|
| Kerb Weight: | 1840 |
| Max. weight: | 2300 |
| Max load: | 460 |
| 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 |
| Width: | 1825 mm |
| Height: | 1380 mm |
| Wheelbase: | 2810 mm |
| 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 |
| Rear brakes | Ventilated discs |
| 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 |
Is the Alpina B4 your dream ride or just a daily drive? Let's talk!