The Alpina B5 (E60) 4.4 V8 S Switch-Tronic, produced between 2008 and 2011, represents a high-performance iteration of the BMW 5 Series (E60) chassis. Alpina, a renowned German automotive engineering company, independently refined the 5 Series, creating a vehicle that blended luxury, performance, and exclusivity. This particular variant, powered by a supercharged 4.4-liter V8 engine producing 530 horsepower, occupied the top echelon of the B5 lineup, offering a significant performance upgrade over the standard 5 Series models and even the B5 variants with smaller engines. It was primarily marketed towards discerning drivers seeking a powerful and refined grand tourer.
Technical Specifications
| Brand | Alpina |
| Model | B5 |
| Generation | B5 (E60) |
| Type (Engine) | 4.4 V8 S (530 Hp) Switch-Tronic |
| Start of production | 2008 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban | 18.6 l/100 km (12.6 US mpg, 15.2 UK mpg, 5.4 km/l) |
| Fuel consumption (economy) – extra urban | 8.7 l/100 km (27 US mpg, 32.5 UK mpg, 11.5 km/l) |
| Fuel consumption (economy) – combined | 12.3 l/100 km (19.1 US mpg, 23 UK mpg, 8.1 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.6 sec |
| Acceleration 0 – 62 mph | 4.6 sec |
| Acceleration 0 – 60 mph | 4.4 sec |
| Maximum speed | 317 km/h (196.97 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 3.4 kg/Hp, 295.3 Hp/tonne |
| Weight-to-torque ratio | 2.5 kg/Nm, 403.9 Nm/tonne |
| Power | 530 Hp @ 5500 rpm |
| Power per litre | 120.5 Hp/l |
| Torque | 725 Nm @ 4750 rpm (534.73 lb.-ft. @ 4750 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | H1/2 |
| Engine displacement | 4398 cm3 (268.38 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 92 mm (3.62 in.) |
| Piston Stroke | 82.7 mm (3.26 in.) |
| Compression ratio | 9:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Supercharger, Intercooler |
| Valvetrain | DOHC |
| Kerb Weight | 1795 kg (3957.3 lbs.) |
| Max. weight | 2260 kg (4982.45 lbs.) |
| Max load | 465 kg (1025.15 lbs.) |
| Trunk (boot) space – maximum | 520 l (18.36 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Length | 4841 mm (190.59 in.) |
| Width | 1846 mm (72.68 in.) |
| Height | 1468 mm (57.8 in.) |
| Wheelbase | 2888 mm (113.7 in.) |
| Front track | 1566 mm (61.65 in.) |
| Rear (Back) track | 1574 mm (61.97 in.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Front suspension | Spring Strut, Transverse stabilizer |
| Rear suspension | Independent multi-link suspension, Transverse stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | Front wheel tires: 245/35 R20Rear wheel tires: 285/30 R20 |
Powertrain & Engine Architecture
At the heart of the B5 (E60) 4.4 V8 S lies Alpina’s meticulously engineered 4.4-liter V8 engine, internally designated as the H1/2. This engine is based on the BMW N62 block but features significant modifications, including a mechanically driven supercharger and an intercooler. The supercharger, unlike a turbocharger, provides instant boost across the rev range, contributing to the engine’s linear power delivery. The engine utilizes multi-port fuel injection and a double overhead camshaft (DOHC) valvetrain. The compression ratio is set at 9:1. The engine produces 530 horsepower at 5500 rpm and a substantial 725 Nm (534.73 lb-ft) of torque at 4750 rpm. This power is channeled through a ZF 6HP26 6-speed automatic transmission, dubbed “Switch-Tronic” by Alpina. This transmission offers both fully automatic operation and a manual shift mode, allowing the driver to exert more control over gear selection.
Driving Characteristics
The combination of the supercharged V8 and the 6-speed automatic transmission results in exhilarating performance. The B5 (E60) 4.4 V8 S accelerates from 0 to 60 mph in approximately 4.4 seconds and achieves a top speed of 317 km/h (196.97 mph). The Switch-Tronic transmission provides smooth and relatively quick shifts, although it doesn’t offer the lightning-fast gear changes of some modern dual-clutch transmissions. The supercharger eliminates much of the turbo lag often associated with forced induction, delivering a broad and usable powerband. Compared to the naturally aspirated 550i, the B5 offers a significant increase in both horsepower and torque, resulting in noticeably quicker acceleration. Compared to the diesel-powered B5 variants (like the B5d), the 4.4 V8 S prioritizes outright performance over fuel economy.
Equipment & Trim Levels
The Alpina B5 (E60) 4.4 V8 S was exceptionally well-equipped. Standard features included leather upholstery, heated front seats, a premium sound system, and Alpina-specific exterior and interior styling cues. The interior featured Alpina badging on the steering wheel, seats, and instrument cluster. Exterior enhancements included unique Alpina front and rear bumpers, side skirts, and 20-inch alloy wheels. Optional extras included a sunroof, navigation system, and upgraded interior trim options. The overall ambiance was one of understated luxury and sporting refinement.
Chassis & Braking
The B5 (E60) utilized the standard BMW 5 Series chassis, but with Alpina-specific modifications to the suspension. The front suspension featured spring struts with a transverse stabilizer, while the rear employed an independent multi-link setup, also with a transverse stabilizer. These modifications were aimed at improving handling and ride comfort. The braking system consisted of ventilated discs on all four wheels, coupled with an Anti-lock Braking System (ABS). The suspension tuning was geared towards providing a balance between sporty handling and comfortable cruising.
Market Reception & Comparison
The Alpina B5 (E60) 4.4 V8 S was generally well-received by automotive critics. It was praised for its powerful engine, refined ride, and luxurious interior. However, its fuel consumption was often noted as being relatively high. Compared to the standard BMW 550i, the B5 offered a more exclusive and comprehensively engineered package. Compared to the B5 variants with smaller engines, the 4.4 V8 S represented the ultimate performance offering. Reliability was generally good, although the complex supercharger system required careful maintenance.
Legacy
The Alpina B5 (E60) 4.4 V8 S remains a desirable vehicle in the used car market. Its combination of performance, luxury, and exclusivity continues to appeal to enthusiasts. The H1/2 engine, while complex, is generally considered to be robust when properly maintained. Regular servicing, including oil changes and supercharger belt inspections, is crucial for long-term reliability. Today, these cars represent a unique blend of BMW engineering and Alpina’s signature tuning, offering a compelling alternative to more mainstream performance sedans.
