The Alpina B6 (E36), produced between 1992 and 1993, represents a unique and highly regarded iteration of the BMW 3-Series (E36) platform. Alpina, a renowned German automotive engineering company, took the standard 3-Series and elevated it with significant performance enhancements, luxurious appointments, and distinctive styling. The B6 2.8i 24V, powered by a 2.8-liter inline-six engine producing 240 horsepower, occupied a performance niche between the standard 3-Series models and the more overtly sporting M3. It was positioned as a sophisticated grand tourer, offering a blend of performance and comfort that appealed to discerning drivers.
Technical Specifications
| Brand | Alpina |
| Model | B6 |
| Generation | B6 (E36) |
| Type (Engine) | 2.8 i 24V (240 Hp) |
| Start of production | 1992 |
| End of production | 1993 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban | 13.2 l/100 km (17.8 US mpg, 21.4 UK mpg, 7.6 km/l) |
| Fuel consumption (economy) – extra urban | 6.9 l/100 km (34.1 US mpg, 40.9 UK mpg, 14.5 km/l) |
| Fuel consumption (economy) – combined | 8.2 l/100 km (28.7 US mpg, 34.4 UK mpg, 12.2 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.5 sec |
| Acceleration 0 – 62 mph | 6.5 sec |
| Acceleration 0 – 60 mph | 6.2 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Weight-to-power ratio | 5.5 kg/Hp, 180.5 Hp/tonne |
| Weight-to-torque ratio | 4.5 kg/Nm, 220.3 Nm/tonne |
| Power | 240 Hp @ 6000 rpm |
| Power per litre | 87.2 Hp/l |
| Torque | 293 Nm @ 4200 rpm (216.11 lb.-ft. @ 4200 rpm) |
| Engine layout | Front, Longitudinal |
| Engine displacement | 2753 cm3 (168 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 82.8 mm (3.26 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Kerb Weight | 1330 kg (2932.15 lbs.) |
| Max. weight | 1850 kg (4078.55 lbs.) |
| Max load | 520 kg (1146.4 lbs.) |
| Trunk (boot) space – minimum | 370 l (13.07 cu. ft.) |
| Trunk (boot) space – maximum | 1125 l (39.73 cu. ft.) |
| Fuel tank capacity | 62 l (16.38 US gal, 13.64 UK gal) |
| Length | 4325 mm (170.28 in.) |
| Width | 1645 mm (64.76 in.) |
| Height | 1370 mm (53.94 in.) |
| Wheelbase | 2570 mm (101.18 in.) |
| Front track | 1405 mm (55.31 in.) |
| Rear (Back) track | 1415 mm (55.71 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 | 5 gears, manual transmission |
| Front suspension | Coil spring |
| Rear suspension | Coil spring |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system), Hydraulic Steering |
| Tires size | 235/40 R17 |
Powertrain & Engine Architecture
At the heart of the B6 2.8i is the M52B28 inline-six engine. This 2.8-liter powerplant, derived from BMW’s M50 series, was a significant upgrade over the standard 3-Series engines. It featured a cast iron block, aluminum cylinder head with four valves per cylinder (24V), and a dual overhead camshaft (DOHC) design. The engine utilized Bosch Motronic 3.1 fuel injection and a relatively high 10.5:1 compression ratio. This combination resulted in a smooth, responsive power delivery and a characteristic inline-six sound. The B6 exclusively came with a 5-speed manual transmission, providing a direct connection between the engine and the rear wheels. Alpina carefully selected the gear ratios to optimize both acceleration and cruising efficiency.
Driving Characteristics
The Alpina B6 2.8i offered a distinctly refined driving experience. While the 240 horsepower output wasn’t dramatically higher than some of the larger standard 3-Series engines, the B6’s engine delivered its power more linearly and with greater enthusiasm. The manual transmission allowed for precise control, and the well-tuned suspension provided a comfortable yet engaging ride. Acceleration to 60 mph was achieved in approximately 6.2 seconds, and the car could reach a top speed of 155 mph. Compared to the later M3 (E36), the B6 prioritized comfort and usability over outright track performance. The M3’s stiffer suspension and more aggressive gearing made it a more focused sports car, while the B6 offered a more balanced and sophisticated grand touring experience.
Equipment & Trim Levels
Alpina B6 models were exceptionally well-equipped, even by the standards of the time. Standard features included leather upholstery, power-adjustable front seats, air conditioning, a sunroof, and an upgraded sound system. Alpina also added its signature touches, such as unique interior trim pieces, a special steering wheel, and exterior styling cues like a front spoiler and rear decklid spoiler. Optional extras included a limited-slip differential, which further enhanced handling, and a more comprehensive sound system. The interior typically featured a dark wood trim, adding to the car’s luxurious ambiance.
Chassis & Braking
The B6 utilized the standard E36 3-Series chassis, but with several Alpina-specific modifications. The suspension was tuned for a balance of comfort and handling, with stiffer springs and dampers compared to the base 3-Series. The B6 featured disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) was standard. The car rode on 17-inch alloy wheels, typically fitted with 235/40 ZR17 tires, which contributed to its improved grip and handling.
Market Reception & Comparison
The Alpina B6 2.8i was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, and luxurious interior. Critics noted that it offered a compelling alternative to the standard 3-Series and the more hardcore M3. Fuel economy was respectable for a performance car of its era, averaging around 28.7 US mpg in combined driving. Compared to the 328i, the B6 offered a noticeable performance advantage and a more exclusive feel. Compared to the M3, it provided a more comfortable and refined driving experience, albeit with slightly less outright performance.
Legacy
The Alpina B6 (E36) 2.8i remains a sought-after classic among BMW enthusiasts. The M52B28 engine is known for its reliability and durability, and the car’s overall build quality is excellent. Well-maintained examples command a premium in the used car market. The B6 represents a unique chapter in the E36 3-Series story, showcasing Alpina’s ability to create a truly special and refined performance car. Its blend of performance, luxury, and exclusivity continues to appeal to collectors and drivers alike, ensuring its place as a significant vehicle in automotive history.
