1999-2000 Alpina B12 (E38) 6.0 (430 Hp)

The Alpina B12 6.0 (E38), produced between 1999 and 2000, represents the pinnacle of Alpina’s involvement with the BMW E38 7 Series. This high-performance luxury sedan was not a product of BMW’s M division, but rather a meticulously engineered vehicle crafted by the independent manufacturer Alpina, renowned for its refined and powerful automobiles. Based on the already luxurious 750iL, the B12 6.0 featured a significantly upgraded engine, suspension, and interior appointments, solidifying its position as an exclusive and highly sought-after grand tourer. Production numbers were limited, making it a relatively rare vehicle today, appealing to collectors and enthusiasts alike. It was the last of the E38 B12 models, representing the ultimate evolution of the platform.

Technical Specifications

Powertrain & Engine Architecture

The heart of the B12 6.0 is its 6.0-liter V12 engine, based on BMW’s M73 engine block but extensively modified by Alpina. While the standard 750iL featured a 5.4-liter V12, Alpina bored and stroked the engine to increase displacement to 5,992 cc. This larger displacement, combined with high-compression pistons, a dynamically balanced crankshaft, and optimized cylinder heads, resulted in a power output of 430 horsepower at 5,800 rpm and 450 lb-ft of torque at 4,000 rpm. The engine utilized a Bosch Motronic engine management system, recalibrated by Alpina to suit the modified engine characteristics. Unlike the standard 750iL, the B12 6.0 exclusively came with a 5-speed automatic transmission, specifically reinforced to handle the increased power and torque. Alpina also modified the transmission’s shift points for more responsive performance. The exhaust system was also upgraded with a stainless steel system, contributing to both performance and a distinctive exhaust note.

Driving Characteristics

The Alpina B12 6.0 offered a unique driving experience, blending the comfort and refinement of the E38 7 Series with significantly enhanced performance. The increased power and torque delivered effortless acceleration, allowing for brisk overtaking and a relaxed cruising experience. While not as overtly sporty as a contemporary BMW M car, the B12 6.0 provided a substantial performance upgrade over the standard 750iL. The 5-speed automatic transmission, while not offering the direct control of a manual gearbox, was well-matched to the engine’s characteristics, providing smooth and relatively quick shifts. Alpina’s suspension modifications, including stiffer springs, revised dampers, and thicker anti-roll bars, reduced body roll and improved handling without sacrificing ride comfort. The car felt planted and stable at high speeds, making it an excellent long-distance grand tourer. The steering was precise and well-weighted, providing good feedback to the driver.

Equipment & Trim Levels

The B12 6.0 was exceptionally well-equipped, building upon the already luxurious appointments of the 750iL. Standard features included premium leather upholstery, wood trim, a comprehensive infotainment system, and a host of comfort and convenience features. Alpina added its own unique touches, including a bespoke steering wheel with Alpina badging, special instrumentation, and individually numbered plaques denoting the car’s production number. Customers could specify a wide range of optional extras, including rear-seat entertainment systems, upgraded audio systems, and various interior trim options. The exterior was distinguished by subtle Alpina-specific styling cues, including a front spoiler, rear spoiler, and unique alloy wheels. The interior was available in a variety of leather colors and wood finishes, allowing customers to personalize their vehicle.

Chassis & Braking

The B12 6.0 retained the E38’s double-wishbone front suspension and multi-link rear suspension, but with Alpina-specific modifications. As mentioned previously, stiffer springs and revised dampers were employed to improve handling and reduce body roll. The braking system consisted of ventilated disc brakes on all four wheels, with ABS anti-lock braking. Alpina did not significantly alter the braking system from the standard 750iL, as the existing system was deemed adequate for the increased performance. However, the brakes were known to be robust and provided ample stopping power. The car rode on unique Alpina 21-inch alloy wheels, which contributed to both its appearance and handling characteristics. Tire selection was crucial, with Alpina recommending high-performance tires to maximize grip.

Market Reception & Comparison

The Alpina B12 6.0 was generally well-received by automotive critics, who praised its blend of luxury, performance, and exclusivity. It was often compared to the BMW 750iL, with reviewers noting the B12 6.0’s superior performance and more focused driving experience. Compared to the standard 750iL, the B12 6.0 offered a significant power increase and improved handling. It was also positioned as a more exclusive alternative to the BMW M cars, offering a more refined and comfortable driving experience. Fuel economy, unsurprisingly, was not a strong point, with the B12 6.0 returning relatively low mpg figures. Reliability was generally good, although the complexity of the V12 engine and the car’s advanced features meant that maintenance costs could be substantial. The B12 6.0 was significantly more expensive than the 750iL, reflecting its limited production and exclusive nature.

Legacy

The Alpina B12 6.0 (E38) remains a highly desirable and collectible automobile. Its limited production numbers and unique character have ensured its continued appeal to enthusiasts. The 6.0-liter V12 engine is considered a masterpiece of engineering, and the car’s blend of luxury and performance is still impressive by today’s standards. While maintenance can be expensive, the B12 6.0 is generally considered to be a reliable vehicle when properly maintained. In the used car market, prices for well-maintained examples have steadily increased in recent years, reflecting the car’s rarity and desirability. The B12 6.0 represents a high point in Alpina’s history and a testament to the company’s commitment to creating exceptional automobiles. It stands as a unique and compelling alternative to the more mainstream luxury sedans of its era, offering a driving experience that is both refined and exhilarating.