2022 Alpina D3 Sedan (G20 facelift ) S 3.0 (355 Hp) Mild Hybrid AWD SWITCH-TRONIC

Technical Specifications

The Alpina D3 Sedan (G20, facelift 2022) S 3.0 is a performance-oriented diesel sedan based on the BMW 3 Series (G20) platform. Launched after the 2022 LCI update for the 3 Series, it represents Alpina’s interpretation of a sporty, yet refined, diesel touring car. The D3 S 3.0 is part of the broader D3 range, which also includes a Touring (wagon) variant. Alpina, unlike many performance tuners, receives factory-level access to BMW components and engineering data, allowing for a seamless integration of their modifications. This results in a vehicle that feels thoroughly engineered rather than simply modified.

Powertrain & Engine Architecture

At the heart of the D3 S 3.0 lies a 3.0-liter inline-six cylinder diesel engine, designated as the B57D30S0. This engine is a heavily modified version of BMW’s B57 engine family. The ‘S3.0’ designation indicates Alpina’s specific enhancements. The engine utilizes a sophisticated mild-hybrid (MHEV) system with a 48-volt electrical architecture, providing a small power boost and enabling features like smoother start-stop operation and coasting. The engine employs two variable geometry turbochargers (BiTurbo) and an intercooler to maximize power and efficiency. Fuel is delivered via a high-pressure common rail direct injection system. The valvetrain features a Double Overhead Camshaft (DOHC) design with four valves per cylinder. The engine’s high compression ratio of 16.5:1 contributes to its thermal efficiency. Power is transmitted to all four wheels via a ZF 8-speed automatic transmission, specifically tuned by Alpina and branded as ‘SWITCH-TRONIC’. This transmission offers both fully automatic operation and manual gear selection via steering wheel-mounted paddles.

Driving Characteristics

The D3 S 3.0 delivers a remarkably refined and potent driving experience. The 730 Nm (538.42 lb-ft) of torque, available from a low 1750 rpm, provides effortless acceleration in any gear. The mild-hybrid system helps to eliminate turbo lag, resulting in a responsive throttle. The 8-speed SWITCH-TRONIC transmission shifts quickly and smoothly, contributing to the car’s overall composure. While not as overtly aggressive as some gasoline-powered performance sedans, the D3 S 3.0 offers a substantial surge of power that makes it exceptionally capable on both winding roads and open highways. The all-wheel-drive system provides excellent traction, particularly in adverse weather conditions. Compared to the standard 330d, the D3 S 3.0 offers significantly more power and a more focused driving experience. The suspension is tuned to provide a balance between comfort and handling, offering a more controlled and engaging ride than the standard 3 Series.

Equipment & Trim Levels

The Alpina D3 S 3.0 comes generously equipped as standard. Interior features typically include premium leather upholstery, Alpina-specific interior trim (often utilizing wood or carbon fiber), sport seats with adjustable bolstering, and a comprehensive infotainment system with navigation and connectivity features. Standard exterior features include Alpina-designed aerodynamic enhancements, such as a front spoiler, rear diffuser, and subtle trunk lid spoiler. Alpina-specific 19-inch alloy wheels are also standard. Optional extras can include a panoramic sunroof, upgraded sound system, adaptive cruise control, and a variety of customization options for the interior and exterior.

Chassis & Braking

The D3 S 3.0 benefits from a revised chassis setup compared to the standard 3 Series. Alpina utilizes stiffer springs and dampers, along with reinforced anti-roll bars, to improve handling and reduce body roll. The suspension geometry is also subtly adjusted to optimize cornering performance. The braking system features ventilated discs on all four wheels, providing ample stopping power. Alpina also offers an optional high-performance braking system with larger rotors and calipers for even more demanding driving situations.

Market Reception & Comparison

The Alpina D3 S 3.0 has been well-received by automotive critics, who praise its blend of performance, refinement, and efficiency. It is often positioned as a compelling alternative to high-performance gasoline-powered sedans, offering comparable performance with significantly better fuel economy. Compared to other diesel variants of the 3 Series, such as the 330d, the D3 S 3.0 offers a substantial power advantage and a more exclusive ownership experience. Its fuel economy of 6.9 l/100 km (34.1 US mpg) is impressive for a vehicle of its performance capabilities. Reliability is generally considered to be excellent, benefiting from Alpina’s meticulous engineering and BMW’s robust mechanical components.

Legacy

The Alpina D3 S 3.0 (G20) represents a continuation of Alpina’s long-standing tradition of creating unique and high-performance automobiles. The B57 engine, in its various iterations, has proven to be a durable and reliable powerplant. The combination of the potent diesel engine, sophisticated mild-hybrid system, and Alpina’s engineering expertise ensures that the D3 S 3.0 will likely hold its value well in the used car market. As a relatively rare and exclusive vehicle, it is expected to appeal to enthusiasts seeking a distinctive and rewarding driving experience.