The Alpina D4 Gran Coupe (G26, facelift 2024) S 3.0 represents the latest iteration of Alpina’s performance-focused diesel grand tourer, building upon the foundation of the BMW 4 Series Gran Coupe. Introduced in June 2024, this model year signifies a mid-cycle refresh, incorporating updated styling cues and enhanced technology. Positioned as a high-performance variant within the 4 Series Gran Coupe range, the D4 S 3.0 caters to drivers seeking a blend of luxury, performance, and efficiency. It occupies a niche above the standard 4 Series models, offering a more potent powertrain and distinctive Alpina-specific enhancements. The “facelift” designation indicates cosmetic and technological updates to the existing G26 generation, rather than a complete model redesign.
Technical Specifications
| Brand | Alpina |
| Model | D4 |
| Generation | D4 Gran Coupe (G26, facelift 2024) |
| Type | S 3.0 (355 Hp) Mild Hybrid AWD SWITCH-TRONIC |
| Start of production | June, 2024 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Coupe |
| Seats | 4 |
| Doors | 4 |
| Fuel consumption at Low speed (WLTP) | 11.2 l/100 km (21 US mpg, 25.2 UK mpg, 8.9 km/l) |
| Fuel consumption at Medium speed (WLTP) | 6.8 l/100 km (34.6 US mpg, 41.5 UK mpg, 14.7 km/l) |
| Fuel consumption at high speed (WLTP) | 6.1 l/100 km (38.6 US mpg, 46.3 UK mpg, 16.4 km/l) |
| Fuel consumption at very high speed (WLTP) | 6.9 l/100 km (34.1 US mpg, 40.9 UK mpg, 14.5 km/l) |
| Combined fuel consumption (WLTP) | 7.2 l/100 km (32.7 US mpg, 39.2 UK mpg, 13.9 km/l) |
| CO2 emissions (WLTP) | 188 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 4.8 sec |
| Acceleration 0 – 62 mph | 4.8 sec |
| Acceleration 0 – 60 mph | 4.6 sec |
| Acceleration 0 – 200 km/h | 19.1 sec |
| Maximum speed | 270 km/h (167.77 mph) |
| Emission standard | Euro 6e |
| Weight-to-power ratio | 5.5 kg/Hp, 182.5 Hp/tonne |
| Weight-to-torque ratio | 2.7 kg/Nm, 375.3 Nm/tonne |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Power | 355 Hp @ 4000-4200 rpm |
| Power per litre | 118.6 Hp/l |
| Torque | 730 Nm @ 1750-2750 rpm (538.42 lb.-ft. @ 1750-2750 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B57D30 |
| Engine displacement | 2993 cm3 (182.64 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 90 mm (3.54 in.) |
| Compression ratio | 16.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Kerb Weight | 1945 kg (4287.99 lbs.) |
| Max. weight | 2420 kg (5335.19 lbs.) |
| Max load | 475 kg (1047.2 lbs.) |
| Trunk (boot) space – minimum | 470 l (16.6 cu. ft.) |
| Trunk (boot) space – maximum | 1290 l (45.56 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal, 12.98 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4792 mm (188.66 in.) |
| Width | 1850 mm (72.83 in.) |
| Width including mirrors | 2073 mm (81.61 in.) |
| Height | 1440 mm (56.69 in.) |
| Wheelbase | 2856 mm (112.44 in.) |
| Front track | 1593 mm (62.72 in.) |
| Rear (Back) track | 1588 mm (62.52 in.) |
| Minimum turning circle | 12 m (39.37 ft.) |
| Drivetrain Architecture | ICE and electric motor drive all four wheels, operating in mixed mode. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 8 |
| Gearbox type | Automatic transmission SWITCH-TRONIC |
| Front suspension | Spring Strut, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs, 395 mm |
| Rear brakes | Ventilated discs, 345 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size (Front) | 255/35 ZR20 |
| Tires size (Rear) | 285/30 ZR20 |
| Wheel rims size (Front) | 8.5J x 20 |
| Wheel rims size (Rear) | 10J x 20 |
Powertrain & Engine Architecture
At the heart of the Alpina D4 Gran Coupe S 3.0 lies the BMW B57D30 3.0-liter inline-six diesel engine. This engine is extensively modified by Alpina to deliver 355 horsepower at 4000-4200 rpm and a substantial 730 Nm (538.42 lb.-ft.) of torque between 1750 and 2750 rpm. The engine utilizes a sophisticated diesel commonrail fuel injection system and a bi-turbocharger setup with an intercooler, maximizing both power and efficiency. The addition of a 48V mild-hybrid system further enhances efficiency and responsiveness, providing a small power boost during acceleration and enabling smoother start-stop operation. The engine features a double overhead camshaft (DOHC) valvetrain and a high compression ratio of 16.5:1. Power is transmitted to all four wheels via an 8-speed automatic transmission branded as SWITCH-TRONIC, offering both fully automatic operation and manual gear selection via steering wheel-mounted paddles.
Driving Characteristics
The D4 Gran Coupe S 3.0 delivers a refined yet potent driving experience. The 355 hp output and 730 Nm of torque provide strong acceleration, with a 0-60 mph time of approximately 4.6 seconds and a top speed of 270 km/h (167.77 mph). The SWITCH-TRONIC transmission is well-tuned, providing smooth and quick gear changes. Compared to the standard 4 Series diesel models, the Alpina offers significantly more power and torque, resulting in noticeably quicker acceleration and improved passing performance. While not as overtly sporty as some gasoline-powered performance coupes, the D4 S 3.0 excels in providing effortless cruising and strong performance in all conditions. The all-wheel-drive system ensures excellent traction and stability, particularly in inclement weather.
Equipment & Trim Levels
The Alpina D4 Gran Coupe comes standard with a comprehensive array of luxury and performance features. Interior appointments typically include premium leather upholstery, Alpina-specific interior trim (such as wood or carbon fiber), and sport seats. Standard equipment also includes a premium sound system, navigation system, and a suite of advanced driver-assistance systems. Optional extras can include upgraded leather options, a panoramic sunroof, and various customization options through Alpina’s bespoke program. The exterior features unique Alpina aerodynamic enhancements, including a front spoiler, rear diffuser, and distinctive alloy wheels.
Chassis & Braking
The D4 Gran Coupe features a sport-tuned suspension system designed to balance comfort and handling. The front suspension utilizes spring struts with a transverse stabilizer, while the rear employs an independent multi-link setup, also with a stabilizer bar. Braking duties are handled by ventilated discs on all four wheels, measuring 395 mm at the front and 345 mm at the rear. The car is equipped with ABS (Anti-lock braking system) and other electronic stability control systems. The chassis is optimized for the increased power and torque, providing a stable and controlled driving experience.
Market Reception & Comparison
The Alpina D4 Gran Coupe S 3.0 has been generally well-received by automotive critics, praised for its blend of performance, luxury, and efficiency. Compared to other high-performance diesel models, such as the BMW M440d, the Alpina offers a more exclusive and refined experience. While the M440d may prioritize outright sportiness, the D4 S 3.0 focuses on providing a more comfortable and grand touring-oriented driving experience. Fuel economy is respectable for a performance vehicle, with combined WLTP figures of 7.2 l/100 km (32.7 US mpg). Reliability is generally considered to be good, benefiting from Alpina’s meticulous engineering and BMW’s robust mechanical components.
Legacy
The Alpina D4 Gran Coupe S 3.0 represents a compelling option for buyers seeking a unique and high-performance diesel grand tourer. The B57 engine, in its Alpina-tuned form, has proven to be a durable and reliable powerplant. As a relatively new model, long-term reliability data is still emerging, but early indications suggest that the D4 S 3.0 will hold its value well and provide years of enjoyable driving. On the used car market, these vehicles are expected to command a premium due to their exclusivity and performance credentials.
