The Alpina XD4 (G02) 3.0d, producing 388 horsepower, represents a high-performance variant of the BMW X4 Sports Activity Coupe (SAC). Introduced in 2018, it occupies a unique position within the X4 lineup, bridging the gap between the standard BMW models and the full-fledged Alpina X4. The XD4 is built upon the G02 X4 platform, sharing its core architecture but distinguished by Alpina’s signature performance enhancements, luxurious appointments, and distinctive styling cues. This model aimed to deliver a blend of grand touring comfort and impressive acceleration, appealing to buyers seeking a more exclusive and powerful SUV experience.
Technical Specifications
| Brand | Alpina |
| Model | XD4 |
| Generation | XD4 (G02) |
| Type (Engine) | 3.0d (388 Hp) xDrive Switch-Tronic |
| Start of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SAC |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban | 7.8 l/100 km (30.2 US mpg, 36.2 UK mpg, 12.8 km/l) |
| Fuel consumption (economy) – extra urban | 6.3 l/100 km (37.3 US mpg, 44.8 UK mpg, 15.9 km/l) |
| Fuel consumption (economy) – combined | 6.9 l/100 km (34.1 US mpg, 40.9 UK mpg, 14.5 km/l) |
| CO2 emissions | 183 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 4.6 sec |
| Acceleration 0 – 62 mph | 4.6 sec |
| Acceleration 0 – 60 mph | 4.4 sec |
| Maximum speed | 268 km/h (166.53 mph) |
| Emission standard | Euro 6 d |
| Weight-to-power ratio | 5.3 kg/Hp, 189.7 Hp/tonne |
| Weight-to-torque ratio | 2.7 kg/Nm, 376.5 Nm/tonne |
| Power | 388 Hp @ 4000-5000 rpm |
| Power per litre | 129.6 Hp/l |
| Torque | 770 Nm @ 1750-3000 rpm (567.92 lb.-ft. @ 1750-3000 rpm) |
| Engine layout | Front, Longitudinal |
| 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 | 16:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine systems | Particulate filter |
| Kerb Weight | 2045 kg (4508.45 lbs.) |
| Max. weight | 2550 kg (5621.79 lbs.) |
| Max load | 505 kg (1113.33 lbs.) |
| Trunk (boot) space – minimum | 525 l (18.54 cu. ft.) |
| Trunk (boot) space – maximum | 1430 l (50.5 cu. ft.) |
| Fuel tank capacity | 68 l (17.96 US gal | 14.96 UK gal) |
| Permitted trailer load with brakes (12%) | 2400 kg (5291.09 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4751 mm (187.05 in.) |
| Width | 1927 mm (75.87 in.) |
| Height | 1615 mm (63.58 in.) |
| Wheelbase | 2864 mm (112.76 in.) |
| Front track | 1614 mm (63.54 in.) |
| Rear (Back) track | 1628 mm (64.09 in.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission Switch-Tronic |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 255/45 ZR20; 285/40 ZR20 |
| Wheel rims size | 8.5J x 20; 10J x 20 |
Powertrain & Engine Architecture
At the heart of the XD4 3.0d lies a 3.0-liter inline-six cylinder diesel engine, designated with Alpina’s internal engine codes. This engine is based on the BMW B57 engine family, but extensively modified by Alpina to deliver significantly increased performance. Key upgrades include a larger turbocharger, optimized intercooling, and a revised engine management system. The engine utilizes a sophisticated diesel commonrail fuel injection system, delivering precise fuel metering for optimal combustion. The valvetrain features four valves per cylinder, contributing to efficient gas exchange. The engine’s output of 388 horsepower and 770 Nm (567.92 lb-ft) of torque is a substantial increase over the standard BMW X4 diesel offerings.
Power is transmitted to all four wheels via BMW’s xDrive all-wheel-drive system, coupled with a ZF 8-speed automatic transmission. Alpina’s “Switch-Tronic” programming enhances the transmission’s responsiveness and allows for manual gear selection via steering wheel-mounted paddles. This transmission is known for its smooth shifts and ability to handle the engine’s high torque output.
Driving Characteristics
The XD4 3.0d delivers a markedly different driving experience compared to the standard X4. The increased power and torque result in significantly quicker acceleration – 0 to 60 mph in approximately 4.4 seconds. The Switch-Tronic transmission provides rapid and precise gear changes, enhancing the sense of performance. While the standard X4 offers a comfortable ride, the XD4 strikes a balance between comfort and sportiness. Alpina’s suspension tuning, while retaining the X4’s adaptive dampers, provides a more controlled and engaging driving experience. The all-wheel-drive system ensures excellent traction in various conditions. Compared to the X4 M40i (gasoline), the XD4 offers comparable acceleration but with superior fuel economy and a broader torque curve.
Equipment & Trim Levels
The XD4 3.0d is generously equipped as standard, reflecting its premium positioning. Interior features typically include Alpina-specific leather upholstery with unique stitching patterns, a sports steering wheel, and Alpina-branded interior trim. Standard equipment also includes a comprehensive suite of driver-assistance systems, such as adaptive cruise control, lane departure warning, and automatic emergency braking. Optional extras include a premium sound system, panoramic sunroof, and various customization options for interior materials and colors. The XD4 generally sits at the top of the X4 range, offering a more luxurious and exclusive experience than even the fully-equipped BMW X4 M40i.
Chassis & Braking
The XD4 utilizes the X4’s robust chassis, featuring a MacPherson strut front suspension and a multi-link rear suspension. Alpina makes subtle adjustments to the suspension geometry and damper settings to optimize handling and ride comfort. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. The XD4’s weight distribution is well-balanced, contributing to its stable and predictable handling characteristics. The standard X4’s rear drum brakes are upgraded to ventilated discs on the XD4, further enhancing braking performance.
Market Reception & Comparison
The Alpina XD4 3.0d was generally well-received by automotive critics, who praised its blend of performance, luxury, and refinement. Reviewers noted the engine’s impressive power and torque, as well as the transmission’s responsiveness. The XD4’s fuel economy was also highlighted as a positive attribute, particularly considering its performance capabilities. Compared to other high-performance SUVs, such as the Porsche Macan and the Mercedes-AMG GLC, the XD4 offered a unique combination of diesel power, all-wheel-drive traction, and Alpina’s distinctive character. The XD4’s diesel engine, while offering excellent fuel economy, may not appeal to buyers who prefer the sound and feel of a gasoline engine.
Legacy
The Alpina XD4 3.0d has established itself as a desirable and relatively rare SUV in the used car market. The 3.0-liter diesel engine and ZF 8-speed transmission are known for their reliability, provided they are properly maintained. Regular servicing, including oil changes and filter replacements, is crucial for ensuring the longevity of the powertrain. The XD4’s unique Alpina styling and luxurious interior continue to attract buyers seeking a distinctive and high-performance SUV. As with any high-performance vehicle, potential buyers should carefully inspect the vehicle’s service history and consider a pre-purchase inspection by a qualified mechanic.
