The BMW X3 Long (G48) 25L, producing 190 horsepower, with the xDrive all-wheel drive system and Steptronic automatic transmission, represents a significant offering in the compact luxury SUV segment, particularly tailored for the Chinese market. Introduced in February 2025, this variant is an extension of the third-generation X3 (G01) platform, specifically the long-wheelbase version (G48) designed to cater to the preference for increased rear passenger space in China. It slots into the X3 lineup as a mid-range option, balancing performance and efficiency with a focus on comfort and practicality. This model aims to provide a refined driving experience with BMW’s signature handling characteristics, packaged in a more spacious and luxurious form.
Technical Specifications
| Brand | BMW |
| Model | X3 |
| Generation | X3 Long (G48) |
| Type (Engine) | 25L (190 Hp) xDrive Steptronic |
| Start of production | February, 2025 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SAV (Sports Activity Vehicle) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (combined) | 8.1 l/100 km (29 US mpg, 34.9 UK mpg, 12.3 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.9 sec |
| Acceleration 0 – 62 mph | 8.9 sec |
| Acceleration 0 – 60 mph | 8.5 sec |
| Maximum speed | 214 km/h (132.97 mph) |
| Emission standard | China VI |
| Weight-to-power ratio | 9.9 kg/Hp, 100.8 Hp/tonne |
| Weight-to-torque ratio | 6.1 kg/Nm, 164.5 Nm/tonne |
| Power | 190 Hp @ 5000 rpm |
| Power per litre | 95.1 Hp/l |
| Torque | 310 Nm @ 1500-4000 rpm (228.64 lb.-ft. @ 1500-4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B48B20H |
| Engine displacement | 1998 cm3 (121.93 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 94.6 mm (3.72 in.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-scroll turbo, Intercooler |
| Valvetrain | VALVETRONIC, Double-VANOS |
| Engine systems | Start & Stop System, Particulate filter |
| Kerb Weight | 1885 kg (4155.71 lbs.) |
| Max. weight | 2460 kg (5423.37 lbs.) |
| Max load | 575 kg (1267.66 lbs.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Length | 4865 mm (191.54 in.) |
| Width | 1920 mm (75.59 in.) |
| Height | 1664 mm (65.51 in.) |
| Wheelbase | 2975 mm (117.13 in.) |
| Front track | 1614 mm (63.54 in.) |
| Rear track | 1659 mm (65.31 in.) |
| Ride height (ground clearance) | 214 mm (8.43 in.) |
| Approach angle | 20° |
| Departure angle | 22° |
| Drivetrain Architecture | All-wheel drive (4×4) |
| Number of gears | 8 |
| Gearbox type | Automatic transmission Steptronic |
| Front suspension | Spring Strut, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| 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 |
| Front tires | 245/50 R19; 255/45 R20; 255/40 R21 |
| Rear tires | 245/50 R19; 285/40 R20; 285/35 R21 |
| Wheel rims size | 19; 20; 21 |
INTRODUCTION
The BMW X3 Long (G48) 25L xDrive Steptronic is a variant specifically engineered for the Chinese automotive market, where longer wheelbase vehicles are highly sought after. Launched in 2025, it builds upon the success of the G01 X3, offering increased rear legroom and a more luxurious experience. The “25L” designation indicates the engine displacement (approximately 2.0 liters) and power output. This model is positioned as a comfortable and capable daily driver, appealing to families and professionals who prioritize space, refinement, and the BMW brand experience. The G48 platform extends the wheelbase by 110mm compared to the standard X3, directly addressing the demand for more rear passenger comfort.
Powertrain & Engine Architecture
At the heart of the X3 25L lies the BMW B48B20H 2.0-liter inline-four cylinder engine. This engine utilizes direct fuel injection and is turbocharged with a twin-scroll turbocharger, coupled with an intercooler for increased efficiency. The engine also incorporates BMW’s VALVETRONIC variable valve timing and Double-VANOS variable camshaft timing systems, optimizing both power and fuel economy. The B48 engine is known for its responsiveness and relatively smooth power delivery. Paired with this engine is the 8-speed Steptronic automatic transmission. This transmission is a torque-converter automatic, offering smooth shifts and adaptive learning capabilities to suit the driver’s style. The xDrive all-wheel-drive system is a permanent all-wheel-drive system, intelligently distributing torque between the front and rear axles based on driving conditions, enhancing traction and stability.
Driving Characteristics
The 190 hp and 310 Nm (228.64 lb-ft) of torque produced by the 2.0-liter engine provide adequate performance for everyday driving. While not as sporty as higher-output X3 variants (like the xDrive30i), the 25L offers a comfortable and relaxed driving experience. The Steptronic transmission is well-tuned, providing seamless gear changes and contributing to a smooth ride. Acceleration from 0-60 mph takes approximately 8.5 seconds. The xDrive system provides confident handling in various weather conditions. Compared to manual transmission versions (not typically offered in this configuration), the automatic prioritizes convenience and ease of use. The longer wheelbase contributes to a more stable and comfortable ride, particularly on longer journeys.
Equipment & Trim Levels
The X3 Long 25L typically comes standard with a comprehensive suite of features, including BMW’s iDrive infotainment system with a touchscreen display, navigation, Apple CarPlay and Android Auto compatibility, and a premium sound system. Standard interior appointments include leatherette upholstery, power-adjustable front seats, and dual-zone automatic climate control. Available optional extras include upgraded leather upholstery, a panoramic sunroof, a head-up display, and advanced driver-assistance systems such as adaptive cruise control and lane-keeping assist. Trim levels often vary based on regional specifications, but generally offer packages that bundle popular options together.
Chassis & Braking
The X3 Long 25L utilizes a MacPherson strut front suspension and a multi-link rear suspension, both incorporating stabilizer bars to minimize body roll. The suspension is tuned for comfort, providing a compliant ride without sacrificing handling precision. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. The ABS (Anti-lock Braking System) and electronic stability control systems enhance safety and control. The electric power steering provides precise and responsive steering feel.
Market Reception & Comparison
The X3 Long 25L has been well-received in the Chinese market, where its increased rear passenger space and comfortable ride are highly valued. Critics have praised its refined interior, user-friendly technology, and overall driving experience. Compared to other X3 variants, the 25L offers a more affordable entry point into the X3 range, while still providing a premium experience. Fuel economy is competitive within its class, and the B48 engine has proven to be relatively reliable. Competitors in the Chinese market include the Audi Q5L, Mercedes-Benz GLC L, and Volvo XC60.
Legacy
The B48 engine family has become a mainstay in BMW’s lineup, known for its efficiency and reliability. While long-term reliability data for the X3 Long 25L is still emerging, the B48 engine has generally proven to be durable. The G48 platform, specifically designed for the Chinese market, demonstrates BMW’s commitment to adapting its products to meet the specific needs of its customers. As the automotive landscape evolves, the X3 Long 25L represents a successful blend of luxury, practicality, and technology, catering to the demands of a discerning clientele.
