The BMW X3 G45 30, launched in June 2024, represents the latest iteration of BMW’s popular compact luxury Sports Activity Vehicle (SAV). This variant, powered by a 2.0-liter turbocharged four-cylinder engine with mild hybrid technology, occupies a key position in the X3 lineup, offering a balance between performance, efficiency, and price. It’s designed to appeal to buyers seeking a premium SUV experience without the higher costs associated with the more powerful six-cylinder models. The G45 generation builds upon the success of the previous F25 and G08 models, incorporating updated technology, a refined interior, and enhanced driving dynamics.
Technical Specifications
| Brand | BMW |
| Model | X3 |
| Generation | X3 (G45) |
| Type (Engine) | 30 (255 Hp) Mild Hybrid xDrive Steptronic |
| Start of production | June, 2024 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | SAV |
| Seats | 5 |
| Doors | 5 |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.3 sec |
| Acceleration 0 – 62 mph | 6.3 sec |
| Acceleration 0 – 60 mph | 6 sec |
| Maximum speed | 210 km/h (130.49 mph) |
| Weight-to-power ratio | 7.4 kg/Hp, 134.6 Hp/tonne |
| Weight-to-torque ratio | 4.7 kg/Nm, 211.2 Nm/tonne |
| Gross battery capacity | 0.9 kWh |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Power | 255 Hp @ 4700-6500 rpm |
| Power per litre | 127.6 Hp/l |
| Torque | 400 Nm @ 1600-4500 rpm (295.02 lb.-ft. @ 1600-4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B48B20O2 |
| 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.) |
| Compression ratio | 11.6:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection and Multi-port manifold injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Valvetrain | VALVETRONIC, Double-VANOS |
| Kerb Weight | 1894 kg (4175.56 lbs.) |
| Max. weight | 2500 kg (5511.56 lbs.) |
| Max load | 606 kg (1336 lbs.) |
| Trunk (boot) space – minimum | 570 l (20.13 cu. ft.) |
| Trunk (boot) space – maximum | 1700 l (60.03 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Permitted trailer load with brakes (12%) | 1815 kg (4001.39 lbs.) |
| Permitted towbar download | 100 kg (220.46 lbs.) |
| Length | 4755 mm (187.2 in.) |
| Width | 1920 mm (75.59 in.) |
| Width including mirrors | 2132 mm (83.94 in.) |
| Height | 1660 mm (65.35 in.) |
| Wheelbase | 2865 mm (112.8 in.) |
| Front track | 1614 mm (63.54 in.) |
| Rear (Back) track | 1659 mm (65.31 in.) |
| Front overhang | 880 mm (34.65 in.) |
| Rear overhang | 1010 mm (39.76 in.) |
| Ride height (ground clearance) | 216 mm (8.5 in.) |
| Minimum turning circle (turning diameter) | 12.2 m (40.03 ft.) |
| Approach angle | 20.6° |
| Departure angle | 22° |
| Ramp-over (brakeover) angle | 18.7° |
| Drivetrain Architecture | ICE and electric motor, permanent all-wheel drive |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, 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 |
| Tires size | 245/50 R19 |
| Wheel rims size | 8.5J x 19 |
Powertrain & Engine Architecture
At the heart of the X3 30 lies BMW’s B48B20O2 2.0-liter inline-four cylinder engine. This engine benefits from a single twin-scroll turbocharger, direct fuel injection, and BMW’s VALVETRONIC variable valve timing and Double-VANOS variable camshaft timing systems. These technologies work in concert to optimize power delivery, fuel efficiency, and emissions. The mild hybrid system, utilizing a 48V lithium-ion battery, provides an electric boost to assist the engine during acceleration and allows for smoother start-stop operation. The engine produces 255 horsepower at 4700-6500 rpm and 295 lb-ft of torque between 1600-4500 rpm. Power is transmitted to all four wheels via BMW’s eight-speed Steptronic automatic transmission, known for its quick and smooth shifts. This transmission is programmed for efficiency and comfort, but also offers a Sport mode for more aggressive shifting.
Driving Characteristics
The X3 30 with the 2.0-liter engine and automatic transmission delivers a comfortable and refined driving experience. While not as overtly sporty as the higher-powered X3 M40i, it provides ample power for everyday driving and highway cruising. The mild hybrid system contributes to a responsive feel, particularly during initial acceleration. The eight-speed automatic transmission is well-matched to the engine’s torque curve, providing smooth and timely gear changes. Compared to a manual transmission equipped X3, the automatic prioritizes ease of use and convenience. The xDrive all-wheel-drive system provides excellent traction in various weather conditions, enhancing stability and confidence. The steering is precise and well-weighted, offering a good connection to the road.
Equipment & Trim Levels
The X3 30 typically comes standard with a comprehensive suite of features, including BMW’s iDrive infotainment system with a large touchscreen display, navigation, Apple CarPlay and Android Auto compatibility, a premium sound system, and a range of driver-assistance technologies such as lane departure warning and forward collision warning. Interior upholstery is typically a high-quality synthetic leather, with optional upgrades to genuine leather available. Common optional extras include a panoramic sunroof, heated seats, a head-up display, and advanced driver-assistance systems like adaptive cruise control and parking assist. Trim levels may vary by market, but generally offer increasing levels of luxury and technology.
Chassis & Braking
The X3 G45 utilizes a robust chassis with a MacPherson strut front suspension and a multi-link rear suspension. Both ends feature stabilizer bars to minimize body roll during cornering. The suspension is tuned for a balance between comfort and handling. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. The X3 30 is equipped with ABS, electronic stability control, and traction control as standard safety features.
Market Reception & Comparison
The BMW X3 30 has been well-received by automotive critics, who praise its comfortable ride, refined interior, and efficient powertrain. Compared to other compact luxury SUVs, such as the Audi Q5 and Mercedes-Benz GLC, the X3 30 offers a compelling combination of performance, features, and value. Fuel economy is competitive within its class, and the mild hybrid system contributes to improved efficiency. Reliability has generally been good, although some owners have reported minor issues with the infotainment system.
Legacy
The B48 engine family, including the B48B20O2 variant found in the X3 30, has proven to be a reliable and durable powertrain. While long-term reliability data for the G45 generation is still emerging, the B48 engine has a solid track record in other BMW models. The X3 30 is expected to hold its value well in the used car market, appealing to buyers seeking a well-rounded and technologically advanced compact luxury SUV.
