The BMW X3 (G01) 30i xDrive Steptronic, produced from December 2017 through 2021, represents a key offering within the second generation of BMW’s popular compact luxury SUV. Positioned as a mid-range variant, the 30i bridged the gap between the entry-level 20i and the performance-oriented 30d and M40i models. This configuration, pairing a 2.0-liter turbocharged four-cylinder engine with an eight-speed automatic transmission and BMW’s xDrive all-wheel-drive system, aimed to deliver a balance of efficiency, performance, and everyday usability for the North American and European markets. The G01 generation marked a significant step forward for the X3, incorporating increased dimensions, updated technology, and a more refined driving experience compared to its predecessor.
Technical Specifications
| Brand | BMW |
| Model | X3 |
| Generation | X3 (G01) |
| Type (Engine) | 30i (252 Hp) xDrive Steptronic |
| Start of production | December, 2017 |
| End of production | 2021 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SAV (Sports Activity Vehicle) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 8.4-8.5 l/100 km (28 – 27.7 US mpg) |
| Fuel consumption (extra urban) | 6.4-6.7 l/100 km (36.8 – 35.1 US mpg) |
| Fuel consumption (combined) | 7.2-7.3 l/100 km (32.7 – 32.2 US mpg) |
| CO2 emissions | 164-168 g/km |
| 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 | 240 km/h (149.13 mph) |
| Emission standard | Euro 6d-TEMP |
| Weight-to-power ratio | 7.1 kg/Hp, 140.8 Hp/tonne |
| Weight-to-torque ratio | 5.1 kg/Nm, 195.5 Nm/tonne |
| Power | 252 Hp @ 5200-6500 rpm |
| Power per litre | 126.1 Hp/l |
| Torque | 350 Nm @ 1450-4800 rpm (258.15 lb.-ft. @ 1450-4800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B48B20B |
| 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 | 10.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Engine oil capacity | 5.25 l (5.55 US qt | 4.62 UK qt) |
| Coolant | 12.6 l (13.31 US qt | 11.09 UK qt) |
| Kerb Weight | 1790 kg (3946.27 lbs.) |
| Max. weight | 2385 kg (5258.02 lbs.) |
| Max load | 595 kg (1311.75 lbs.) |
| Trunk (boot) space – minimum | 550 l (19.42 cu. ft.) |
| Trunk (boot) space – maximum | 1600 l (56.5 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (8%) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load with brakes (12%) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 100 kg (220.46 lbs.) |
| Length | 4708 mm (185.35 in.) |
| Width | 1891 mm (74.45 in.) |
| Width including mirrors | 2138 mm (84.17 in.) |
| Height | 1676 mm (65.98 in.) |
| Wheelbase | 2864 mm (112.76 in.) |
| Minimum turning circle | 12.0 m (39.37 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 8 |
| Gearbox type | automatic transmission Steptronic |
| 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 | 225/60 R18 |
| Wheel rims size | 7J x 18 |
Powertrain & Engine Architecture
The heart of the X3 30i is BMW’s B48B20B 2.0-liter inline-four cylinder engine. This engine utilizes a single twin-scroll turbocharger, direct fuel injection, and variable valve timing (Double-VANOS) to deliver a responsive and efficient driving experience. The B48 engine is known for its robust construction and relatively straightforward maintenance. The engine produces 252 horsepower at 5200-6500 rpm and 295 lb-ft of torque between 1450 and 4800 rpm. This power is then channeled through BMW’s eight-speed Steptronic automatic transmission, a unit renowned for its smooth shifts and intelligent programming. The xDrive all-wheel-drive system intelligently distributes power between the front and rear axles, enhancing traction and stability in various driving conditions.
Driving Characteristics
The X3 30i xDrive Steptronic offers a comfortable and composed driving experience. While not as overtly sporty as the M40i, the 30i provides ample power for everyday driving and highway passing. The eight-speed automatic transmission is well-tuned, offering quick and seamless gear changes. The xDrive system provides excellent grip, particularly in inclement weather. Compared to the six-cylinder 30d diesel, the 30i feels less muscular in terms of outright acceleration, but it offers a more refined and responsive engine character. Against the base 20i model, the 30i provides a noticeable performance upgrade, making it a more enjoyable and versatile vehicle.
Equipment & Trim Levels
The X3 30i typically came standard with features such as BMW’s iDrive infotainment system with a 10.25-inch touchscreen display, automatic climate control, power-adjustable front seats, and a suite of advanced driver-assistance systems including lane departure warning and forward collision warning. Interior upholstery was typically a combination of leatherette and cloth, with optional full leather upgrades available. Common optional extras included a panoramic sunroof, premium sound system, navigation system, and adaptive cruise control. Trim levels varied slightly by market, but generally offered packages that bundled together popular options.
Chassis & Braking
The G01 X3 utilizes a sophisticated chassis design featuring a MacPherson strut front suspension and a multi-link rear suspension. This setup provides a good balance of ride comfort and handling precision. The 30i model typically featured ventilated disc brakes on all four wheels, providing ample stopping power. The electronic stability control system (DSC) works in conjunction with the xDrive system to maintain optimal control in challenging driving situations. Steering is provided by an electric power steering system, offering precise and responsive feel.
Market Reception & Comparison
The X3 30i was generally well-received by automotive critics, who praised its comfortable ride, refined interior, and balanced performance. Fuel economy was considered competitive for its class, with combined figures averaging around 32 mpg. Reliability has been generally good, although some owners have reported minor issues with the infotainment system and electrical components. Compared to rivals such as the Audi Q5 and Mercedes-Benz GLC, the X3 30i offered a compelling combination of features, performance, and value.
Legacy
The BMW X3 (G01) 30i xDrive Steptronic has proven to be a popular and reliable choice in the used car market. The B48 engine is known for its durability, and the eight-speed automatic transmission is generally considered to be very robust. With proper maintenance, these vehicles are expected to provide many years of trouble-free service. The G01 X3 represents a significant step forward in BMW’s SUV offerings, and the 30i variant continues to be a desirable option for buyers seeking a well-rounded and capable luxury SUV.
