The BMW X3 (G01) 30d xDrive Steptronic, produced from 2017 to August 2020, represents a significant iteration of BMW’s popular compact luxury Sports Activity Vehicle (SAV). Positioned as a mid-range offering within the G01 X3 lineup, the 30d combined a potent diesel engine with BMW’s sophisticated xDrive all-wheel-drive system and the Steptronic 8-speed automatic transmission. This variant aimed to balance performance, fuel efficiency, and practicality for buyers seeking a versatile premium SUV. It was a key model in the European market, where diesel engines remained highly favored, and also gained traction in other regions seeking efficient luxury.
Technical Specifications
| Brand | BMW |
| Model | X3 |
| Generation | X3 (G01) |
| Type (Engine) | 30d (265 Hp) xDrive Steptronic |
| Start of production | 2017 |
| End of production | August, 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SAV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 6.3-6.6 l/100 km (37.3 – 35.6 US mpg, 44.8 – 42.8 UK mpg, 15.9 – 15.2 km/l) |
| Fuel consumption (extra urban) | 5.3-5.7 l/100 km (44.4 – 41.3 US mpg, 53.3 – 49.6 UK mpg, 18.9 – 17.5 km/l) |
| Fuel consumption (combined) | 5.7-6.0 l/100 km (41.3 – 39.2 US mpg, 49.6 – 47.1 UK mpg, 17.5 – 16.7 km/l) |
| CO2 emissions | 149-158 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.8 sec |
| Acceleration 0 – 62 mph | 5.8 sec |
| Acceleration 0 – 60 mph | 5.5 sec |
| Maximum speed | 240 km/h (149.13 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 6.9 kg/Hp, 145.6 Hp/tonne |
| Weight-to-torque ratio | 2.9 kg/Nm, 340.7 Nm/tonne |
| Power | 265 Hp @ 4000 rpm |
| Power per litre | 88.5 Hp/l |
| Torque | 620 Nm @ 2000-2500 rpm (457.29 lb.-ft. @ 2000-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B57D30A |
| 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 | Twin-power turbo, Intercooler |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 10 l (10.57 US qt | 8.8 UK qt) |
| Kerb Weight | 1820 kg (4012.41 lbs.) |
| Max. weight | 2500 kg (5511.56 lbs.) |
| Max load | 680 kg (1499.14 lbs.) |
| Trunk (boot) space – minimum | 550 l (19.42 cu. ft.) |
| Trunk (boot) space – maximum | 1600 l (56.5 cu. ft.) |
| Fuel tank capacity | 68 l (17.96 US gal | 14.96 UK gal) |
| Max. roof load | 100 kg (220.46 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.) |
| Height | 1676 mm (65.98 in.) |
| Wheelbase | 2864 mm (112.76 in.) |
| Front track | 1620 mm (63.78 in.) |
| Rear (Back) track | 1636 mm (64.41 in.) |
| Ride height (ground clearance) | 204 mm (8.03 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle (turning diameter) | 12.0 m (39.37 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
Powertrain & Engine Architecture
The heart of the X3 30d is BMW’s B57D30A 3.0-liter inline-six diesel engine. This engine is a member of the modular BMW engine family, known for its robust construction and sophisticated technology. The B57 features a cast iron block, aluminum cylinder head, and four valves per cylinder. It employs a second-generation common rail direct fuel injection system operating at extremely high pressures (2,200 bar) for optimized combustion and reduced emissions. A key feature is the twin-scroll turbocharger with variable geometry turbine (VGT) technology, which minimizes turbo lag and delivers strong torque across a wide RPM range. The engine also incorporates an intercooler to further enhance performance. Paired with the engine is the ZF 8HP80 eight-speed automatic transmission, marketed by BMW as “Steptronic.” This transmission is renowned for its smooth shifts, efficiency, and adaptability. It offers both automatic and manual shift modes, allowing drivers to tailor the driving experience.
Driving Characteristics
The X3 30d xDrive Steptronic delivers a refined and capable driving experience. The 620 Nm (457 lb-ft) of torque available from 2000-2500 rpm provides strong acceleration, making overtaking effortless. While not as overtly sporty as the X3 M40i, the 30d offers a more than adequate 0-60 mph time of around 5.5 seconds. The eight-speed automatic transmission contributes to smooth gear changes and helps keep the engine in its optimal power band. The xDrive all-wheel-drive system provides excellent traction in various conditions, enhancing stability and confidence. Compared to the six-cylinder gasoline X3 30i, the 30d prioritizes fuel economy and low-end torque. Manual transmission versions, while available in some markets, were less common and offered a more engaging, but less relaxed, driving experience.
Equipment & Trim Levels
The X3 30d typically came well-equipped, reflecting its position as a premium SUV. Standard features included leather upholstery, power-adjustable front seats with memory function, a BMW iDrive infotainment system with a central display screen, automatic climate control, and a suite of safety features like automatic emergency braking and lane departure warning. Optional extras included a panoramic sunroof, upgraded audio systems (Harman Kardon), adaptive cruise control, and various driver assistance packages. Trim levels varied by market, but generally offered options for enhanced interior finishes, exterior styling elements, and additional technology features.
Chassis & Braking
The G01 X3 utilizes a robust chassis with a double-wishbone front suspension and an independent multi-link rear suspension. This setup provides a comfortable ride while maintaining good handling characteristics. The X3 30d typically featured ventilated disc brakes on all four wheels, providing ample stopping power. The braking system was often paired with ABS (Anti-lock Braking System), Dynamic Stability Control (DSC), and other electronic aids to enhance safety. Stabilizer bars were fitted front and rear to reduce body roll during cornering.
Market Reception & Comparison
The X3 30d was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, spacious interior, and practical features. The diesel engine’s fuel efficiency was a major selling point, particularly in Europe. Compared to the X3 30i (gasoline), the 30d offered superior fuel economy and torque, but slightly less outright performance. Against competitors like the Audi Q5 and Mercedes-Benz GLC, the X3 30d was often considered a strong contender, offering a compelling blend of luxury, performance, and practicality.
Legacy
The B57 engine family, including the B57D30A found in the X3 30d, has proven to be remarkably reliable. With proper maintenance, these engines can accumulate high mileage without major issues. The ZF 8HP80 transmission is also known for its durability. On the used car market, the X3 30d remains a popular choice, particularly for buyers seeking a fuel-efficient and capable luxury SUV. However, potential buyers should be aware of the potential costs associated with diesel emissions systems and ensure that the vehicle has been properly maintained.
