The BMW 3 Series Touring (G21) 320d xDrive Steptronic, produced from June 2019 to February 2020, represents BMW’s entry into the premium compact executive wagon segment with a diesel powertrain and all-wheel drive. Positioned as a practical and efficient option within the broader G21 3 Series Touring lineup, it offered a balance between performance, fuel economy, and cargo capacity. This variant was designed to appeal to buyers seeking a versatile vehicle for both daily commuting and longer journeys, particularly in European markets where wagons maintain significant popularity. The 320d xDrive Steptronic utilized BMW’s established xDrive all-wheel-drive system and a sophisticated 8-speed Steptronic automatic transmission, aiming to provide confident handling in various weather conditions.
Technical Specifications
| Brand | BMW |
| Model | 3 Series |
| Generation | 3 Series Touring (G21) |
| Type (Engine) | 320d (190 Hp) xDrive Steptronic |
| Start of production | June, 2019 |
| End of production | February, 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban | 5.2-5.4 l/100 km (45.2 – 43.6 US mpg, 54.3 – 52.3 UK mpg, 19.2 – 18.5 km/l) |
| Fuel consumption (economy) – extra urban | 4.3-4.7 l/100 km (54.7 – 50 US mpg, 65.7 – 60.1 UK mpg, 23.3 – 21.3 km/l) |
| Fuel consumption (economy) – combined | 4.6-4.9 l/100 km (51.1 – 48 US mpg, 61.4 – 57.6 UK mpg, 21.7 – 20.4 km/l) |
| CO2 emissions | 121-129 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.4 sec |
| Acceleration 0 – 62 mph | 7.4 sec |
| Acceleration 0 – 60 mph | 7 sec (Calculated) |
| Maximum speed | 225 km/h (139.81 mph) |
| Emission standard | Euro 6d – TEMP |
| Weight-to-power ratio | 8.6 kg/Hp, 115.9 Hp/tonne |
| Weight-to-torque ratio | 4.1 kg/Nm, 243.9 Nm/tonne |
| Power | 190 Hp @ 4000 rpm |
| Torque | 400 Nm @ 1750-2500 rpm (295.02 lb.-ft. @ 1750-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B47D20B |
| Engine displacement | 1995 cm3 (121.74 cu. in.) |
| Number of cylinders | 4 |
| 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 | 5.5 l (5.81 US qt | 4.84 UK qt) |
| Coolant | 7 l (7.4 US qt | 6.16 UK qt) |
| Kerb Weight | 1640 kg (3615.58 lbs.) |
| Max. weight | 2255 kg (4971.42 lbs.) |
| Max load | 615 kg (1355.84 lbs.) |
| Trunk (boot) space – minimum | 500 l (17.66 cu. ft.) |
| Trunk (boot) space – maximum | 1510 l (53.33 cu. ft.) |
| Fuel tank capacity | 40 l (10.57 US gal | 8.8 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4709 mm (185.39 in.) |
| Width | 1827 mm (71.93 in.) |
| Width including mirrors | 2068 mm (81.42 in.) |
| Height | 1445 mm (56.89 in.) |
| Wheelbase | 2851 mm (112.24 in.) |
| Front track | 1573 mm (61.93 in.) |
| Rear (Back) track | 1567 mm (61.69 in.) |
| Front overhang | 799 mm (31.46 in.) |
| Rear overhang | 1059 mm (41.69 in.) |
| Ride height (ground clearance) | 135 mm (5.31 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle | 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 | Independent coil spring |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
Powertrain & Engine Architecture
The 320d xDrive Steptronic is powered by BMW’s B47D20B 2.0-liter inline-four cylinder diesel engine. This engine is a member of BMW’s modular engine family, known for its efficiency and refinement. The B47 utilizes a common-rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. A twin-scroll turbocharger with intercooling further enhances performance and reduces turbo lag. The engine produces 190 horsepower at 4,000 rpm and 400 Nm (295 lb-ft) of torque between 1,750 and 2,500 rpm. The engine also incorporates BMW’s BlueEfficiency technologies, including automatic start-stop and regenerative braking, to minimize fuel consumption. The engine is longitudinally mounted, driving all four wheels through BMW’s xDrive all-wheel-drive system. The xDrive system is primarily rear-wheel drive biased, intelligently distributing torque to the front wheels when traction is needed. The engine is paired with an 8-speed Steptronic automatic transmission, offering smooth and quick gear changes. This transmission features adaptive shift programs that adjust to the driver’s style and road conditions.
Driving Characteristics
The 320d xDrive Steptronic delivers a comfortable and composed driving experience. While not overtly sporty, the 190 hp engine provides adequate power for everyday driving and overtaking maneuvers. The 8-speed automatic transmission is well-tuned, providing seamless gear changes and contributing to the car’s overall refinement. The xDrive all-wheel-drive system enhances traction, particularly in wet or slippery conditions. Compared to the more powerful 330i variants, the 320d offers less outright acceleration, but its higher torque output at lower engine speeds makes it feel responsive in typical driving situations. Compared to manual transmission versions of the 320d, the Steptronic automatic prioritizes convenience and ease of use, although it may slightly diminish driver engagement. The gear ratios are optimized for fuel efficiency, with higher gears providing relaxed cruising at highway speeds.
Equipment & Trim Levels
The 320d xDrive Steptronic typically came equipped with a generous level of standard features. These included BMW’s iDrive infotainment system with a central touchscreen display, automatic climate control, power-adjustable front seats, and a leather-wrapped steering wheel. Standard safety features included automatic emergency braking, lane departure warning, and a rearview camera. Optional extras included a premium sound system, a head-up display, adaptive cruise control, and a panoramic sunroof. Interior upholstery was typically a combination of cloth and leatherette, with full leather options available as an upgrade. Trim levels varied slightly depending on the market, but generally offered a range of cosmetic and convenience enhancements.
Chassis & Braking
The G21 3 Series Touring features a sophisticated chassis design. The front suspension utilizes independent coil springs and struts, while the rear suspension employs a multi-link setup. This configuration provides a good balance between ride comfort and handling precision. The 320d xDrive Steptronic is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The braking system is assisted by ABS (Anti-lock Braking System), electronic brakeforce distribution, and brake assist. The steering system is an electric power-assisted rack and pinion system, offering precise and responsive steering feel.
Market Reception & Comparison
The 320d xDrive Steptronic was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and practical wagon body style. Critics noted that while it wasn’t the most exciting car to drive, it offered a compelling combination of attributes for buyers seeking a versatile and efficient premium wagon. Compared to other trims in the 3 Series lineup, the 320d xDrive Steptronic offered a more affordable entry point into the model range, while still providing a high level of equipment and refinement. Its fuel economy was notably better than the gasoline-powered 330i, making it a popular choice for drivers who prioritize efficiency.
Legacy
The B47 engine, used in the 320d xDrive Steptronic, has proven to be a relatively reliable powertrain. While some early examples experienced issues with timing chain wear, these were largely addressed through updated engine components. The 8-speed Steptronic automatic transmission is also known for its durability. Today, used examples of the 320d xDrive Steptronic represent a good value proposition for buyers seeking a practical and efficient premium wagon. Maintenance costs are generally reasonable, and parts availability is good. The car’s all-wheel-drive system and comfortable ride make it a suitable choice for a wide range of driving conditions.
