The BMW 3 Series Touring (G21) 330i xDrive Steptronic, produced from June 2019 to 2022, represents BMW’s sixth generation of the 3 Series Touring, a compact executive estate. Positioned as a mid-to-high range offering within the G21 lineup, it combines a potent turbocharged four-cylinder engine with BMW’s xDrive all-wheel-drive system and an eight-speed Steptronic automatic transmission. This variant aimed to deliver a blend of performance, practicality, and all-weather capability, appealing to buyers seeking a dynamic driving experience in a versatile package. The G21 generation marked a significant evolution for the 3 Series Touring, incorporating advancements in chassis technology, driver assistance systems, and interior refinement.
Technical Specifications
| Brand | BMW |
| Model | 3 Series |
| Generation | 3 Series Touring (G21) |
| Type | 330i (258 Hp) xDrive Steptronic |
| Start of production | June, 2019 |
| End of production | 2022 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7.6-7.9 l/100 km (30.9 – 29.8 US mpg, 37.2 – 35.8 UK mpg, 13.2 – 12.7 km/l) |
| Fuel consumption (extra urban) | 5.5-5.9 l/100 km (42.8 – 39.9 US mpg, 51.4 – 47.9 UK mpg, 18.2 – 16.9 km/l) |
| Fuel consumption (combined) | 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) |
| CO2 emissions | 143-151 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.8 sec |
| Acceleration 0 – 62 mph | 5.8 sec |
| Acceleration 0 – 60 mph | 5.5 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d – TEMP |
| Weight-to-power ratio | 6.4 kg/Hp, 157.3 Hp/tonne |
| Weight-to-torque ratio | 4.1 kg/Nm, 243.9 Nm/tonne |
| Power | 258 Hp @ 5000-6500 rpm |
| Power per litre | 129.1 Hp/l |
| Torque | 400 Nm @ 1550-4400 rpm (295.02 lb.-ft. @ 1550-4400 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 | Twin-power turbo, Intercooler |
| Engine oil capacity | 5.25 l (5.55 US qt | 4.62 UK qt) |
| Coolant | 9.8 l (10.36 US qt | 8.62 UK qt) |
| Kerb Weight | 1640 kg (3615.58 lbs.) |
| Max. weight | 2260 kg (4982.45 lbs.) |
| Max load | 620 kg (1366.87 lbs.) |
| Trunk (boot) space – minimum | 500 l (17.66 cu. ft.) |
| Trunk (boot) space – maximum | 1510 l (53.33 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 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) | 0.28 |
| 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 | Independent coil spring |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
Powertrain & Engine Architecture
At the heart of the 330i xDrive Touring lies BMW’s B48B20B 2.0-liter inline-four cylinder engine. This engine is a member of BMW’s modular engine family, utilizing a single-scroll, twin-scroll turbocharger with an intercooler to deliver 258 horsepower at 5000-6500 rpm and 400 Nm (295 lb-ft) of torque between 1550 and 4400 rpm. Direct fuel injection, operating at a maximum pressure of 350 bar, ensures precise fuel delivery for optimal combustion. The engine features Valvetronic variable valve timing and Double VANOS variable camshaft timing, contributing to both performance and efficiency. The engine is longitudinally mounted, powering all four wheels through BMW’s xDrive all-wheel-drive system. The xDrive system is typically rear-biased, enhancing the car’s dynamic handling characteristics. The eight-speed Steptronic automatic transmission is a torque-converter type, offering smooth and quick shifts. It features a wide gear ratio spread, optimizing both acceleration and fuel economy. Paddle shifters are included, allowing for manual gear selection when desired.
Driving Characteristics
The 330i xDrive Touring provides a refined and engaging driving experience. The 2.0-liter engine delivers ample power for everyday driving and confident overtaking maneuvers. The xDrive system provides excellent traction in various weather conditions, enhancing stability and control. The Steptronic transmission shifts smoothly and responsively, contributing to a comfortable ride. Compared to the 330i with a manual transmission, the automatic version offers slightly reduced acceleration due to shift losses, but provides greater convenience, especially in urban traffic. Compared to the more powerful 340i models, the 330i offers a more balanced driving experience, with less aggressive power delivery and a slightly lighter front-end feel. The gear ratios are tuned for a blend of performance and fuel efficiency, with taller gears for highway cruising and shorter gears for quicker acceleration.
Equipment & Trim Levels
The 330i xDrive Touring typically came well-equipped as standard. Interior features included BMW’s iDrive infotainment system with a touchscreen display, leather upholstery, power-adjustable front seats, and automatic climate control. 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. Trim levels varied by market, but generally offered options for upgraded interior materials, exterior styling enhancements, and additional driver assistance features. The Luxury trim package focused on comfort and refinement, while the Sport package emphasized a more dynamic driving experience with features like sport seats and a sport suspension.
Chassis & Braking
The G21 3 Series Touring utilizes a sophisticated chassis design. The front suspension features independent coil springs and struts, while the rear suspension employs a multi-link setup. This configuration provides a good balance of ride comfort and handling precision. The 330i xDrive Touring is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control (ESC) are standard features. The steering system is an electric power steering system, offering precise and responsive steering feel. The chassis is designed to minimize weight, contributing to improved handling and fuel efficiency.
Market Reception & Comparison
The 330i xDrive Touring was generally well-received by automotive critics. It was praised for its blend of performance, practicality, and refinement. The xDrive system was particularly appreciated for its ability to provide all-weather capability. Compared to other trims in the 3 Series lineup, the 330i offered a compelling value proposition, providing a significant amount of performance and features at a reasonable price point. Fuel economy was considered competitive for its class, and reliability was generally good, although some owners reported minor issues with the infotainment system. Compared to rivals such as the Audi A4 Avant and Mercedes-Benz C-Class Estate, the 330i xDrive Touring was often seen as the most engaging and driver-focused option.
Legacy
The BMW 3 Series Touring (G21) 330i xDrive Steptronic represents a well-rounded and capable estate car. The B48 engine, while not without its occasional issues (such as oil leaks in some early production units), has proven to be generally reliable. The eight-speed Steptronic transmission is also known for its durability. In the used car market, these models hold their value relatively well, particularly those with low mileage and a full service history. The G21 3 Series Touring continues to be a popular choice for buyers seeking a premium estate car that offers a blend of performance, practicality, and driving enjoyment.
