The BMW 3 Series Sedan (F30 LCI), specifically the 330i xDrive Steptronic variant, represents a significant evolution of BMW’s iconic sports sedan. Produced from 2015 to 2018, this facelifted version of the F30 generation brought updated styling, enhanced technology, and refined engine options. The 330i xDrive Steptronic occupied a mid-to-upper position within the 3 Series lineup, offering a balance of performance, luxury, and all-weather capability. It served as a popular choice for buyers seeking a premium sports sedan with the added security of BMW’s xDrive all-wheel-drive system and the convenience of an eight-speed automatic transmission.
Technical Specifications
| Brand | BMW |
| Model | 3 Series |
| Generation | 3 Series Sedan (F30 LCI, Facelift 2015) |
| Type | 330i (252 Hp) xDrive Steptronic |
| Start of production | 2015 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 7.8-7.5 l/100 km (30.2 – 31.4 US mpg) |
| Fuel consumption (extra urban) | 5.2-5.0 l/100 km (45.2 – 47 US mpg) |
| Fuel consumption (combined) | 6.2-5.9 l/100 km (37.9 – 39.9 US mpg) |
| CO2 emissions | 144-138 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 6 |
| Weight-to-power ratio | 6.2 kg/Hp, 161 Hp/tonne |
| Weight-to-torque ratio | 4.5 kg/Nm, 223.6 Nm/tonne |
| Power | 252 Hp @ 5200-6500 rpm |
| 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 | Twin-power turbo, Intercooler |
| Engine oil capacity | 5 l (5.28 US qt | 4.4 UK qt) |
| Coolant | 7.8 l (8.24 US qt | 6.86 UK qt) |
| Kerb Weight | 1565 kg (3450.23 lbs.) |
| Max. weight | 2115 kg (4662.78 lbs.) |
| Max load | 550 kg (1212.54 lbs.) |
| Trunk (boot) space – minimum | 480 l (16.95 cu. ft.) |
| Fuel tank capacity | 60 l (15.85 US gal | 13.2 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 | 4633 mm (182.4 in.) |
| Width | 1811 mm (71.3 in.) |
| Height | 1434 mm (56.46 in.) |
| Wheelbase | 2810 mm (110.63 in.) |
| Front track | 1531 mm (60.28 in.) |
| Rear (Back) track | 1570 mm (61.81 in.) |
| Ride height (ground clearance) | 145 mm (5.71 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle (turning diameter) | 11.7 m (38.39 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 |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/50 R17 94W |
| Wheel rims size | 7.5J x 17 |
Powertrain & Engine Architecture
The heart of the 330i xDrive Steptronic is BMW’s B48B20B 2.0-liter turbocharged inline-four engine. This engine is a member of BMW’s modular engine family, known for its efficiency and performance. The B48 utilizes direct fuel injection, a twin-scroll turbocharger, and variable valve timing (Valvetronic) and variable camshaft timing (Double VANOS) to optimize power delivery and fuel economy. The engine produces 252 horsepower at 5200-6500 rpm and 350 Nm (258 lb-ft) of torque between 1450 and 4800 rpm. This broad torque curve contributes to strong acceleration in everyday driving situations. The engine is paired with BMW’s eight-speed Steptronic automatic transmission, which offers smooth and quick shifts. The xDrive all-wheel-drive system intelligently distributes power between the front and rear axles, enhancing traction and stability, particularly in adverse weather conditions.
Driving Characteristics
The 330i xDrive Steptronic delivers a refined and engaging driving experience. While not as overtly sporty as the 340i or M3 models, the 2.0-liter turbo engine provides ample power for confident overtaking and spirited driving. The eight-speed automatic transmission is well-tuned, offering seamless gear changes and responsive kickdowns. The xDrive system provides excellent grip, inspiring confidence in corners and on slippery surfaces. Compared to the rear-wheel-drive 330i, the xDrive variant offers enhanced stability, but some purists may note a slight reduction in ultimate handling feel. The automatic transmission, while convenient, doesn’t offer the same level of driver engagement as the available six-speed manual transmission.
Equipment & Trim Levels
The 330i xDrive Steptronic came standard with a comprehensive list of features, including leatherette upholstery, automatic climate control, a 6.5-inch iDrive infotainment system, and a suite of safety features like ABS, stability control, and multiple airbags. Optional extras included leather upholstery, a larger iDrive screen with navigation, a premium sound system, a sunroof, and various driver-assistance systems such as lane departure warning and adaptive cruise control. Trim levels, such as Sport Line, Luxury Line, and M Sport, offered different styling cues and additional features.
Chassis & Braking
The F30 3 Series features a sophisticated chassis design with a MacPherson strut front suspension and a multi-link rear suspension. The 330i xDrive Steptronic typically came equipped with ventilated disc brakes on all four wheels, providing strong and consistent stopping power. The suspension tuning was geared towards a balance of comfort and handling, offering a compliant ride without sacrificing agility. The xDrive system adds weight compared to the rear-wheel-drive models, which slightly impacts handling dynamics.
Market Reception & Comparison
The 330i xDrive Steptronic was well-received by automotive critics, who praised its blend of performance, luxury, and all-weather capability. It was often seen as a sensible and practical choice for buyers who wanted a premium sports sedan without the higher price tag of the 340i or M3. Fuel economy was generally considered good for its class, and reliability was generally above average. Compared to the 320i, the 330i offered a significant performance upgrade, while the 340i provided even more power and a sportier driving experience.
Legacy
The B48 engine has proven to be a reliable and durable powerplant, and the 330i xDrive Steptronic remains a popular choice in the used car market. While some early B48 engines experienced issues with oil leaks, these were largely addressed with updated gaskets and seals. The eight-speed Steptronic transmission is also known for its reliability. Overall, the 330i xDrive Steptronic represents a well-rounded and capable sports sedan that continues to offer a compelling value proposition for buyers seeking a premium driving experience.
