The BMW 3 Series Coupe (E92 LCI), specifically the 330d variant with the Steptronic automatic transmission, represents a refined and performance-oriented offering within the broader E92 generation. Produced from 2010 to 2013, this facelifted model (LCI stands for Lebenszyklusimpuls, or Life Cycle Impulse in German) built upon the success of the original E92 coupe, introducing updated styling, improved efficiency, and enhanced technology. The 330d Steptronic occupied a mid-to-upper position in the 3 Series Coupe lineup, appealing to drivers seeking a balance of performance, luxury, and fuel economy. It served as a popular alternative to the petrol-powered 335i, offering comparable performance with significantly improved fuel consumption, particularly attractive in European markets where diesel fuel was more prevalent and often less expensive.
Technical Specifications
| Brand | BMW |
| Model | 3 Series |
| Generation | 3 Series Coupe (E92 LCI, facelift 2010) |
| Type (Engine) | 330d (245 Hp) Steptronic |
| Start of production | 2010 |
| End of production | 2013 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 8 l/100 km (29.4 US mpg, 35.3 UK mpg, 12.5 km/l) |
| Fuel consumption (extra urban) | 5.2 l/100 km (45.2 US mpg, 54.3 UK mpg, 19.2 km/l) |
| Fuel consumption (combined) | 6.2 l/100 km (37.9 US mpg, 45.6 UK mpg, 16.1 km/l) |
| CO2 emissions | 164 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.1 sec |
| Acceleration 0 – 62 mph | 6.1 sec |
| Acceleration 0 – 60 mph | 5.8 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 6.3 kg/Hp, 159.1 Hp/tonne |
| Weight-to-torque ratio | 3 kg/Nm, 337.7 Nm/tonne |
| Power | 245 Hp @ 4000 rpm |
| Power per litre | 81.9 Hp/l |
| Torque | 520 Nm @ 1750-3000 rpm (383.53 lb.-ft. @ 1750-3000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N57D30OL |
| 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 | Turbocharger, Intercooler |
| Engine oil capacity | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Coolant | 7.9 l (8.35 US qt | 6.95 UK qt) |
| Kerb Weight | 1540 kg (3395.12 lbs.) |
| Max. weight | 2020 kg (4453.34 lbs.) |
| Max load | 480 kg (1058.22 lbs.) |
| Trunk (boot) space – minimum | 440 l (15.54 cu. ft.) |
| Fuel tank capacity | 61 l (16.11 US gal | 13.42 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 | 4612 mm (181.57 in.) |
| Width | 1782 mm (70.16 in.) |
| Width including mirrors | 1961 mm (77.2 in.) |
| Height | 1395 mm (54.92 in.) |
| Wheelbase | 2760 mm (108.66 in.) |
| Front track | 1500 mm (59.06 in.) |
| Rear (Back) track | 1513 mm (59.57 in.) |
| Ride height (ground clearance) | 143 mm (5.63 in.) |
| Drag coefficient (Cd) | 0.28 |
| Minimum turning circle (turning diameter) | 11.0 m (36.09 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Front suspension | Independent coil spring |
| Rear suspension | McPherson |
| 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 | 225/45 R17 91W |
| Wheel rims size | 8J x 17 |
Powertrain & Engine Architecture
The heart of the 330d Steptronic is the N57D30OL inline-six diesel engine. This engine is a direct descendant of BMW’s highly regarded M57 series of diesels, but incorporates significant advancements in technology. The N57 featured a common-rail direct injection system operating at pressures up to 1,800 bar, enabling finer fuel atomization and more efficient combustion. A variable geometry turbocharger (VGT) with intercooling further enhanced performance and responsiveness. The engine also employed four valves per cylinder and a sophisticated engine management system to optimize power delivery and minimize emissions. The ‘OL’ suffix denotes a specific calibration for the automatic transmission. The six-speed Steptronic automatic transmission was a conventional torque-converter type, offering smooth shifts and a comfortable driving experience. It featured adaptive shift programs that adjusted to the driver’s style and road conditions.
Driving Characteristics
The 330d Steptronic delivered a compelling blend of performance and efficiency. With 245 horsepower and a substantial 520 Nm (383 lb-ft) of torque available from just 1750 rpm, the coupe offered strong acceleration in everyday driving situations. The automatic transmission, while not as sporty as the available six-speed manual, provided seamless gear changes and contributed to a relaxed cruising experience. Compared to the 320d, the 330d offered a noticeable performance upgrade, while remaining more fuel-efficient than the 335i. The automatic transmission’s gear ratios were tuned for a balance of acceleration and fuel economy, prioritizing smooth transitions over outright performance. While the manual transmission offered more driver engagement, the Steptronic provided a more accessible and convenient driving experience for many buyers.
Equipment & Trim Levels
The 330d Steptronic typically came well-equipped as standard. Interior features included leather upholstery, power-adjustable front seats, automatic climate control, and a high-quality audio system. The LCI facelift brought subtle interior revisions, including updated trim materials and improved infotainment system graphics. Optional extras were plentiful, including navigation, premium sound systems (Harman Kardon), sport seats, and various driver assistance features like parking sensors and adaptive headlights. Exterior options included different wheel designs, metallic paint finishes, and a sunroof.
Chassis & Braking
The E92 3 Series Coupe featured a sophisticated chassis design. The front suspension utilized independent coil springs and struts, while the rear employed a multi-link setup. This configuration provided a good balance of ride comfort and handling precision. The 330d Steptronic was equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control (ESC) were standard safety features. The suspension tuning was generally geared towards comfort, but the coupe still offered a reasonably engaging driving experience, particularly on winding roads.
Market Reception & Comparison
The 330d Steptronic was generally well-received by automotive critics. It was praised for its strong performance, excellent fuel economy, and refined driving experience. Compared to the 320d, the 330d offered a significant power boost without sacrificing fuel efficiency. Against the 335i, the 330d provided a more economical alternative, although it lacked the ultimate performance of the petrol-powered variant. Reliability was generally good, although some owners reported issues with the diesel particulate filter (DPF) and turbocharger over the long term.
Legacy
The N57 engine family, including the N57D30OL variant found in the 330d, has proven to be remarkably durable. Well-maintained examples continue to provide reliable service today. On the used car market, the E92 330d Steptronic remains a popular choice for buyers seeking a stylish, comfortable, and efficient coupe. Its combination of performance, luxury, and fuel economy has ensured its enduring appeal. However, potential buyers should be aware of the potential for DPF issues and the importance of regular maintenance to ensure long-term reliability.
