The BMW 3 Series Sedan (F30) 320d, producing 184 horsepower, represents a significant iteration of BMW’s iconic sports sedan, manufactured between 2011 and 2015. Positioned as a core model within the F30 generation (which spanned 2011-2019), the 320d aimed to balance fuel efficiency with respectable performance, appealing to a broad customer base. It served as an entry point into the 3 Series range for many European buyers, offering a diesel-powered alternative to the gasoline-fueled 320i and higher-performance models like the 335i. In the US market, diesel 3 Series models were less common, but the F30 320d offered a compelling option for those prioritizing fuel economy and torque.
Technical Specifications
| Brand | BMW |
| Model | 3 Series |
| Generation | 3 Series Sedan (F30) |
| Type (Engine) | 320d (184 Hp) |
| Start of production | 2011 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 5.8 l/100 km (40.6 US mpg, 48.7 UK mpg, 17.2 km/l) |
| Fuel consumption (extra urban) | 3.8 l/100 km (61.9 US mpg, 74.3 UK mpg, 26.3 km/l) |
| Fuel consumption (combined) | 4.5 l/100 km (52.3 US mpg, 62.8 UK mpg, 22.2 km/l) |
| CO2 emissions | 119 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.5 sec |
| Acceleration 0 – 62 mph | 7.5 sec |
| Acceleration 0 – 60 mph | 7.1 sec |
| Maximum speed | 235 km/h (146.02 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 7.7 kg/Hp, 129.6 Hp/tonne |
| Weight-to-torque ratio | 3.7 kg/Nm, 267.6 Nm/tonne |
| Power | 184 Hp @ 4000 rpm |
| Torque | 380 Nm @ 1750-2750 rpm (280.27 lb.-ft. @ 1750-2750 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N47D20C |
| 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 | 5.2 l (5.49 US qt | 4.58 UK qt) |
| Coolant | 7 l (7.4 US qt | 6.16 UK qt) |
| Kerb Weight | 1420 kg (3130.56 lbs.) |
| Max. weight | 1970 kg (4343.11 lbs.) |
| Max load | 550 kg (1212.54 lbs.) |
| Trunk (boot) space – minimum | 480 l (16.95 cu. ft.) |
| Fuel tank capacity | 57 l (15.06 US gal | 12.54 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1600 kg (3527.4 lbs.) |
| Permitted trailer load without brakes | 745 kg (1642.44 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4624 mm (182.05 in.) |
| Width | 1811 mm (71.3 in.) |
| Height | 1429 mm (56.26 in.) |
| Wheelbase | 2810 mm (110.63 in.) |
| Front track | 1543 mm (60.75 in.) |
| Rear (Back) track | 1583 mm (62.32 in.) |
| Ride height (ground clearance) | 140 mm (5.51 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle (turning diameter) | 11.3 m (37.07 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| 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 | 205/60 R16 92W |
| Wheel rims size | 7J x 16 |
Powertrain & Engine Architecture
The heart of the F30 320d is the N47D20C engine, a 2.0-liter inline-four cylinder diesel. This engine is a product of BMW’s extensive diesel technology development, featuring common-rail direct injection and a single twin-scroll turbocharger. The N47 series, introduced in 2007, was known for its efficiency and refinement. The ‘C’ designation indicates a specific refinement of the engine, optimized for emissions compliance. The engine utilizes four valves per cylinder and a sophisticated variable valve timing system (Double-VANOS) to optimize performance and fuel economy across the rev range. The 320d typically came equipped with a six-speed manual transmission, but an eight-speed automatic transmission (ZF 8HP) was also available, and became increasingly popular. The automatic transmission contributed to improved fuel efficiency and smoother driving experience.
Driving Characteristics
The 184 hp and 380 Nm (280 lb-ft) of torque delivered by the N47D20C engine provided a respectable, if not exhilarating, driving experience. Acceleration from 0-60 mph took around 7.1-7.5 seconds, depending on the transmission and specific vehicle configuration. The engine’s peak torque was available from a low 1750 rpm, providing strong pulling power for everyday driving and overtaking maneuvers. Compared to the more powerful 335i models, the 320d lacked outright speed, but its torque-rich engine made it feel responsive and effortless in typical driving situations. The manual transmission offered a more engaging driving experience, while the automatic provided convenience and efficiency. The automatic’s gear ratios were tuned for fuel economy, sometimes resulting in slightly less responsive acceleration compared to the manual.
Equipment & Trim Levels
The F30 320d typically came standard with features such as automatic climate control, power windows, power mirrors, and a basic audio system. Higher trim levels, such as Sport Line, Luxury Line, and Modern Line, added features like sport seats, upgraded interior trim, and larger alloy wheels. Optional extras included navigation systems, premium audio systems, leather upholstery, and advanced driver-assistance systems like lane departure warning and adaptive cruise control. Interior upholstery was typically cloth in base models, with leather options available. The dashboard layout was modern and driver-focused, with a clear instrument cluster and intuitive controls.
Chassis & Braking
The F30 3 Series featured a sophisticated chassis design, with a MacPherson strut front suspension and a multi-link rear suspension. This setup provided a good balance of ride comfort and handling precision. The 320d models typically came 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 320d still offered a sporty driving experience, particularly with the optional Sport suspension package.
Market Reception & Comparison
The F30 320d was generally well-received by automotive critics, who praised its fuel efficiency, refined engine, and comfortable ride. It was often compared to its competitors, such as the Audi A4 TDI and Mercedes-Benz C220 CDI. The 320d typically offered a more engaging driving experience than its rivals, but the Audi A4 TDI was often praised for its interior quality. In terms of reliability, the N47 engine had some known issues with timing chain wear, which could lead to costly repairs. However, these issues were often addressed with updated parts and software revisions. Fuel economy was a major selling point for the 320d, consistently achieving over 50 mpg on the combined cycle.
Legacy
The F30 320d remains a popular choice in the used car market, particularly in Europe where diesel engines are more prevalent. The N47 engine, despite its potential timing chain issues, is generally considered to be a durable and reliable unit when properly maintained. The F30 generation 3 Series is known for its blend of performance, efficiency, and practicality, making it a versatile and appealing vehicle for a wide range of buyers. The 320d variant continues to offer a compelling value proposition for those seeking a fuel-efficient and well-equipped sports sedan.
