The BMW 3 Series Touring (F31) 320d EfficientDynamics Edition Steptronic, produced from 2013 to 2015, represents a compelling blend of practicality, fuel efficiency, and BMW’s signature driving dynamics within the F31 wagon body style. Positioned as a mid-range offering in the 3 Series Touring lineup, this variant catered to buyers seeking a balance between performance and economy. It was a key model in BMW’s strategy to offer a diverse range of options within the popular 3 Series, appealing to families and individuals needing a versatile vehicle without sacrificing the BMW experience. The “EfficientDynamics” designation highlights BMW’s focus on maximizing fuel economy through various engineering enhancements.
Technical Specifications
| Brand | BMW |
| Model | 3 Series |
| Generation | 3 Series Touring (F31) |
| Type | 320d (163 Hp) EfficientDynamics Edition Steptronic |
| Start of production | 2013 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 5.1 l/100 km (46.1 US mpg, 55.4 UK mpg, 19.6 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) | 4.3 l/100 km (54.7 US mpg, 65.7 UK mpg, 23.3 km/l) |
| CO2 emissions | 112 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8.2 sec |
| Acceleration 0 – 62 mph | 8.2 sec |
| Acceleration 0 – 60 mph | 7.8 sec |
| Maximum speed | 222 km/h (137.94 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 9.3 kg/Hp, 107.9 Hp/tonne |
| Weight-to-torque ratio | 4 kg/Nm, 251.7 Nm/tonne |
| Power | 163 Hp @ 4000 rpm |
| Power per litre | 81.7 Hp/l |
| 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 | 1510 kg (3328.98 lbs.) |
| Max. weight | 2060 kg (4541.52 lbs.) |
| Max load | 550 kg (1212.54 lbs.) |
| Trunk (boot) space – minimum | 495 l (17.48 cu. ft.) |
| Trunk (boot) space – maximum | 1500 l (52.97 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 | 1416 mm (55.75 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) | 127 mm (5 in.) |
| Drag coefficient (Cd) | 0.30 |
| Minimum turning circle (turning diameter) | 11.3 m (37.07 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| 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 | Disc |
| 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 |
INTRODUCTION
The F31 320d EfficientDynamics Edition Steptronic, launched in 2013, was a key component of BMW’s strategy to offer a fuel-efficient and practical option within the 3 Series Touring range. Built on the 1HX0/A3 platform, this variant aimed to deliver a balance between performance, economy, and everyday usability. The EfficientDynamics package included various modifications designed to reduce fuel consumption and emissions, making it an attractive choice for environmentally conscious buyers. It occupied a middle ground in the 3 Series Touring lineup, offering a step up from the base models while remaining more accessible than the higher-performance variants like the 335i.
Powertrain & Engine Architecture
At the heart of the 320d EfficientDynamics Edition lies the N47D20C 2.0-liter inline-four diesel engine. This engine is a hallmark of BMW’s diesel technology, known for its robust construction and efficiency. The N47D20C utilizes a second-generation common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. A twin-scroll turbocharger with variable geometry turbine (VGT) technology further enhances performance and responsiveness. The engine also features an intercooler to cool the intake air, increasing its density and improving power output. Paired with this engine is BMW’s 8-speed Steptronic automatic transmission. This transmission is renowned for its smooth shifts and intelligent programming, contributing to both fuel efficiency and driving comfort. The transmission features adaptive shift patterns, adjusting to the driver’s style and road conditions.
Driving Characteristics
The 163 horsepower and 380 Nm (280 lb-ft) of torque produced by the N47D20C engine provide adequate performance for everyday driving. Acceleration from 0 to 60 mph takes approximately 7.8 seconds, and the car has a top speed of 137.94 mph. While not as quick as the more powerful 3 Series variants, the 320d offers a smooth and refined driving experience. The 8-speed automatic transmission plays a crucial role in maximizing efficiency, keeping the engine in its optimal power band. The gear ratios are well-spaced, providing responsive acceleration in most situations. Compared to the manual transmission versions, the Steptronic automatic offers greater convenience, particularly in urban traffic. However, some enthusiasts may find the automatic slightly less engaging than the manual counterpart.
Equipment & Trim Levels
The 320d EfficientDynamics Edition Steptronic came standard with a comprehensive list of features. Interior appointments typically included cloth upholstery, although leather options were available. The dashboard featured BMW’s iDrive infotainment system with a central display screen. Standard equipment also included automatic climate control, power windows, and power mirrors. The “EfficientDynamics” package added specific features aimed at improving fuel economy, such as aerodynamic enhancements and low-rolling-resistance tires. Optional extras included a sunroof, navigation system, upgraded audio system, and parking sensors. Trim levels could vary slightly depending on the market, but generally, the 320d EfficientDynamics Edition occupied a mid-range position, offering a good balance of features and value.
Chassis & Braking
The F31 320d utilizes a sophisticated chassis design. The front suspension features independent coil springs and struts, while the rear suspension employs an independent multi-link setup. This configuration provides a comfortable ride and precise handling. The steering is a rack-and-pinion system with electric power assistance, offering a responsive and accurate feel. Braking duties are handled by ventilated discs at the front and solid discs at the rear. The car is equipped with ABS (Anti-lock Braking System) and electronic stability control, enhancing safety and control. The suspension tuning is geared towards comfort and everyday usability, rather than outright sportiness, but still provides a confident and stable driving experience.
Market Reception & Comparison
The 320d EfficientDynamics Edition Steptronic was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and refined driving experience. However, some reviewers noted that the engine lacked the outright punch of the more powerful 3 Series variants. Compared to the 328i (later 330i) and 335i models, the 320d offered significantly lower running costs but less exhilarating performance. Against other diesel-powered competitors, such as the Audi A4 Avant TDI and Volkswagen Passat Variant TDI, the 320d held its own in terms of fuel economy and driving dynamics. Its reputation for reliability was generally positive, although some owners reported issues with the timing chain on the N47 engine.
Legacy
The F31 320d EfficientDynamics Edition Steptronic remains a popular choice in the used car market. Its combination of practicality, fuel efficiency, and BMW’s brand reputation makes it an attractive option for buyers seeking a versatile and reliable wagon. The N47 engine, while generally robust, has been subject to some recalls and service bulletins related to the timing chain. Regular maintenance and adherence to BMW’s recommended service intervals are crucial for ensuring the long-term reliability of this powertrain. Today, these vehicles offer a compelling value proposition, providing a comfortable and efficient driving experience at a relatively affordable price point.
