The BMW E91 320d Touring, produced from 2007 to 2008, represents BMW’s entry into the compact executive wagon segment with a diesel powertrain. Part of the E90 3 Series generation (internally designated as the F3x following the 2011 LCI), the E91 offered a practical alternative to the sedan, combining BMW’s renowned driving dynamics with increased cargo capacity. The 320d variant, equipped with the Steptronic automatic transmission and a Diesel Particulate Filter (DPF), was positioned as a fuel-efficient and comfortable option within the 3 Series Touring lineup, appealing to buyers prioritizing economy and usability over outright performance.
Technical Specifications
| Brand | BMW |
| Model | 3 Series |
| Generation | 3 Series Touring (E91) |
| Type (Engine) | 320d (177 Hp) Steptronic DPF |
| Start of production | 2007 |
| End of production | 2008 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7.3 l/100 km (32.2 US mpg, 38.7 UK mpg, 13.7 km/l) |
| Fuel consumption (extra urban) | 4.6 l/100 km (51.1 US mpg, 61.4 UK mpg, 21.7 km/l) |
| Fuel consumption (combined) | 5.6 l/100 km (42 US mpg, 50.4 UK mpg, 17.9 km/l) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8.3 sec |
| Acceleration 0 – 62 mph | 8.3 sec |
| Acceleration 0 – 60 mph | 7.9 sec |
| Maximum speed | 226 km/h (140.43 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 9 kg/Hp, 111 Hp/tonne |
| Weight-to-torque ratio | 4.6 kg/Nm, 219.4 Nm/tonne |
| Power | 177 Hp @ 4000 rpm |
| Power per litre | 88.7 Hp/l |
| Torque | 350 Nm @ 1750 rpm (258.15 lb.-ft. @ 1750 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 | 17:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 5.2 l (5.49 US qt | 4.58 UK qt) |
| Coolant | 7.9 l (8.35 US qt | 6.95 UK qt) |
| Kerb Weight | 1595 kg (3516.37 lbs.) |
| Max. weight | 2060 kg (4541.52 lbs.) |
| Max load | 465 kg (1025.15 lbs.) |
| Trunk (boot) space – minimum | 460 l (16.24 cu. ft.) |
| Trunk (boot) space – maximum | 1385 l (48.91 cu. ft.) |
| Fuel tank capacity | 61 l (16.11 US gal | 13.42 UK gal) |
| Length | 4520 mm (177.95 in.) |
| Width | 1817 mm (71.54 in.) |
| Height | 1418 mm (55.83 in.) |
| Wheelbase | 2760 mm (108.66 in.) |
| Front track | 1506 mm (59.29 in.) |
| Rear (Back) track | 1525 mm (60.04 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Front suspension | Spring Strut |
| Rear suspension | Coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Tires size | 205/55 R16 |
| Wheel rims size | 16 |
Powertrain & Engine Architecture
The heart of the E91 320d Touring is the N47D20C, a 2.0-liter inline-four diesel engine. This engine was a significant step forward for BMW, utilizing second-generation common rail direct injection technology operating at pressures up to 1,600 bar. This high-pressure injection, coupled with a variable geometry turbocharger and intercooler, allowed for a good balance of power and efficiency. The N47 featured four valves per cylinder and a single overhead camshaft. The engine’s block was constructed from cast iron, while the cylinder head was aluminum. The Steptronic automatic transmission, a six-speed unit, was specifically tuned to complement the engine’s torque characteristics. It offered both fully automatic operation and a manual shift mode for greater driver control. A particulate filter (DPF) was standard equipment, reducing emissions to meet Euro 4 standards.
Driving Characteristics
The 177 horsepower and 350 Nm (258 lb-ft) of torque delivered by the N47D20C in the E91 320d Touring provided adequate performance for everyday driving. Acceleration from 0-60 mph took around 7.9 seconds, and top speed was rated at 140 mph. While not as quick as the 335i or even the 325i variants, the 320d offered a smooth and refined driving experience. The automatic transmission, while generally responsive, could sometimes feel hesitant during quick downshifts. The engine’s torque was readily available from low RPMs, making it well-suited for overtaking and cruising on the highway. Compared to the six-speed manual version, the automatic offered greater convenience, but at the expense of some driver engagement and slightly reduced fuel economy.
Equipment & Trim Levels
The E91 320d Touring typically came standard with features such as automatic climate control, power windows, power mirrors, and a basic audio system. Upholstery was usually cloth, although leather options were available. Common optional extras included a sunroof, navigation system, upgraded audio, parking sensors, and sport seats. Trim levels varied depending on the market, but generally, the 320d sat in the mid-range of the Touring lineup, offering a good balance of features and price. The ‘Sport’ package added aesthetic enhancements like sport suspension, unique alloy wheels, and interior trim.
Chassis & Braking
The E91 320d Touring utilized a MacPherson strut front suspension and a multi-link rear suspension, providing a comfortable yet controlled ride. The chassis was designed to minimize body roll and maximize stability. The braking system consisted of ventilated discs at the front and solid discs at the rear. Anti-lock brakes (ABS) were standard, along with Electronic Brake-force Distribution (EBD). The suspension was tuned to accommodate the added weight of the wagon body style, and stabilizer bars were used to further reduce body roll during cornering.
Market Reception & Comparison
The E91 320d Touring was generally well-received by automotive critics. It was praised for its fuel efficiency, spacious interior, and comfortable ride. However, some reviewers noted that the automatic transmission could be slow to respond at times. Compared to the more powerful 335i Touring, the 320d offered significantly lower running costs but lacked the same level of performance. Against competitors like the Audi A4 Avant and Volvo V60, the BMW 320d Touring stood out for its engaging driving dynamics and premium feel. Fuel economy was a key selling point, with the 320d consistently achieving impressive MPG figures in real-world testing.
Legacy
The N47 engine family, including the N47D20C found in the E91 320d Touring, became one of BMW’s most widely used diesel engines. While generally reliable, the N47 has been known to experience issues with the timing chain tensioner, which can lead to engine damage if not addressed. Despite this potential issue, the E91 320d Touring remains a popular choice in the used car market, particularly for buyers seeking a practical, fuel-efficient, and well-built wagon. Its combination of BMW’s driving dynamics and the versatility of a station wagon continues to appeal to a wide range of drivers.
