The BMW 3 Series Touring (E46) facelift 320d Steptronic, produced from 2001 to 2005, represents a compelling blend of practicality and efficiency within the popular E46 generation. This variant, a diesel-powered station wagon (estate) equipped with a five-speed automatic transmission marketed as “Steptronic,” occupied a middle ground in the 3 Series Touring lineup, appealing to buyers seeking lower running costs and convenience without sacrificing the BMW driving experience. It was positioned below the more powerful 330d and petrol-powered models, and above the base 318d, offering a balance of performance and economy. The E46 facelift, introduced in 2001, brought subtle styling revisions, improved interior materials, and updated engine technology compared to the pre-facelift models.
Technical Specifications
| Brand | BMW |
| Model | 3 Series |
| Generation | 3 Series Touring (E46, facelift 2001) |
| Type (Engine) | 320d (150 Hp) Steptronic |
| Start of production | 2001 |
| End of production | 2005 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 9.7 l/100 km (24.2 US mpg, 29.1 UK mpg, 10.3 km/l) |
| Fuel consumption (extra urban) | 5.5 l/100 km (42.8 US mpg, 51.4 UK mpg, 18.2 km/l) |
| Fuel consumption (combined) | 7.1 l/100 km (33.1 US mpg, 39.8 UK mpg, 14.1 km/l) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 9.5 sec |
| Acceleration 0 – 62 mph | 9.5 sec |
| Acceleration 0 – 60 mph | 9 sec (Calculated) |
| Maximum speed | 208 km/h (129.25 mph) |
| Weight-to-power ratio | 10 kg/Hp, 99.7 Hp/tonne |
| Weight-to-torque ratio | 4.6 kg/Nm, 219.3 Nm/tonne |
| Power | 150 Hp @ 4000 rpm |
| Power per litre | 75.2 Hp/l |
| Torque | 330 Nm @ 2000 rpm (243.4 lb.-ft. @ 2000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M47D20 |
| 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 |
| Valvetrain | DOHC |
| Engine oil capacity | 5.5 l (5.81 US qt, 4.84 UK qt) |
| Coolant capacity | 9.3 l (9.83 US qt, 8.18 UK qt) |
| Kerb Weight | 1505 kg (3317.96 lbs.) |
| Max. weight | 2005 kg (4420.27 lbs.) |
| Max load | 500 kg (1102.31 lbs.) |
| Trunk (boot) space – minimum | 435 l (15.36 cu. ft.) |
| Trunk (boot) space – maximum | 1345 l (47.5 cu. ft.) |
| Fuel tank capacity | 63 l (16.64 US gal, 13.86 UK gal) |
| Length | 4480 mm (176.38 in.) |
| Width | 1740 mm (68.5 in.) |
| Height | 1410 mm (55.51 in.) |
| Wheelbase | 2725 mm (107.28 in.) |
| Front track | 1470 mm (57.87 in.) |
| Rear track | 1485 mm (58.46 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 5 |
| Gearbox type | Automatic transmission |
| Front suspension | Wishbone |
| Rear suspension | Coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic |
| Tires size | 205/55 R16 |
| Wheel rims size | 7J x 16 |
Powertrain & Engine Architecture
The heart of the 320d Steptronic is the M47D20, a 2.0-liter inline-four cylinder diesel engine. This engine utilizes a common rail direct injection system, delivering fuel at extremely high pressure for improved combustion efficiency and reduced emissions. The M47D20 features a single turbocharger with an intercooler, boosting power output to 150 horsepower at 4000 rpm and 330 Nm (243 lb-ft) of torque at a low 2000 rpm. The engine employs a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, optimizing gas flow for enhanced performance. The “Steptronic” transmission is a five-speed automatic gearbox, offering smooth shifts and convenience. While not as sporty as the available manual transmission, it provided a more relaxed driving experience, particularly in urban environments.
Driving Characteristics
The 320d Steptronic offered a comfortable and refined driving experience. Acceleration from 0 to 60 mph took approximately 9.5 seconds, making it adequately quick for everyday driving. The automatic transmission, while smooth, did slightly diminish the engine’s responsiveness compared to the manual version. The gear ratios were tuned for fuel efficiency, prioritizing economy over outright performance. The torque-rich diesel engine provided ample pulling power for overtaking and cruising on the highway. Compared to the 318d, the 320d offered a noticeable performance improvement, while the 330d provided significantly more power and a sportier feel.
Equipment & Trim Levels
The 320d Steptronic typically came equipped with a respectable level of standard features. These included air conditioning, power windows, central locking, and an AM/FM radio. Upholstery was usually cloth, although leather options were available. Optional extras included a sunroof, upgraded audio system, navigation system, and heated front seats. The E46 facelift also saw improvements in interior trim quality, with more refined materials and a more modern dashboard design. Specific trim packages, such as Sport or Luxury, could further enhance the vehicle’s features and aesthetics.
Chassis & Braking
The E46 3 Series Touring featured a well-engineered chassis 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 Steptronic was equipped with ventilated disc brakes at the front and solid disc brakes at the rear. Anti-lock Braking System (ABS) was standard, enhancing safety and control during emergency braking. The steering was a hydraulic power-assisted rack and pinion system, offering precise and responsive steering feel.
Market Reception & Comparison
The 320d Steptronic was well-received in the European market, where diesel engines were – and still are – highly popular due to their fuel efficiency and lower running costs. Critics praised the car’s comfortable ride, refined engine, and practical station wagon body style. Compared to the petrol-powered 3 Series models, the 320d offered significantly better fuel economy. However, some reviewers noted that the automatic transmission could feel slightly sluggish at times. The 320d also proved to be a reliable and durable vehicle, with relatively few major mechanical issues reported.
Legacy
The E46 3 Series Touring, particularly the 320d Steptronic, has developed a strong following among enthusiasts and used car buyers. The M47D20 engine is known for its robustness and longevity, provided it has been properly maintained. While older examples may require some maintenance, such as replacing suspension components and addressing minor rust issues, the E46 3 Series Touring remains a practical and enjoyable vehicle. Today, these cars are often sought after as affordable and reliable daily drivers, offering a taste of BMW’s renowned driving dynamics in a versatile package. The combination of a fuel-efficient diesel engine and a convenient automatic transmission continues to appeal to buyers looking for a sensible and well-rounded vehicle.
