The BMW 3 Series Touring (E46) facelift 318d Steptronic, produced from 2003 to 2005, represents a specific configuration within the broader E46 Touring range. This variant combined a 2.0-liter four-cylinder diesel engine with BMW’s Steptronic automatic transmission, offering a blend of fuel efficiency and practicality aimed at the European market. Positioned as an entry-level diesel option within the E46 Touring lineup, it catered to buyers seeking a comfortable and economical wagon without the higher performance or cost of models like the 320d or 330d. The facelift introduced in 2001 brought styling updates and refinements to the E46, enhancing its appeal and modernizing its appearance.
Technical Specifications
| Brand | BMW |
| Model | 3 Series |
| Generation | 3 Series Touring (E46, facelift 2001) |
| Type (Engine) | 318d (115 Hp) Steptronic |
| Start of production | 2003 |
| End of production | 2005 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 9.1 l/100 km (25.8 US mpg, 31 UK mpg, 11 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) | 6.8 l/100 km (34.6 US mpg, 41.5 UK mpg, 14.7 km/l) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 11.3 sec |
| Acceleration 0 – 62 mph | 11.3 sec |
| Acceleration 0 – 60 mph | 10.7 sec |
| Maximum speed | 199 km/h (123.65 mph) |
| Weight-to-power ratio | 13.1 kg/Hp, 76.2 Hp/tonne |
| Weight-to-torque ratio | 5.4 kg/Nm, 185.4 Nm/tonne |
| Power | 115 Hp @ 4000 rpm |
| Power per litre | 57.6 Hp/l |
| Torque | 280 Nm @ 1750 rpm (206.52 lb.-ft. @ 1750 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 |
| Engine oil capacity | 5.5 l (5.81 US qt | 4.84 UK qt) |
| Coolant | 7.9 l (8.35 US qt | 6.95 UK qt) |
| Kerb Weight | 1510 kg (3328.98 lbs.) |
| Max. weight | 2005 kg (4420.27 lbs.) |
| Max load | 495 kg (1091.29 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 (Back) track | 1485 mm (58.46 in.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 5 gears, 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 Steering |
| Tires size | 195/65 R16 |
| Wheel rims size | 6.5J x 16 |
Powertrain & Engine Architecture
The heart of the 318d Touring was the M47D20, a 1.995-liter inline four-cylinder diesel engine. This engine utilized common rail direct injection, a technology that allowed for precise fuel delivery and improved combustion efficiency. A turbocharger with an intercooler was employed to boost power output, delivering 115 horsepower at 4000 rpm and 280 Nm (206.52 lb-ft) of torque at a low 1750 rpm. The M47D20 featured four valves per cylinder and a compression ratio of 17:1. The Steptronic automatic transmission was a five-speed unit, offering smooth gear changes and convenience. This transmission was electronically controlled and adapted to the engine’s characteristics for optimal performance and fuel economy.
Driving Characteristics
The 318d Steptronic offered a comfortable and relaxed driving experience. While not particularly sporty, the engine provided adequate power for everyday driving and highway cruising. The automatic transmission, while smooth, did slightly diminish the responsiveness compared to the six-speed manual option available on other 3 Series models. Acceleration from 0 to 100 km/h (0-62 mph) took around 11.3 seconds, and the top speed was 199 km/h (123.65 mph). The emphasis was on fuel efficiency, with combined fuel consumption figures around 6.8 l/100 km (34.6 US mpg). The torque available from low engine speeds made it easy to navigate city traffic and overtake slower vehicles.
Equipment & Trim Levels
The 318d Touring typically came with a reasonable level of standard equipment, including air conditioning, power windows, central locking, and an audio system. Interior upholstery was usually cloth, although leather options were available. The dashboard layout was typical of the E46, with a functional and ergonomic design. Optional extras included sunroof, navigation system, heated seats, and upgraded audio systems. Specific trim packages could add features like wood trim or sport seats.
Chassis & Braking
The E46 Touring featured a MacPherson strut front suspension and a multi-link rear suspension, providing a good balance of ride comfort and handling. The 318d Touring was equipped with ventilated disc brakes at the front and solid disc brakes at the rear. Anti-lock Braking System (ABS) was standard. The suspension was tuned for comfort, prioritizing a smooth ride over aggressive handling. The steering was hydraulic power-assisted, offering a reasonably direct feel.
Market Reception & Comparison
The 318d Touring was generally well-received as a practical and economical option within the E46 range. Critics praised its fuel efficiency and comfortable ride. However, some noted that the engine lacked the punch of the higher-output diesel models, such as the 320d. Compared to the 320d, the 318d offered lower running costs but sacrificed some performance. The 318i (petrol) offered similar performance but with lower fuel economy. The 318d appealed to buyers who prioritized fuel efficiency and practicality over outright performance.
Legacy
The M47D20 engine, while generally reliable, is known to have some potential issues, including injector failures and turbocharger wear. Regular maintenance, including oil changes and injector cleaning, is crucial for long-term reliability. Today, the E46 318d Touring represents an affordable entry point into BMW ownership. Well-maintained examples are still relatively common on the used car market, offering a blend of practicality, comfort, and fuel efficiency. Its status as a practical and economical estate car has ensured its continued appeal to a wide range of buyers.
