Technical Specifications
| Brand | BMW |
| Model | 3 Series |
| Generation | 3 Series Sedan (E46, facelift 2001) |
| Type (Engine) | 316i (116 Hp) Steptronic |
| Start of production | 2001 |
| End of production | 2005 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 10.9 l/100 km (21.6 US mpg) |
| Fuel consumption (extra urban) | 6.4 l/100 km (36.8 US mpg) |
| Fuel consumption (combined) | 8 l/100 km (29.4 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 11.9 sec |
| Acceleration 0 – 62 mph | 11.9 sec |
| Acceleration 0 – 60 mph | 11.3 sec |
| Maximum speed | 200 km/h (124.27 mph) |
| Weight-to-power ratio | 11.4 kg/Hp |
| Weight-to-torque ratio | 7.5 kg/Nm |
| Power | 116 Hp @ 5500 rpm |
| Torque | 175 Nm @ 3750 rpm (129.07 lb.-ft. @ 3750 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N42B18 |
| Engine displacement | 1796 cm3 (109.6 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 81 mm (3.19 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated |
| Valvetrain | DOHC |
| Engine oil capacity | 4.25 l (4.49 US qt | 3.74 UK qt) |
| Coolant capacity | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Kerb Weight | 1320 kg (2910.1 lbs.) |
| Max. weight | 1820 kg (4012.41 lbs.) |
| Max load | 500 kg (1102.31 lbs.) |
| Trunk (boot) space – minimum | 410 l (14.48 cu. ft.) |
| Fuel tank capacity | 63 l (16.64 US gal | 13.86 UK gal) |
| Length | 4470 mm (175.98 in.) |
| Width | 1740 mm (68.5 in.) |
| Height | 1420 mm (55.91 in.) |
| Wheelbase | 2725 mm (107.28 in.) |
| Front track | 1480 mm (58.27 in.) |
| Rear track | 1495 mm (58.86 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 5 |
| Gearbox type | Automatic transmission |
| Front suspension | Spring Strut |
| 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 | 195/65 R15 |
| Wheel rims size | 6.5J x 15 |
The BMW E46 316i Steptronic, produced from 2001 to 2005, served as the entry point into the popular E46 3 Series sedan range for many buyers. Positioned below the 318i and 320i models, it aimed to deliver the core BMW driving experience with a more accessible price tag and improved fuel efficiency. This variant was particularly popular in Europe and other markets where smaller engine displacements were favored due to tax regulations and fuel costs. The “Steptronic” designation identifies BMW’s automatic transmission, offering a convenient alternative to the standard manual gearbox. The facelift introduced in 2001 brought subtle cosmetic enhancements, including revised headlights and taillights, alongside minor mechanical refinements.
Powertrain & Engine Architecture
The 316i Steptronic is powered by the N42B18, a 1.8-liter inline-four cylinder engine. This engine marked a significant upgrade over the older M43 series, incorporating advancements in combustion chamber design and lightweight construction. The N42 boasts double overhead camshafts (DOHC) and four valves per cylinder, contributing to its respectable power output for its size. Fuel delivery is managed by a multi-port fuel injection system, ensuring precise fuel metering. The engine generates 116 horsepower at 5500 rpm and 175 Nm (129 lb-ft) of torque at 3750 rpm.
The “Steptronic” transmission is a 5-speed automatic gearbox designed for smooth and effortless operation. It offers both fully automatic shifting and a manual shift mode, allowing drivers some control over gear selection. The transmission’s gear ratios are optimized for fuel economy and relaxed cruising, rather than aggressive acceleration. This focus on comfort and convenience made it a popular choice for drivers prioritizing ease of use.
Driving Characteristics
The driving experience in the 316i Steptronic is characterized by its smoothness and refinement. While not a performance-focused model, it provides sufficient power for everyday driving needs. Acceleration from 0-60 mph takes approximately 11.3 seconds, and the car has a top speed of 200 km/h (124 mph). The automatic transmission, while convenient, does slightly reduce the car’s responsiveness compared to the manual transmission versions. The overall driving feel is comfortable and predictable, making it well-suited for commuting and longer journeys. Compared to the 318i and 320i, the 316i feels noticeably less powerful, especially during overtaking. However, the 316i offers a significant advantage in fuel economy.
Equipment & Trim Levels
The 316i Steptronic typically came standard with a reasonable array of features, including power windows, central locking, air conditioning, and an AM/FM radio. Interior upholstery was generally cloth, although leather options were available as upgrades. The dashboard layout is consistent with the E46 design language, offering a clear and functional interface. Optional extras included a sunroof, an upgraded audio system, and sport seats. The trim level is generally considered entry-level within the 3 Series range, but still provides a premium feel compared to many competitors.
Chassis & Braking
The E46 316i Steptronic utilizes a MacPherson strut front suspension and a multi-link rear suspension, providing a good balance between ride comfort and handling precision. The suspension tuning is slightly softer than the sportier 3 Series models, prioritizing comfort over aggressive handling. The braking system consists of ventilated discs at the front and solid discs at the rear, with Anti-lock Braking System (ABS) as standard equipment. The car’s weight distribution is relatively balanced, contributing to its predictable handling characteristics.
Market Reception & Comparison
The 316i Steptronic was generally well-received by automotive critics as a practical and affordable entry point into the BMW 3 Series lineup. It was praised for its comfortable ride, refined interior, and fuel efficiency. However, some reviewers noted that the engine lacked the outright power of its larger counterparts. Compared to the 318i, the 316i offered a noticeable fuel economy benefit, but at the expense of performance. The 316i was often viewed as a sensible choice for buyers who prioritized practicality and economy over sporty driving dynamics.
Legacy
The E46 316i Steptronic has proven to be a relatively reliable vehicle, with the N42 engine generally considered durable. However, like all older BMWs, it is susceptible to age-related issues such as cooling system leaks and electrical problems. The Steptronic automatic transmission is generally reliable with regular maintenance. Today, the E46 316i Steptronic can be found on the used car market at affordable prices. It remains a popular choice for those seeking a well-built and comfortable sedan with the BMW badge, offering a classic driving experience at a reasonable cost. Parts availability is generally good, making it a relatively easy car to maintain.
