The BMW 3 Series Sedan (E30) 323i Automatic, produced between 1983 and 1987, represents a pivotal point in the evolution of BMW’s iconic 3 Series. Falling within the first generation (E30) of the 3 Series, this variant offered a blend of performance and convenience aimed at buyers seeking a more relaxed driving experience than the standard manual transmission models. It occupied a mid-range position within the E30 lineup, positioned above the base 318i and below the high-performance 325i and M3. The 323i Automatic was primarily sold in North America and Europe, becoming a popular choice for those desiring a sporty sedan with the ease of an automatic gearbox.
Technical Specifications
| Brand | BMW |
| Model | 3 Series |
| Generation | 3 Series Sedan (E30) |
| Type (Engine) | 323i (150 Hp) Automatic |
| Start of production | 1983 |
| End of production | 1987 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban | 11.8 l/100 km (19.9 US mpg) |
| Fuel consumption (economy) – extra urban | 7.6 l/100 km (30.9 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 9.2 sec |
| Acceleration 0 – 62 mph | 9.2 sec |
| Acceleration 0 – 60 mph | 8.7 sec |
| Maximum speed | 197 km/h (122.41 mph) |
| Weight-to-power ratio | 7.6 kg/Hp |
| Weight-to-torque ratio | 5.6 kg/Nm |
| Power | 150 Hp @ 6000 rpm |
| Torque | 205 Nm @ 4000 rpm (151.2 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M20B23 |
| Engine displacement | 2316 cm3 (141.33 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 80 mm (3.15 in.) |
| Piston Stroke | 76.8 mm (3.02 in.) |
| Compression ratio | 9.8:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | SOHC |
| Engine oil capacity | 4.25 l (4.49 US qt | 3.74 UK qt) |
| Coolant | 10.5 l (11.1 US qt | 9.24 UK qt) |
| Kerb Weight | 1140 kg (2513.27 lbs.) |
| Max. weight | 1700 kg (3747.86 lbs.) |
| Max load | 560 kg (1234.59 lbs.) |
| Trunk (boot) space – minimum | 404 l (14.27 cu. ft.) |
| Fuel tank capacity | 55 l (14.53 US gal | 12.1 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1200 kg (2645.55 lbs.) |
| Permitted trailer load without brakes | 500 kg (1102.31 lbs.) |
| Length | 4325 mm (170.28 in.) |
| Width | 1645 mm (64.76 in.) |
| Height | 1380 mm (54.33 in.) |
| Wheelbase | 2570 mm (101.18 in.) |
| Front track | 1407 mm (55.39 in.) |
| Rear (Back) track | 1415 mm (55.71 in.) |
| Front overhang | 761 mm (29.96 in.) |
| Rear overhang | 994 mm (39.13 in.) |
| Ride height (ground clearance) | 125 mm (4.92 in.) |
| Drag coefficient (Cd) | 0.35 |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears and type of gearbox | 4 gears, automatic transmission |
| Front suspension | Independent type McPherson |
| Rear suspension | Trailing arm |
| Front brakes | Disc |
| Rear brakes | Drum |
| Steering type | Steering rack and pinion |
| Tires size | 195/60 R14 |
| Wheel rims size | 14 |
Powertrain & Engine Architecture
The heart of the 323i Automatic is the M20B23 engine, a 2.3-liter inline-six cylinder powerplant. This engine, a hallmark of BMW engineering during the 1980s, featured a single overhead camshaft (SOHC) valvetrain operating two valves per cylinder. The M20B23 utilized Bosch Motronic fuel injection, a sophisticated system for its time, delivering precise fuel metering for optimal performance and emissions control. The engine’s robust construction and relatively simple design contributed to its longevity and ease of maintenance. Paired with the M20B23 was a four-speed automatic transmission, a ZF-sourced unit known for its smoothness and reliability. This transmission was geared towards comfortable cruising and ease of use, rather than outright performance.
Driving Characteristics
The 323i Automatic offered a distinctly different driving experience compared to its manual transmission counterparts. While the manual versions provided a more engaging and direct connection to the engine, the automatic prioritized convenience. Acceleration from 0 to 60 mph took approximately 8.7 seconds, slightly slower than the manual version. The automatic transmission’s gear ratios were optimized for fuel efficiency and smooth transitions, resulting in a more relaxed driving style. However, this came at the expense of some responsiveness. The automatic also added weight, impacting handling slightly compared to the lighter manual models. Despite these differences, the 323i Automatic still delivered a respectable level of performance and retained the BMW’s characteristic balanced handling.
Equipment & Trim Levels
The 323i Automatic typically came equipped with a reasonable level of standard features. Interior appointments included cloth upholstery, power windows, and a basic sound system. Optional extras included a sunroof, leather upholstery, air conditioning, and upgraded audio systems. The dashboard layout was typical of the E30, featuring a straightforward design with clearly marked gauges. The 323i Automatic often featured a wood trim accent on the dashboard, adding a touch of luxury. The trim level was generally considered a step up from the base 318i, offering a more refined interior and a more powerful engine.
Chassis & Braking
The E30 323i Automatic utilized a McPherson strut front suspension and a trailing arm rear suspension. This setup provided a good balance between ride comfort and handling precision. The front brakes were ventilated discs, while the rear brakes were drums. This configuration was common for vehicles of this era and weight class. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering. The suspension tuning was geared towards providing a comfortable ride without sacrificing too much handling capability.
Market Reception & Comparison
The 323i Automatic was generally well-received by automotive critics. It was praised for its smooth ride, comfortable interior, and refined engine. However, some critics noted that the automatic transmission dulled the driving experience compared to the manual version. Compared to the 318i, the 323i offered a significant performance upgrade. Compared to the 325i, it provided a more affordable entry point into the higher-performance E30 models, albeit with slightly less power. Fuel economy was reasonable for the time, averaging around 19.9 mpg in the city and 30.9 mpg on the highway. Reliability was generally good, although maintenance costs could be higher than some competing models due to the BMW’s more complex engineering.
Legacy
The E30 323i Automatic has become a sought-after classic among BMW enthusiasts. The M20B23 engine is known for its durability and relatively simple maintenance requirements. Well-maintained examples are becoming increasingly rare and valuable. The automatic transmission, while not as desirable as the manual for some purists, offers a unique and comfortable driving experience. Today, the 323i Automatic represents a piece of automotive history, embodying the spirit of BMW’s engineering prowess and its commitment to building driver-focused vehicles. Finding one in good condition requires patience and careful inspection, but the reward is a classic BMW that offers a blend of performance, comfort, and style.
