🏷️ Basic Information

Make:

BMW

Model:

320i

Year:

1989

Chassis Code:

E30

👋 Introduction

Positioning:

The BMW 320i (E30) was positioned as a compact executive sports sedan, known for its engaging driving dynamics, premium build quality, and sporty yet refined image.

Competitors:

Competed with vehicles like the Mercedes-Benz 190E, Audi 80/90, and Alfa Romeo 75.

Driving Dynamics:

Renowned for its balanced chassis, rear-wheel-drive layout, and responsive handling, making it a favorite among driving enthusiasts.

Design:

Iconic 'E30' design characterized by clean lines, a driver-focused cockpit, and a robust, well-built interior.

📋 Manual Details

Covered Models:

All 1989 BMW 320i models (all engine, transmission, and trim variants)

Estimated Page Count:

Approximately 1500-2000+ pages (typical for comprehensive workshop manuals of this era, though exact count varies by specific edition/compiler)

Type:

Workshop Repair Service Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine:

M20B20 (2.0L inline-6), engine mechanicals, lubrication, cooling, fuel, ignition, exhaust, engine management (DME)

Transmission:

Getrag 260 5-speed manual transmission; ZF 4HP22 4-speed automatic transmission, clutch, driveline, driveshaft, differential

Brakes:

Front vented discs, rear discs (or drums depending on specific market/build), ABS (if equipped), brake system hydraulics, parking brake

Suspension:

Front MacPherson struts, rear semi-trailing arms, springs, dampers, bushings, steering system (rack and pinion), wheel alignment

Electrical:

Battery, charging system (alternator), starting system, lighting, instrumentation, dashboard, wiring diagrams, fuse box, relays, ECU

Bodywork:

Chassis structure, body panels, doors, windows, convertible top (if applicable), interior trim, bumpers, seals

HVAC:

Heating, ventilation, air conditioning (if equipped), blower motor, controls, refrigerant system

Fuel System:

Fuel tank, fuel pump, fuel filter, fuel injectors (Bosch L-Jetronic or similar), fuel pressure regulator

Maintenance:

Oil changes, filter replacements, spark plug service, coolant flushes, brake fluid changes, belt inspections/replacements, general tune-ups

Troubleshooting:

Diagnostic procedures for engine, transmission, electrical, and other systems, fault code interpretation (if applicable)

Repair:

Engine overhaul, transmission rebuild, brake caliper replacement, suspension component replacement, electrical component repair, body panel repair

Installation:

Component replacement and installation (e.g., alternators, starters, radiators, exhaust systems)

Depth:

Comprehensive, covering basic maintenance to complete engine and transmission overhauls, detailed diagnostic procedures, and electrical system troubleshooting.

📊 Manual Specifications

File Type:

PDF

Searchability:

Likely text-searchable (OCR processed if scanned), allowing for quick keyword lookups.

Print Readability:

High-resolution scans ensuring clear text and diagrams for printing.

Binding For Physical Copy:

N/A (Digital PDF)

Paper Type For Physical Copy:

N/A (Digital PDF)

⚙️ Engine Specifications

Engine Code:

M20B20

Engine Type:

Inline 6-cylinder, SOHC

Displacement:

1990 cc (2.0 Liters)

Horsepower:

Approx. 125-129 hp (93-96 kW) at 6000 rpm (market dependent)

Torque:

Approx. 165-170 Nm (122-125 lb-ft) at 4300 rpm (market dependent)

Injection System:

Bosch L-Jetronic or Motronic (likely L-Jetronic for early models, Motronic for later '89 variants) fuel injection

Fuel Type:

Unleaded Gasoline (RON 91 or higher recommended)

Coolant Type:

Ethylene glycol-based coolant (e.g., BMW P/N 82 14 1 467 704 or equivalent blue coolant)

Oil Capacity:

Approx. 4.25 liters (4.5 US quarts) with filter change

Recommended Oil Viscosity:

SAE 20W-50 or 15W-40 depending on climate (refer to manual for specific recommendations)

🔧 Transmission

Manual Transmission:

Getrag 260, 5-speed manual

Automatic Transmission:

ZF 4HP22, 4-speed automatic

Clutch Type:

Hydraulically operated single dry plate clutch

Manual Transmission Fluid:

GL-4 gear oil (e.g., Pentosin MTF.2 or equivalent)

Automatic Transmission Fluid:

Dexron-III/Mercon compatible ATF (e.g., Pentosin ATF 1 or equivalent)

📐 Dimensions

Length:

Approx. 4340 mm (170.9 in)

Width:

Approx. 1675 mm (65.9 in)

Height:

Approx. 1380 mm (54.3 in)

Curb Weight:

Approx. 1200-1300 kg (2646-2866 lbs), depending on options and body style

Wheelbase:

Approx. 2570 mm (101.2 in)

Standard Wheel Size:

14 or 15 inch alloy wheels

Standard Tire Size:

195/65HR14 or 195/60HR15

Bolt Pattern:

5x120

🛡️ Safety Features

Crash Test Information:

Official crash test ratings from the era are limited and vary by region. However, the E30 chassis was known for its robust safety cage construction and crumple zones.

ABS:

Anti-lock Braking System (ABS) was an optional feature on most 320i models of this year.

Seatbelts:

3-point inertia-reel seat belts for front occupants; lap belts for rear occupants (depending on market).

Steering Column:

Collapsible steering column for improved impact protection.

💡 Technology Features

Audio System:

Basic analog radio and cassette player, often with optional amplifier and upgraded speaker systems.

Cruise Control:

Optional cruise control system available on some models.

Traction Control:

ASC (Automatic Stability Control) was introduced later in the E30 lifecycle and may be present on some late-model 1989 E30s, though less common on the 320i.

Connectivity Features:

No modern connectivity features like Bluetooth or USB. Communication was through the analog audio system.

🔧 Maintenance

Oil Change Interval:

Typically every 7,500-10,000 miles (12,000-15,000 km) or annually, depending on driving conditions and oil used (refer to manual for specific OEM recommendation).

Spark Plug Replacement:

Around 30,000 miles (48,000 km) for standard plugs, or longer for platinum/iridium plugs if fitted (check specific plug type).

Timing Belt Replacement:

The M20 engine uses a timing *belt*. Replacement is typically recommended every 60,000 miles (96,000 km) or 4-5 years. Crucial to prevent catastrophic engine damage.

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid (e.g., Ate Super Blue/Gold or equivalent)

Coolant Capacity:

Approx. 7.5 liters (7.9 US quarts)

Engine Oil Leaks:

Common leaks from valve cover gasket, oil pan gasket, and front/rear main seals due to age and material degradation.

Cooling System:

Radiator leaks, hose degradation, water pump failure, and thermostat issues are common due to age.

Fuel System:

Clogged fuel injectors, failing fuel pumps, and degraded fuel lines.

Suspension:

Worn control arm bushings, ball joints, tie rod ends, and sagging springs/shock absorbers are typical wear items.

Electrical:

Degraded wiring insulation, faulty grounds, failing relays, and instrument cluster issues (e.g., flickering gauges).

Rust:

E30s are susceptible to rust, particularly in the jacking points, rocker panels, wheel arches, and around the battery tray.

📚 Vehicle History

Bmw Heritage:

BMW has a long-standing reputation for building sporty, driver-focused vehicles, particularly with its acclaimed 3 Series lineage.

E30 Generation:

The E30 generation (1982-1991) succeeded the E21 and introduced significant advancements in engineering, design, and suspension, setting new benchmarks for the compact executive class.

320I Positioning:

The 320i typically served as an entry-level to mid-range model within the E30 lineup, offering a balance of performance and efficiency with the smooth inline-six engine.

Production Years E30:

1982-1991

Manufacturing Locations:

Primarily Germany (Munich), with some production in Austria and South Africa.

🏆 Awards & Recognition

E30 Reputation:

The E30 generation is widely considered a modern classic and is frequently praised by automotive journalists and enthusiasts for its driving purity and timeless design.