🏷️ Basic Information

Make:

BMW

Model:

3 Series

Chassis Code:

E30

Production Years Covered:

1983-1991

Engine Codes Covered:

M10, M40, M20, M21

👋 Introduction

E30 Era Importance:

The E30 redefined the compact executive sports sedan segment, balancing performance, luxury, and driver engagement.

Key Competitors:

Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75

Design Philosophy:

Classic BMW proportions, driver-focused cockpit, robust engineering.

Driving Dynamics:

Renowned for its balanced chassis, precise steering, and engaging handling characteristics.

📋 Manual Details

Primary Coverage:

Service, Repair, Maintenance, Rebuilding, Refurbishment, Restoration

Estimated Page Count:

Hundreds of pages (specific number not provided, implies comprehensive)

Type:

Service Repair Manual

Language:

English (assumed standard for this market)

Format:

PDF

File Format:

PDF (Portable Document Format)

Searchability:

Likely text-searchable, enabling quick information retrieval

Printability:

Printable for workshop use

Digital Accessibility:

Easily accessible on various devices

📖 Manual Coverage

Engine:

Full coverage including diagnosis, overhaul, component replacement, tuning

Fuel System:

Carbureted and Fuel Injection systems (Bosch L-Jetronic, Motronic) coverage

Ignition System:

Diagnosis, troubleshooting, component testing for electronic ignition

Cooling System:

Radiator, fan, water pump, thermostat, hoses, coolant specifications

Exhaust System:

Catalytic converter, mufflers, pipes, mounting, inspection

Transmission Manual:

Clutch, gearbox overhaul, synchronizers, linkage, fluid specifications

Transmission Automatic:

Shift control, hydraulic circuits, torque converter, cooling, fluid specifications

Drivetrain:

Driveshafts, CV joints, differential, axle shafts, lubrication

Suspension:

Front and rear suspension components, shock absorbers, springs, bushings, alignment

Steering System:

Steering rack, power steering pump, hoses, linkages, fluid

Brake System:

Front and rear discs, calipers, master cylinder, ABS (if equipped), bleeding procedures, fluid type

Electrical System:

Battery, alternator, starter, wiring diagrams, fuses, relays, lighting

Body And Chassis:

Frame, body panels, doors, windows, locks, hinges, rust repair considerations

Interior Trim:

Seats, dashboard, door panels, headliner removal and installation

Climate Control:

HVAC system, heater core, A/C compressor, refrigerant, diagnosis

Fuel Capacity:

Fuel tank capacity, fuel pump operation

Scheduled Maintenance:

Oil changes, filter replacements, spark plugs, fluid checks and replacements

Troubleshooting:

Diagnostic procedures for common and complex issues, fault codes interpretation

Engine Rebuild:

Complete engine disassembly, inspection, machining recommendations, reassembly

Transmission Overhaul:

Detailed steps for manual and automatic transmission internal repairs

Brake Repair:

Disc pad/shoe replacement, caliper/cylinder overhaul, rotor replacement, bleeding

Electrical Component Replacement:

Alternator, starter, ignition coil, sensors, ECUs

Suspension Component Replacement:

Ball joints, control arms, tie rods, springs, shocks

Bodywork Repair:

Panel replacement, rust repair techniques, alignment procedures

Diagnostic Flowcharts:

Step-by-step guides to identify and resolve specific problems

Depth:

Comprehensive (from basic maintenance to full engine/transmission rebuilds)

Detail Level:

Highly detailed with clear instructions and diagrams

Target Audience:

Professional mechanics and experienced DIY enthusiasts

⚙️ Engine Specifications

E30 Engine Variants:

M10 (4-cylinder, 1.8L), M40 (4-cylinder, 1.6L/1.8L), M20 (6-cylinder, 2.0L/2.3L/2.5L), M21 (Diesel, 2.4L)

Typical Horsepower Range:

75 hp (diesel) to 170 hp (325i/is)

Typical Torque Range:

90 lb-ft to 170 lb-ft

Fuel Delivery Systems:

Carburetor (e.g., Zenith/Solex) for early models, Bosch K-Jetronic and Motronic EFI for later/performance models.

Fuel Type:

Unleaded gasoline (Octane rating specified by engine type), Diesel for M21 models.

🔧 Transmission

Manual Transmission Options:

4-speed and 5-speed Getrag manual transmissions

Automatic Transmission Options:

ZF 3-speed or 4-speed automatic transmissions

Rear Wheel Drive:

All E30 models feature rear-wheel drive.

Limited Slip Differential:

Optional on many models, standard on M3 and some sport variants (e.g., 325is).

📐 Dimensions

Body Styles:

2-door sedan, 4-door sedan, convertible, touring (wagon - rare in US).

Wheelbase:

Approximately 2570 mm (101.2 inches) depending on model.

Curb Weight Range:

Approximately 1150 kg to 1450 kg (2535 lbs to 3197 lbs).

🛡️ Safety Features

Passive Safety Features:

Front crumple zones, safety cage construction, optional driver's side airbag (late models), seat belts.

Brake System Features:

Standard front disc brakes, rear disc or drum brakes depending on model. Anti-lock Braking System (ABS) was an option on higher trims.

💡 Technology Features

Audio System:

Basic AM/FM radio and cassette player, optional premium sound systems.

Display Technology:

Analog gauges, basic climate control displays.

Advanced Features:

ABS (Anti-lock Braking System) as an option on select models.

Connectivity Options:

None in the modern sense (no Bluetooth, USB, etc.) - focus on mechanical and electrical systems.

🔧 Maintenance

Oil Change Interval:

Typically every 7,500 - 10,000 miles (12,000 - 16,000 km) or annually.

Timing Belt Replacement:

M40 engines require timing belt replacement every 40,000 miles (60,000 km) or 3 years. M10/M20 use chains, which are generally more durable but require inspection.

Engine Oil:

API SG or higher, viscosity typically 10W-40 or 15W-50 depending on climate. Consult manual for specific engine.

Coolant:

BMW Blue Antifreeze (G48) or equivalent Ethylene Glycol-based coolant, mixed 50/50 with distilled water.

Brake Fluid:

DOT 3 or DOT 4, check manual for specific recommendation.

Transmission Fluid Manual:

API GL-4, SAE 75W-90 or 80W-90 gear oil.

Transmission Fluid Automatic:

Dexron II or III (check specific transmission type).

Common Problems:

Cooling system leaks (radiator, hoses, expansion tank), head gasket failures (M40 engine), fuel pump failures, rear wheel bearing noise, seized heater blowers, rust in common areas (wheel arches, rocker panels, jacking points).

E30 Specific Wear:

Worn suspension bushings, strut mount failure, cracked dashboard plastic.

📚 Vehicle History

Bmw Philosophy:

BMW's reputation for building driver-oriented, high-quality vehicles.

E30 Introduction:

Launched in 1982 as a successor to the E21 3 Series.

E30 Significant Variants:

M3 (homologation special), Alpina variants, 318iS (sporty 4-cyl coupe).

Production Period:

1982-1994 (with final convertibles produced into 1994 in some markets).

Manufacturing Locations:

Germany ( utama), Rosslyn (South Africa), Dingolfing, Munich.

🏆 Awards & Recognition

E30 Reputation:

Widely regarded as one of the best-handling sports sedans of its era, praised for its purity of driving experience.

E30 M3 Acclaim:

The E30 M3 is a motorsport icon and highly sought-after collector car.