Market Position:
The BMW 3 Series (E30) cemented BMW's reputation for sporty, driver-focused sedans and coupes. This manual provides essential support for owners and mechanics maintaining this iconic model.
Competitive Analysis:
Competed against cars like the Mercedes-Benz 190E, Audi 80/90, and Alfa Romeo 75, offering a more dynamic driving experience and advanced engineering for its era.
Key Features:
Rear-wheel drive, balanced chassis, refined engines, upscale interior, and sport-oriented handling, making it a benchmark in its class.
Manual Value Proposition:
An indispensable resource for preserving the performance and longevity of the E30 3 Series, enabling cost-effective DIY maintenance and accurate professional repairs.
Covered Model Years:
1987, 1988, 1989, 1990, 1991
Covered Body Styles:
Sedan (E30/2), Coupe (E30/2), Convertible (E30/2C), Touring (E30/3), M3 (E30/2S)
Covered Regions:
Global (specific regional variations may apply, covered generally)
Manual Type:
Workshop Service Repair Manual
Format:
PDF (Digital Download)
Engine Mechanical:
Engine assembly, disassembly, overhaul, timing, cooling system, lubrication system, fuel delivery system (carburetor & early EFI), exhaust system.
Engine Management:
Ignition system, fuel injection (Bosch Motronic), sensor diagnostics, ECU functions.
Transmission Drivetrain:
Manual transmission (Getrag 260), automatic transmission (ZF 4HP22), clutch, driveshaft, differential, axles.
Brakes:
Front disc brakes, rear disc brakes (or drum on some early models), ABS (optional), hydraulic system, parking brake.
Suspension Steering:
Front MacPherson struts, rear semi-trailing arms, bushings, shock absorbers, springs, steering rack, power steering system.
Electrical System:
Battery, alternator, starter, lighting system, wipers, horn, power windows, central locking, fuse box, wiring diagrams.
Bodywork Interior:
Body panel removal and installation, interior trim, seats, doors, windows, sunroof operation, HVAC system (heating, ventilation, air conditioning).
Maintenance Procedures:
Oil changes, filter replacements, spark plug service, coolant flushes, brake fluid replacement, belt inspection and replacement.
Repair Procedures:
Engine rebuild, transmission overhaul, brake caliper replacement, suspension component renewal, electrical component troubleshooting and replacement.
Diagnostic Procedures:
Troubleshooting guides for common symptoms, fuel system checks, ignition system testing, electrical fault finding.
Specifications Data:
Torque specifications, engine tuning data, fluid capacities, electrical component resistance values.
Technical Depth:
Comprehensive, covering basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic information and repair procedures for most components.
Engine Variants:
4-cylinder M10 (1.8L, 2.0L) and 6-cylinder M20 (2.5L, 2.7L 'eta')
325I Horsepower:
Approximately 168-171 hp (varies by market and year)
325I Torque:
Approximately 210-220 Nm (155-162 lb-ft)
325E Horsepower:
Approximately 121-127 hp (focus on torque)
325E Torque:
Approximately 230-235 Nm (170-173 lb-ft)
Fuel System Early Models:
Carbureted (e.g., Pierburg 2E)
Fuel System Later Models:
Bosch LE-Jetronic or L-Jetronic fuel injection (e.g., on 325i, 325e)
Cooling Type:
Pressurized liquid cooling system with thermostatic control.
Coolant Capacity:
Approximately 7.0 - 8.0 liters (depending on engine variant)
Oil Type Specification:
API SG or higher, SAE 15W-40 or 10W-40 (check specific manual for climate/engine variations)
Oil Capacity:
Approximately 4.0 - 5.0 liters (depending on engine variant, excluding filter)
Standard Transmission Type:
Getrag 260 5-speed manual transmission
Optional Transmission Type:
ZF 4HP22 4-speed automatic transmission
Clutch Type:
Hydraulically actuated single-plate dry clutch.
Transmission Fluid Manual:
Manual transmission: API GL-4, SAE 75W-90 or 80W-90
Transmission Fluid Automatic:
Automatic transmission: Dexron III or equivalent
Wheelbase:
Approx. 2565-2570 mm (101.0-101.2 in)
Length:
Approx. 4350-4400 mm (171.3-173.2 in)
Width:
Approx. 1675-1700 mm (65.9-66.9 in)
Height:
Approx. 1380-1415 mm (54.3-55.7 in)
Curb Weight:
Approx. 1150-1350 kg (2535-2976 lbs) depending on body style and engine
Gross Vehicle Weight:
Varies by model, typically around 1700-1900 kg
Safety Ratings Era:
While official NHTSA/Euro NCAP ratings for this specific era are scarce, the E30 was known for solid build quality and crumple zones, providing good occupant protection for its time.
Active Safety Features:
Optional Anti-lock Braking System (ABS) on later models, generally good chassis dynamics contributing to active safety.
Passive Safety Features:
Reinforced passenger cell, impact-absorbing steering column, front and rear crumple zones, padded interior surfaces.
Seatbelts:
Three-point inertia-reel seatbelts (front and rear).
Infotainment System:
Basic AM/FM radio with cassette player, optional CD player, analog gauges, manual climate controls.
Driver Assistance Features:
Primarily focused on chassis dynamics and driver feedback rather than electronic aids. Optional ABS was the most significant electronic assistance.
Connectivity Features:
No modern connectivity features like Bluetooth or USB. Basic features included power windows and locks on higher trims.
Oil Change Interval:
Typically every 5,000-7,500 miles (8,000-12,000 km) or 6-12 months, depending on driving conditions. Consult manual for specific recommendations.
Coolant Replacement Interval:
Every 2-3 years or 30,000-50,000 miles (48,000-80,000 km).
Spark Plug Replacement Interval:
Depends on plug type; platinum plugs could last 50,000+ miles, standard copper plugs around 20,000-30,000 miles.
Brake Fluid Specification:
DOT 3 or DOT 4 (check manual for specific fill level recommendations).
Power Steering Fluid:
ATF Dexron II or III, or specific BMW hydraulic fluid.
Known Issues Cooling System:
Cracked plastic expansion tanks, failing water pumps, and deteriorating hoses are common.
Known Issues Suspension:
Worn control arm bushings, worn sway bar links, and aging shock absorbers.
Known Issues Electrical:
Failing alternator, worn starter motors, faulty fuel pump relays, and degraded wiring insulation.
Known Issues Engine:
Oil leaks from valve cover gaskets and oil pan seals, timing belt wear (on engines with belts), and clogged fuel injectors.
Maintenance Tips:
Regularly inspect the cooling system, maintain battery health, and address any oil leaks promptly.
Brand Heritage:
BMW has a long history of producing sporty, performance-oriented vehicles with a focus on driving dynamics and engineering excellence.
Model Evolution:
The E30 generation, launched in 1982, succeeded the E21 and introduced more modern styling and engineering. It was produced in various body styles and engine configurations, including the legendary M3.
Production Years:
1982-1994 (E30 platform)
Manufacturing Locations:
Primarily Germany (Munich, Dingolfing), with some assembly in other countries.
Iconic Variants:
The E30 M3, with its homologation special engine and chassis enhancements, is a highly sought-after classic performance car.
