Segment:
Compact Executive Sedan/Coupe/Convertible
Reputation:
Known for sporty handling, build quality, and a driver-focused experience.
Key Competitors 1986:
Mercedes-Benz 190E, Audi 90, Acura Integra, Volvo 240
Handling:
Rear-wheel drive, independent suspension on all corners, excellent chassis balance.
Engine Variants:
Inline-four and inline-six gasoline engines known for smoothness and durability.
Build Quality:
Robust construction, characteristic of BMW's engineering at the time.
Primary Coverage:
Full Service Repair and Maintenance
Secondary Coverage:
Restoration, Refurbishment, Troubleshooting
Estimated Page Count:
High (typically 1000+ pages for a comprehensive E30 manual)
Type:
Workshop Manual / Service Manual
Format:
Printed Manual (likely)
Powertrain:
Engine mechanical, engine management (fuel injection, ignition), cooling system, exhaust system, lubrication system
Drivetrain:
Manual transmission, automatic transmission, clutch, driveshafts, differential, axles
Chassis:
Suspension (front and rear), steering system, brakes (front disc, rear drum/disc depending on model), wheels and tires
Electrical:
Battery, charging system (alternator), starting system, lighting, instrumentation, infotainment system, wiring diagrams for all systems
Body:
Body construction, interior trim, exterior trim, doors, windows, seats, HVAC system (heating, ventilation, air conditioning)
Maintenance:
Oil changes, filter replacements, fluid checks and changes, spark plug replacement, brake pad/shoe replacement, belt inspection/replacement
Repair:
Engine component overhaul (pistons, rings, bearings, valves), transmission rebuild, brake caliper overhaul, power steering pump replacement, suspension component replacement (shocks, control arms)
Diagnostics:
Troubleshooting common drivability issues, electrical system diagnostics, identifying causes of noises and leaks
Installation:
Component installation (e.g., brake rotors, starter motor), accessory installation (if covered)
Depth:
Comprehensive: Covers everything from basic scheduled maintenance to complete engine and transmission overhauls, including detailed electrical troubleshooting and component specifications.
File Quality:
High-resolution scans, clear text for readability and searchability (if digital).
Print Clarity:
Sharp images, clear diagrams, easy-to-read text (for printed versions).
Binding:
Durable binding suitable for workshop use (e.g., spiral-bound, saddle-stitched, hardcover).
Paper Quality:
Heavy-duty paper stock to withstand workshop conditions.
Configuration:
Inline 4-cylinder and Inline 6-cylinder
Displacement Options:
1.8L (M10B18), 2.3L (M20B23), 2.7L (M20B27 'Eta')
Fuel System Type:
Bosch LE-Jetronic or Motronic fuel injection
Horsepower Range:
Approx. 100 hp (318i) to 130 hp (325e), 148 hp (323i)
Torque Range:
Approx. 100 lb-ft to 155 lb-ft (depending on engine)
Ignition System:
Electronic Ignition (Distributor-based)
Transmission Type Std:
4-speed or 5-speed Manual Transmission
Transmission Type Opt:
3-speed or 4-speed Automatic Transmission (e.g., ZF 4HP22)
Clutch Type:
Single dry plate, hydraulically actuated
Differential:
Open differential standard, Limited Slip Differential (LSD) optional on performance models.
Body Styles:
2-door Coupe, 4-door Sedan, Convertible, Wagon (Touring - E30 Touring introduced later, but E30 chassis is the base).
Wheelbase Approx:
104.3 inches (2649 mm)
Length Approx:
170-171 inches (4318-4343 mm) depending on body style.
Curb Weight Range:
Approx. 2600-3000 lbs (1180-1360 kg) depending on model and equipment.
Federal Crash Test Ratings:
NHTSA ratings available but not standardized as today; generally considered robust for its era.
Braking System:
Front ventilated discs, rear discs or drums depending on model. Power assisted.
Antilock Brakes:
Optional on some models, particularly later E30s, but not standard on all 1986 models.
Seatbelts:
3-point front seat belts, likely lap belts in the rear for early models.
Body Structure:
Reinforced safety cage, crumple zones.
Audio System:
Factory fitted AM/FM radio, cassette player. Options for upgraded speakers and amplifiers.
Dashboard Features:
Analog gauges for speed, RPM, fuel, temperature. Warning lights for various systems.
Cruise Control:
Optional on many models.
Original Connectivity:
Limited to factory radio and speaker systems. No modern connectivity features.
Oil Change Interval:
Typically every 5,000-7,500 miles or 6-12 months, whichever comes first (owner's manual or manual specific).
Timing Belt Interval:
For M20 engines, typically 30,000-50,000 miles or as specified in the manual due to potential failure leading to catastrophic engine damage.
Coolant Flush Interval:
Every 2-3 years or as per manual recommendations.
Engine Oil Spec:
API SG or higher, SAE 20W-50 or 10W-40 depending on climate (e.g., Castrol GTX, Valvoline).
Coolant Spec:
BMW Blue or green ethylene glycol based coolant mixed 50/50 with distilled water.
Transmission Fluid Manual:
GL-4 gear oil (e.g., Red Line MT-90 or equivalent).
Transmission Fluid Auto:
Dexron II or III equivalent for ZF automatic transmissions.
Cooling System:
Plastic radiator tanks can degrade, thermostat housing leaks, water pump failure.
Engine:
Head gasket failures, oil pan leaks, fuel injector issues, worn valve stem seals, timing belt failure on M20 engines.
Electrical:
Corroded connectors, failing instrument cluster components, headlight switch issues, perished wiring insulation.
Suspension:
Worn control arm bushings, trailing arm bushings, shock absorber failure, ball joint wear.
Bmw Legacy:
BMW's reputation for engineering excellence, performance, and luxury sedan market presence.
E30 Introduction:
The E30 generation replaced the E21 and was produced from 1982 to 1994. The 1986 model year represents a mid-cycle refinement or continued iteration of the early E30 design.
Key E30 Variants:
318i, 325, 325e (eta), 323i, M3 (high-performance variant).
Production Period:
1982-1994
Manufacturing Locations:
Germany (primarily Munich), South Africa, and other global assembly plants.
Car And Driver 10Best:
The BMW 3 Series (E30) was frequently recognized on Car and Driver's '10Best' lists during its production years, highlighting its performance and handling.
Automotive Journalism Acclaim:
Praised for its driving dynamics and overall quality, establishing BMW's sporty image.
