Model Generations Covered:
E30
Model Years Covered:
1984, 1985, 1986, 1987, 1988, 1989, 1990
Historical Significance:
The E30 3 Series cemented BMW's reputation for producing sporting sedans and coupes, offering a compelling blend of performance, handling, and practicality. It competed with marques like Mercedes-Benz, Audi, and Alfa Romeo.
Key Competitors:
Mercedes-Benz W201 (190E), Audi 80/90, Alfa Romeo 75
Driving Dynamics:
Renowned for its balanced chassis, precise steering, and rear-wheel-drive platform, offering an engaging driving experience.
Design Philosophy:
Classic BMW design language, with a focus on driver ergonomics and functional aesthetics.
Engine Systems:
Engine mechanical, fuel delivery, ignition, emissions control, cooling, lubrication
Transmission Systems:
Manual transmission, automatic transmission, clutch system, drivetrain
Suspension Steering Brakes:
Front and rear suspension, steering system, brake system (hydraulic, mechanical components, ABS if applicable)
Electrical Systems:
Wiring diagrams, lighting, charging system, starting system, instrumentation, power accessories
Body And Chassis:
Body panel repair, interior trim, glass, seals, chassis lubrication
Routine Maintenance:
Oil change, filter replacement, fluid checks and top-offs, spark plug replacement, belt inspection/replacement
Major Repairs:
Engine overhaul, transmission rebuild, brake system overhaul, suspension component replacement
Troubleshooting:
Diagnostic procedures for common malfunctions, symptom-based troubleshooting guides
Component Replacement:
Step-by-step instructions for replacing individual components (e.g., alternator, water pump, starter motor, brake calipers)
Diagnostic Capabilities:
Detailed diagnostic flowcharts, component testing procedures, fault code interpretation (OBD I era)
Rebuild Instructions:
Comprehensive instructions for rebuilding engines, transmissions, and other major components, including torque specifications and clearances
Wiring Diagrams:
Detailed, component-level electrical wiring diagrams for all vehicle systems
Engine Code Examples:
M10 (4-cylinder, e.g., 318i), M20 (6-cylinder, e.g., 325i, 325e)
Engine Displacements Offered:
1.8L, 2.0L, 2.5L, 2.7L (depending on market and model)
Horsepower Range:
Approx. 105 hp (318i) to 170 hp (325i)
Torque Range:
Approx. 105 lb-ft (318i) to 155 lb-ft (325i)
Fuel Injection:
Bosch L-Jetronic, Motronic (engine control units)
Fuel Type:
Unleaded gasoline (premium recommended)
Standard Transmission Type:
4-speed or 5-speed manual transmission (Getrag)
Optional Transmission Type:
3-speed or 4-speed automatic transmission (ZF)
Clutch Type:
Single dry plate, hydraulically actuated
Differential Options:
Open differential, optional limited-slip differential (LSD)
Body Styles Offered:
2-door sedan (Saloon), 4-door sedan (Saloon), convertible, coupe, wagon (Touring - later models, may not be fully covered in all manuals)
Curb Weight Range:
Approx. 2500-3000 lbs (1135-1360 kg)
Crash Test Performance:
Reflects safety standards of the era; may not have modern standardized ratings. Focus on occupant protection features of the time.
Braking System:
Front discs, rear drums (standard on many models), optional rear discs on performance variants. ABS available on some models later in production.
Seat Belts:
Three-point seat belts with pretensionsers available.
Chassis Structure:
Reinforced safety cell, crumple zones.
Audio System:
Factory-installed cassette players, optional CD players, basic speaker systems.
Climate Control:
Manual HVAC systems, optional air conditioning.
Anti Lock Brakes:
Optional ABS on select models, primarily later production years.
Auxiliary Inputs:
None from factory; aftermarket solutions required for modern device connectivity.
Oil Change Interval:
Typically every 5,000-7,500 miles or 6-12 months, depending on driving conditions and oil type. Refer to specific model year recommendations.
Timing Belt Replacement:
For M20 engines, typically every 50,000-60,000 miles or 5 years. M10 engines use a timing chain.
Engine Oil Type:
API SG/SH or ACEA A2/A3 rated, viscosity typically 15W-40 or 10W-40 for older models, 5W-30 or 5W-40 for later and colder climates. Consult manual for exact specs.
Coolant Type:
Ethylene glycol based coolant, typically blue or green. BMW recommends specific G48 coolant or equivalent.
Transmission Fluid:
Manual: GL-4 rated gear oil (e.g., SAE 75W-90). Automatic: Dexron II or III equivalent.
Common Wear Items:
Suspension bushings (control arms, sway bars), fuel injectors, fuel pumps, ignition coils, cooling system components (radiator, water pump, hoses).
Rust Prone Areas:
Fender arches, rocker panels, battery tray area, rear quarter panels, sunroof drains.
Engine Specific Issues:
M20 starter motor heat soak, M10 head gasket issues if overheated.
Bmw Legacy:
BMW has a long history of producing driver-focused vehicles, building on its pre-war and post-war engineering prowess.
E30 Predecessor:
The E30 succeeded the E21 3 Series.
E30 Successor:
The E30 was succeeded by the E36 3 Series.
Production Period:
1982-1994 (global, with phased introduction across markets and body styles)
Key Variants:
E30 M3 (iconic motorsport homologation special), E30 convertible, E30 Touring (wagon).
Automotive Press Acclaim:
Consistently praised by automotive journalists for its driving dynamics and sport-sedan credentials. Named to Car and Driver's Ten Best list multiple times.
Track Day Reputation:
Highly regarded in enthusiast circles for its capability as a track-day car, especially the E30 M3 variant.
Value Retention:
Well-maintained E30 models, particularly desirable variants, have shown strong value retention and appreciation among collectors.
