Vehicle Market Segment:
Compact executive car (sedan and coupe variants predominantly)
Key Competitors:
Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Volvo 240
Vehicle Strengths:
Renowned BMW driving dynamics, robust engineering, classic styling, rear-wheel drive platform, relatively affordable entry into premium brand
Benefit To Owner:
Empowers owners and independent mechanics with comprehensive, factory-level repair and maintenance information, reducing reliance on expensive dealership services.
Ideal User:
BMW E30 owners, classic car enthusiasts, independent automotive technicians, DIY mechanics.
Engine Mechanical:
Complete overhaul, timing belt/chain, lubrication, cooling system, fuel injection (Bosch L-Jetronic/Motronic), exhaust system
Engine Electrical:
Ignition system, starter, alternator, ECU diagnostics, wiring diagrams
Transmission:
Manual (Getrag 240) and Automatic (ZF 4HP22) transmission removal, installation, and overhaul; clutch service
Drivetrain:
Driveshafts, differential, rear axle assembly
Suspension:
Front struts, rear semi-trailing arms, bushings, shock absorbers, springs
Steering:
Steering rack, power steering system, steering column
Brakes:
Front disc brakes, rear drum brakes (or disc on some models), brake lines, master cylinder, caliper service
Electrical System:
Lighting system, interior electronics, fuse box diagrams, power windows, central locking
Bodywork:
Body panel removal/installation, door mechanisms, interior trim, glass replacement
HVAC:
Heating, ventilation, and air conditioning system service
Routine Maintenance:
Oil change intervals, filter replacements, spark plug service, fluid checks and changes
Diagnostics And Troubleshooting:
Step-by-step fault finding for common issues across all systems
Engine Rebuild:
Detailed instructions for engine disassembly, inspection, and reassembly
Transmission Repair:
Comprehensive guide to overhauling both manual and automatic transmissions
Brake System Overhaul:
Service procedures for calipers, master cylinder, and brake lines
Suspension Component Replacement:
Guidance on replacing struts, shocks, bushings, and control arms
Electrical Component Diagnosis:
Troubleshooting starter, alternator, ignition, and lighting issues
Fuel System Service:
Fuel injector testing and replacement, fuel pump service
Cooling System Service:
Radiator, water pump, and thermostat replacement
Depth Of Information:
Complete from basic maintenance to full engine and transmission rebuilds, including detailed diagnostic procedures and wiring diagrams.
Engine Type:
Inline 4-cylinder, SOHC
Displacement:
1.8 Liters (1795 cc)
Bore X Stroke:
89.0 mm x 71.0 mm
Compression Ratio:
8.5:1 (typical for early models)
Horsepower:
105 hp @ 5800 rpm (approximate)
Torque:
107 lb-ft @ 3250 rpm (approximate)
Fuel Delivery:
Bosch L-Jetronic or Motronic electronic fuel injection
Fuel Type:
Unleaded gasoline (87 octane or higher recommended)
Oil Capacity:
4.0 Liters (4.2 US quarts) with filter change
Recommended Oil:
API SF or SG, SAE 10W-40 or 15W-50 depending on climate
Standard Transmission Type:
4-speed Manual (Getrag 240)
Optional Transmission Type:
3-speed Automatic (ZF 3HP22) or 4-speed Automatic (ZF 4HP22) on later models
Clutch Type:
Single dry plate, hydraulic actuation
Automatic Transmission Fluid:
Dexron III (or equivalent)
Audio System:
Factory AM/FM radio with cassette player, optional CD player on later models.
Speaker Configuration:
Typically 4-6 speakers (door, dashboard, rear parcel shelf).
Traction Control:
Not typically available on the 318i model of this era.
Auxiliary Input:
Not factory equipped; aftermarket solutions are common.
Headlight Type:
Halogen sealed beam or replaceable bulbs depending on the specific year and market. Fog lights often optional.
Oil Change Interval:
Every 5,000-7,500 miles or 6-12 months (recommendation based on usage and oil type)
Air Filter Replacement:
Every 15,000-30,000 miles or as needed based on conditions
Spark Plug Replacement:
Every 30,000 miles (typically)
Coolant Flush:
Every 2-3 years or 30,000 miles
Brake Fluid:
DOT 3 or DOT 4
Coolant:
BMW Blue Antifreeze/Coolant or equivalent ethylene glycol based with corrosion inhibitors (50/50 mix with distilled water)
Power Steering Fluid:
BMW Power Steering Fluid or Dexron III
Common E30 Issues:
Eccentric shaft sensor failure (M10), fuel distributor issues, fuel pump failure, coolant leaks (hose cracks, water pump seal), strut mount wear, subframe cracks (rear), window regulator failure, door panel clips brittle.
Manual Utility For Issues:
The manual provides diagnostic procedures and part replacement guides for addressing these common E30 concerns.
Bmw Engineering Philosophy:
Focus on 'The Ultimate Driving Machine', emphasizing performance, handling, and driver engagement.
E30 Introduction Year:
1982
E30 Generations:
First generation 3 Series to be offered in a four-door sedan body style, alongside the coupe and convertible.
318I Positioning:
Served as the entry-level model in many markets, offering BMW quality and driving experience at a more accessible price point.
Production Period:
1982-1994 (E30 platform)
Manufacturing Locations:
Germany, South Africa, USA (for specific markets)
