Segment:
Compact Executive Sedan/Coupe
Target Audience:
Individuals seeking a sporty, reliable, and engaging driving experience with a focus on driver feedback.
Key Competitors:
Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Volvo 240 Series.
Driving Dynamics:
Renowned for its balanced chassis, RWD layout, and responsive steering, characteristic of the BMW driving experience.
Build Quality:
High-quality interior materials and robust construction typical of BMW vehicles from this era.
Design:
Iconic E30 design by Claus Luthe, characterized by clean lines and a compact, purposeful stance.
Applicable Model Years:
1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991
Vehicle Variants Covered:
All 318i models (Sedan, Coupe, Convertible, Touring - where applicable for the year range)
Estimated Page Count:
Likely 500-1500+ pages (typical for comprehensive factory-level repair manuals of this era)
Manual Type:
Factory Service Manual / Repair Manual
Language:
English (Standard for most official BMW manuals of this period)
Format:
Downloadable Digital File (PDF)
Engine Mechanical:
Complete overhaul, cylinder head, block, crankshaft, pistons, connecting rods, timing components, cooling system, lubrication system, fuel injection system (Bosch L-Jetronic/Motronic).
Engine Management:
Ignition system (coil, distributor, spark plugs), fuel delivery, ECU (Engine Control Unit) diagnosis, sensor functions.
Transmission:
Manual transmission overhaul, clutch replacement, automatic transmission (if applicable for specific year 318i) diagnosis and repair, driveshaft, differential.
Suspension:
Front and rear suspension components, struts, shock absorbers, control arms, bushings, sway bars, wheel bearings.
Brakes:
Brake system hydraulics, master cylinder, brake calipers, brake pads, brake discs/rotors, rear drum brakes (if applicable), parking brake, ABS system diagnosis (if equipped).
Electrical System:
Wiring diagrams, starter motor, alternator, battery, lighting system (headlights, taillights, interior lights), fuses, relays, instrument cluster, power windows, locks.
Body And Chassis:
Body panel repair, door mechanisms, glass replacement, interior trim, chassis components, rust prevention.
Routine Maintenance:
Oil and filter changes, spark plug replacement, air filter replacement, coolant checks, belt inspection and replacement, brake fluid flush.
Troubleshooting:
Diagnostic procedures for common starting, running, electrical, and mechanical issues with step-by-step guidance.
Repair And Rebuild:
Detailed instructions for component removal, disassembly, inspection, repair, and reassembly for major vehicle systems.
Technical Specifications:
Torque specifications, clearances, timing settings, fluid capacities and types, electrical component values.
Depth Of Information:
Comprehensive, suitable for professional technicians and advanced DIY enthusiasts. Covers everything from basic maintenance to complete engine and transmission rebuilds.
Engine Type:
Inline-4 Cylinder, Naturally Aspirated
Engine Code Variant:
M10B18 (Common variant for 318i)
Displacement:
1.8 Liters (1766 cc)
Horsepower Typical:
Approximately 105-115 hp (depending on specific market and emission controls)
Torque Typical:
Approximately 145-155 Nm (107-114 lb-ft) (depending on specific market and emission controls)
Fuel Delivery:
Bosch L-Jetronic or Motronic electronic fuel injection
Fuel Type:
Unleaded Gasoline (Premium recommended)
Oil Change Interval:
Every 5,000-10,000 miles or 12 months (whichever comes first), depending on driving conditions and oil used.
Spark Plug Replacement:
Approximately 30,000 miles (standard copper plugs).
Coolant Flush:
Every 2-3 years or 30,000-40,000 miles.
Engine Oil Type:
API SG or SH, SAE 10W-30 or 10W-40 (check manual for specific viscosity for climate)
Coolant Type:
Ethylene Glycol based antifreeze (BMW Blue or equivalent).
Transmission Fluid Manual:
GL-4 Gear Oil (e.g., Mobil 75W-90 or Red Line MT-90)
Transmission Fluid Automatic:
Dexron III (or equivalent)
Rust Prone Areas:
Fender arches, rocker panels, trunk floor, around windshield and rear window seals.
Cooling System:
Plastic coolant expansion tank can become brittle and crack; water pump seals can leak.
Fuel System:
Fuel accumulator, fuel pump, and injector seals can degrade over time, leading to hard starting or rough idling.
Electrical:
Wiring harness degradation (especially in engine bay), faulty headlight relays, instrument cluster issues.
Suspension Bushings:
Control arm bushings, trailing arm bushings wear out, affecting handling and comfort.
Bmw Philosophy:
BMW's 'Ultimate Driving Machine' ethos, emphasizing sporty handling, performance, and build quality.
E30 Introduction:
The E30 platform replaced the E21 3 Series in 1982, becoming a benchmark for compact executive cars.
318I Positioning:
The 318i served as the entry-level model in many markets, offering a balance of fuel efficiency and BMW driving characteristics.
Production Period:
1982-1994 (for the E30 platform globally)
Manufacturing Locations:
Germany (Main), South Africa, USA (CKD kits), Thailand.
