Segment:
Compact Executive Sedan/Coupe
Target Audience:
Enthusiasts, independent repair shops, DIY mechanics working on E30 BMWs
Competitors 1985:
Mercedes-Benz 190E, Audi 80/90, Volvo 240 series, Alfa Romeo 75
Vehicle Philosophy:
Driving dynamics, build quality, sporty handling characteristic of BMW's 'Ultimate Driving Machine' ethos
Manual Value Proposition:
Provides critical technical data and procedures essential for maintaining and repairing a classic BMW
Engine:
Engine mechanicals, fuel system, ignition system, cooling system, lubrication system
Transmission:
Manual and Automatic Transmission overhauls and adjustments
Drivetrain:
Driveshafts, differentials, CV joints
Suspension:
Front and rear suspension components, alignment, shock absorbers, springs
Brakes:
Brake system hydraulics, disc and drum brake servicing, parking brake
Steering:
Steering rack, steering column, power steering system (if equipped)
Electrical:
Wiring diagrams, lighting, starter, alternator, battery, fuses, relays, diagnostics
Bodywork:
Body panel repair, doors, windows, trim, chassis components
HVAC:
Heating, Ventilation, and Air Conditioning (HVAC) system service and repair
Maintenance:
Routine maintenance checks, oil changes, filter replacements, fluid top-offs
Troubleshooting:
Diagnostic procedures for common problems, fault finding guides
Repair:
Step-by-step repair instructions for all major vehicle components
Rebuilds:
Engine and transmission rebuild procedures, including torque specifications and clearances
Diagnostics:
Electrical system diagnostics, fuel system troubleshooting
Depth:
Full mechanical and electrical workshop level repair
Engine Type:
Inline 4-cylinder, SOHC (Single Overhead Camshaft)
Displacement:
1.8 Liters (1766 cc)
Bore X Stroke:
89.0 mm x 80.0 mm
Compression Ratio:
8.8:1 (typical for M10B18)
Horsepower:
Approx. 101 hp @ 5800 rpm (DIN)
Torque:
Approx. 103 lb-ft @ 3250 rpm (DIN)
Fuel Delivery:
Bosch L-Jetronic or Motronic fuel injection
Fuel Type:
Unleaded gasoline (RON 91/95)
Ignition Type:
Distributor-based electronic ignition
Cooling Type:
Liquid-cooled
Oil Capacity:
Approx. 4.5 liters (4.8 US quarts) with filter
Transmission Type:
4-speed manual
Transmission Type:
3-speed automatic (ZF 3HP22)
Clutch Type:
Hydraulically operated single dry plate clutch
Transmission Fluid Manual:
API GL-4, SAE 75W-90 or 80W-90 (manual gearbox)
Transmission Fluid Automatic:
Dexron II (automatic gearbox)
Length:
Approx. 4325 mm (170.3 in)
Width:
Approx. 1674 mm (65.9 in)
Height:
Approx. 1380 mm (54.3 in)
Wheelbase:
Approx. 2570 mm (101.2 in)
Curb Weight:
Approx. 1150 kg (2535 lbs)
Gross Vehicle Weight Rating:
Approx. 1670 kg (3682 lbs)
Crash Test Data:
Limited data available for this era, but E30 chassis known for robust construction for its time.
Brakes:
Front ventilated discs, rear drums (standard)
ABS:
Optional on later E30 models, potentially available on late '85 models or not standard
Seat Belts:
Standard front seat belts, rear optional/lap belts
Steering Column:
Energy-absorbing steering column
Oil Change Interval:
Typically every 5,000-7,500 miles or 6-12 months (refer to manual for exact)
Spark Plug Replacement:
Approx. 20,000-30,000 miles
Timing Belt Replacement:
N/A (M10 engine uses a timing chain)
Engine Oil Type:
API SF or SG, SAE 10W-40 or 15W-40 (check manual for specific viscosity by temperature)
Coolant Type:
BMW approved ethylene glycol coolant with corrosion inhibitors (50/50 mix with distilled water)
Brake Fluid Type:
DOT 3 or DOT 4
Common Problems E30 M10:
Oil leaks (valve cover, oil pan), fuel injector issues, starter motor wear, coolant leaks (hose deterioration), rust (wheel arches, rocker panels, battery tray)
Dashboard Cracking:
Common for older E30s due to UV exposure; manual will not cover cosmetic repair but mechanical aspects.
Bmw Philosophy Early:
Focus on sporting sedans and coupes with rear-wheel drive and driver-centric design.
E30 Introduction:
Introduced in 1982 as the successor to the E21 3 Series, the E30 marked a significant step in BMW's compact executive car lineage.
318I Positioning:
The 318i was positioned as the entry-level model in the E30 range, offering a balance of efficiency and performance.
Production Years E30:
1982-1991
Manufacturing Locations:
Germany (Munich, Dingolfing)
