Segment:
Compact executive sedan/coupe. Competed with Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75.
Era Positioning:
Affordable entry into BMW ownership, focused on driving dynamics and build quality.
Strengths Vs Competitors:
Superior handling and driver engagement compared to many contemporaries, robust build quality, strong brand image.
Driving Dynamics:
Renowned for its balanced chassis, rear-wheel drive, and communicative steering, characteristic of the E30 generation.
Engine Reliability:
The M10 engine is known for its robustness and simplicity, although regular maintenance is crucial.
Engine Mechanical:
Full coverage: Engine assembly, cylinder head, block, pistons, crankshaft, camshaft, timing, lubrication, cooling.
Fuel System:
Bosch L-Jetronic fuel injection system details, fuel pump, injectors, fuel pressure regulator, troubleshooting.
Ignition System:
Distributor ignition system, coil, spark plugs, timing adjustments, troubleshooting.
Transmission Manual:
Service and repair for the Getrag 245 5-speed manual transmission, clutch system.
Transmission Automatic:
Information likely includes operation and basic service for the automatic transmission option (e.g., ZF 4HP22), though focus is usually on manual.
Drivetrain:
Rear-wheel drive system, driveshaft, differential, axle shafts, universal joints.
Suspension:
Front and rear suspension components, struts, shock absorbers, control arms, bushings, alignment specifications.
Steering:
Steering rack, tie rods, power steering system (if equipped), steering column.
Brakes:
Front and rear disc brakes (likely vented front), master cylinder, brake lines, calipers, parking brake system, bleeding procedures.
Electrical System:
Wiring diagrams, battery, alternator, starter motor, lighting, fuses, relays, ignition switch, instrument cluster.
Body And Chassis:
Body panel removal/installation, door mechanisms, glass, interior trim, basic chassis information.
Heating And Ac:
HVAC system components, blower motor, heater core, A/C compressor and system (likely R12 refrigerant).
Maintenance:
Routine servicing: oil changes, filter replacements, spark plug service, brake fluid flush, coolant flush, belt checks.
Troubleshooting:
Diagnostic procedures for common issues, electrical system fault finding, engine performance problems.
Repair:
Detailed step-by-step repair instructions for all major mechanical and electrical components.
Rebuild:
Engine and transmission rebuild procedures, including component specifications and clearances.
Diagnostics:
Component testing procedures, electrical resistance values, sensor readings, diagnostic codes (OBD-I era, though not extensive).
Torque Specifications:
Comprehensive list of torque values for all critical fasteners.
Depth:
Comprehensive, suitable for professional mechanics and advanced DIY enthusiasts. Covers everything from basic maintenance to full engine and transmission overhauls.
Body Styles:
2-door Sedan (E30), 4-door Sedan (E30), Convertible (E30), Touring (Wagon - less common for 318i).
Length:
Approx. 4325-4410 mm (170.3-173.6 in) depending on specific E30 variant.
Width:
Approx. 1640-1675 mm (64.6-66.0 in)
Height:
Approx. 1360-1415 mm (53.5-55.7 in)
Curb Weight:
Approx. 1150-1250 kg (2535-2755 lbs)
Gross Vehicle Weight Rating:
Not Specified in product data, but available in manual.
Oil Change:
Typically every 5,000-7,500 miles or 6-12 months, depending on driving conditions. Check manual for specific recommendations.
Spark Plugs:
Replace every 20,000-30,000 miles, depending on plug type (copper vs. platinum, though likely copper for this era).
Coolant Flush:
Every 2-3 years or 30,000-50,000 miles.
Brake Fluid Flush:
Every 2 years.
Engine Oil:
Refer to manual for viscosity (e.g., 15W-40, 20W-50 or 10W-40, 5W-40 synthetic depending on climate and original spec). API service rating SN/SM or higher recommended for modern oils.
Coolant:
BMW Blue or Green antifreeze (silicate-based) or modern equivalent compatible with older engines. Typically a 50/50 mix with distilled water.
Brake Fluid:
DOT 3 or DOT 4 (DOT 4 preferred for higher boiling point).
Engine M10:
Oil leaks from oil pan gasket, valve cover gasket, front crank seal. Coolant leaks from hoses, thermostat housing, water pump. Timing belt tensioner/idler pulley wear. Fuel distributor issues on L-Jetronic.
Electrical:
Corroded grounds, failing fuse box connections, aged wiring harness insulation, dashboard indicator light failures.
Suspension:
Worn control arm bushings, strut mounts, tie rod ends. Sagging rear springs.
Rust:
Common areas include wheel arches, rocker panels, door bottoms, battery tray, strut towers. E30 chassis is susceptible to rust.
