Segment:
Compact Executive Sedan/Coupe
Reputation:
The E30 generation is renowned for its driving dynamics, build quality, and sporty heritage.
Competitors 1986:
Mercedes-Benz W201 (190E), Audi 80/90, Alfa Romeo 75, Saab 900.
Driving Dynamics:
Rear-wheel drive, near-perfect 50/50 weight distribution, independent suspension.
Build Quality:
Typical BMW robust construction and attention to detail for its era.
Engine Mechanical:
Engine overhaul, cylinder head, block, pistons, crankshaft, camshaft, timing, lubrication system, cooling system.
Engine Management:
Fuel injection (Bosch Motronic), ignition system, sensor diagnostics, ECU.
Transmission Manual:
Clutch, gearbox overhaul, gear selection, driveshafts.
Transmission Automatic:
Automatic gearbox overhaul, torque converter, shifting mechanisms, cooling.
Suspension:
Front and rear suspension, struts, shocks, springs, control arms, bushings, alignment specifications.
Steering:
Steering rack, power steering pump, tie rods, steering column, universal joints.
Brakes:
Brake system overhaul, calipers, master cylinder, brake lines, ABS (if equipped), parking brake, rotor and pad specifications.
Electrical System:
Wiring diagrams, battery, alternator, starter motor, fuses, relays, lighting systems, horn.
Body And Interior:
Body panel removal and installation, door mechanisms, window regulators, seats, dashboard, trim components.
Climate Control:
HVAC system, heater core, blower motor, air conditioning (if equipped), refrigerant handling.
Exhaust System:
Exhaust manifold, catalytic converter, muffler, pipes, hangers.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, spark plug replacement, fluid checks.
Troubleshooting:
Diagnostic procedures for common issues, fault finding for engine, electrical, and mechanical systems.
Repair Overhaul:
Step-by-step instructions for component removal, disassembly, repair, reassembly, and installation.
Diagnostics:
Identification of symptoms, diagnostic flowcharts, interpretation of error codes (where applicable).
Specifications:
Torque values, clearances, fluid capacities, pressure specifications, alignment angles.
Depth:
Comprehensive technical information suitable for professional mechanics and experienced DIY enthusiasts. Covers from basic maintenance to complete engine and transmission rebuilds.
Oil Change Interval:
Typically every 5,000-7,500 miles (8,000-12,000 km) or annually, consult manual for specifics.
Timing Belt Chain:
M10 engine uses a timing chain, which generally does not require periodic replacement but should be inspected for wear/noise.
Major Service:
Commonly around 60,000 miles (100,000 km) including spark plugs, filters, and thorough inspection.
Engine Oil:
API SG or SH, SAE 15W-40 or 20W-50. Refer to manual for exact BMW specification (e.g., BMW High Performance) and viscosity based on temperature.
Coolant:
BMW Blue Coolant or equivalent ethylene glycol-based antifreeze with corrosion inhibitors. Typically a 50/50 mix with distilled water.
Transmission Fluid Manual:
GL-4 Hypoid Gear Oil, SAE 75W-90 or 80W-90.
Transmission Fluid Automatic:
Dexron II or III automatic transmission fluid (ATF).
Brake Fluid:
DOT 3 or DOT 4 brake fluid.
Rust Prone Areas:
Wheel arches, rocker panels, jacking points, battery tray, rear shock towers.
Engine M10:
Can suffer from oil leaks (valve cover gasket, oil pan gasket), potential head gasket issues if overheated, wear on fuel injectors/fuel pump over time.
Electrical:
Corrosion on grounds, aging wiring looms, issues with the Motronic control unit, dashboard warning lights.
Suspension Wear:
Worn bushings (control arm, sway bar), worn strut mounts, premature ball joint wear.
Cooling System:
Cracked plastic radiator tanks, failing water pump, old coolant hoses leading to leaks.
Bmw Legacy:
BMW's reputation for performance, luxury, and engineering excellence.
E30 Introduction:
The E30 generation replaced the E21 3 Series in 1982 and was produced until 1991 (in Europe).
E30 Positioning:
The E30 established the modern 3 Series formula: compact dimensions, rear-drive bias, and engaging driving experience.
E30 Production Years:
1982-1991
E30 Variant Development:
The 316i was an entry-level model, often featuring the fuel-injected M10 engine for improved efficiency and emissions over carbureted versions.
