🏷️ Basic Information Identification Make: BMW Model: 3 Series Chassis Code: E30 Market Segment: Compact Executive/Sports Sedan & Coupe Generation Generation Designation: First Generation (E30) Codes Engine Codes Covered: M10 (318i), M20 (325e, 325es, 325i, 325is) 👋 Introduction Market Position Positioning: The E30 3 Series cemented BMW's reputation for sporty, driver-focused sedans and coupes in the premium compact segment, offering a compelling blend of performance, handling, and build quality. Competitive Analysis Competitors: Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Ford Sierra, Opel Vectra Key Features Driving Dynamics: Renowned for its balanced chassis, precise steering, and engaging driving experience, characteristic of BMW's 'Ultimate Driving Machine' philosophy. Engine Options: Offered a range of efficient 4-cylinder (318i) and potent inline-6 engines (325 models), providing a spectrum of performance. Body Styles: Available as a 2-door sedan, 4-door sedan, convertible, and a rare M3 variant (not covered in this specific manual). 📋 Manual Details Coverage Areas Vehicle Years Covered: 1984, 1985, 1986, 1987, 1988, 1989, 1990 Models Covered: 318i, 325, 325e, 325es, 325i, 325is Page Count Estimated Page Count: Thousands (comprehensive service manual) Manual Type Type: Service and Repair Manual Language Language: English Format Format: Digital Download (Immediate Availability) 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, fuel injection (K-Jetronic, L-Jetronic), ignition, exhaust, cooling system, lubrication system Drivetrain: Clutch, manual transmission (Getrag 260), automatic transmission (ZF 4HP22), driveshaft, differential, axles Suspension Steering: Front suspension (MacPherson strut), rear suspension (semi-trailing arm), power steering system, steering components Brakes: Front disc brakes, rear drum or disc brakes (model dependent), ABS (optional), brake system hydraulics, parking brake Electrical Electronics: 12V electrical system, battery, alternator, starter, lighting system, instrument cluster, diagnostic connectors, engine control unit (ECU), body control modules Body Chassis: Body construction, exterior panels, doors, windows, interior trim, bumpers, chassis components, corrosion protection Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspections and replacement Troubleshooting: Diagnostic procedures for engine, transmission, electrical, and other systems; common fault diagnosis Repair: Step-by-step repair instructions for major components and systems, including engine rebuilds, transmission overhauls, brake caliper replacement, suspension component repair Installation: Instructions for installation of specific parts and accessories Diagnostics: Detailed diagnostic flowcharts, component testing procedures, electrical circuit diagrams Technical Depth Depth: Comprehensive, covering from basic preventative maintenance to complex system overhauls and diagnostics, suitable for professional technicians and advanced DIY enthusiasts 📊 Manual Specifications File Format Format Details: Likely PDF, optimized for digital viewing and printing, potentially searchable text Print Quality Quality: High resolution for clear diagrams and text Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine 318I Engine: M10B18, 1.8-liter inline-4 cylinder, SOHC, 8 valves 318I Power: Approx. 101-105 hp @ 5800 rpm 318I Torque: Approx. 101-103 lb-ft @ 3250-3500 rpm 325E Engine: M20B27, 2.7-liter inline-6 cylinder, SOHC, 12 valves (designed for torque and efficiency, 'eta' engine) 325E Power: Approx. 121-127 hp @ 4800-5000 rpm 325E Torque: Approx. 170-174 lb-ft @ 3250-3500 rpm 325I Engine: M20B25, 2.5-liter inline-6 cylinder, SOHC, 12 valves 325I Power: Approx. 168-171 hp @ 5800-6000 rpm 325I Torque: Approx. 164-167 lb-ft @ 4300-4750 rpm Performance Acceleration 0 60 325I: Approx. 7.5-8.0 seconds Top Speed 325I: Approx. 135-140 mph Fuel System Fuel Injection 318I: Bosch L-Jetronic (later models may have Motronic) Fuel Injection 325E Es: Bosch Motronic Fuel Injection 325I Is: Bosch Motronic Recommended Fuel: Unleaded Premium Unleaded Gasoline (91+ Octane) 🔧 Transmission Standard Standard Transmission: Getrag 260 5-speed manual transmission Optional Optional Transmission: ZF 4HP22 4-speed automatic transmission Features Rear Wheel Drive: All E30 models are RWD Limited Slip Differential: Optional on 325is and some 325i models 📐 Dimensions Exterior Wheelbase: Approx. 101.2 inches (2570 mm) Length Sedan: Approx. 170.5 inches (4330 mm) Width: Approx. 65.4 inches (1660 mm) Height: Approx. 54.7 inches (1390 mm) Weights Curb Weight 318I: Approx. 2700-2850 lbs (1225-1293 kg) Curb Weight 325I: Approx. 2900-3100 lbs (1315-1406 kg) Cargo Trunk Capacity: Approx. 14.3 cubic feet (405 liters) 🛡️ Safety Features Ratings NHTSA Ratings: Likely 4-star frontal impact rating from NHTSA (contemporary testing standards) Active Features Anti Lock Brakes: Optional ABS system available on most models Passive Features Airbags: Driver-side airbag became standard in later model years (late 80s/early 90s) Seatbelts: 3-point front and rear seatbelts Crumple Zones: Engineered with front and rear crumple zones for impact absorption 💡 Technology Features Infotainment Audio System: Factory AM/FM radio with cassette player, optional premium sound systems (e.g., Blaupunkt, Nakamichi). Driver Assistance Cruise Control: Available as an option on many models. Connectivity OBD Port: Early OBD-I diagnostic port, requiring specific BMW connectors and scanners for advanced diagnostics. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000-7,500 miles or 12 months, whichever comes first (depending on driving conditions and oil used). Filter Replacement Interval: Oil filter with every oil change; air filter and fuel filter every 15,000-30,000 miles....