🏷️ Basic Information Identification Make: BMW Model: 3 Series Sub Models: 325, 325e, 325es, 325is Codes Chassis Code: E30 Engine Codes: M20B27 (325e/es), M20B25 (325/is) 👋 Introduction Market Position Segment: Compact Executive Sports Sedan/Coupe Competitive Analysis Competitors: Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Ford Sierra XR4i, Opel Monza Key Features Driving Dynamics: Renowned for its balanced chassis, rear-wheel drive dynamics, and driver-focused cockpit Design Philosophy: Iconic E30 design, a blend of sportiness and practicality, representing BMW's core values Value Proposition Manual Benefit: Essential resource for owners and mechanics to maintain, diagnose, and repair the E30 325 models, preserving their performance and value 📋 Manual Details Coverage Areas Years Covered: 1984, 1985, 1986, 1987, 1988, 1989, 1990 Page Count Total Pages: 554 Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, fuel system, ignition system, cooling system, lubrication system, exhaust system, transmission (manual and automatic), clutch, driveshaft, differential, axles Chassis: Suspension (front and rear), steering system, braking system (including ABS where applicable), wheels and tires Electrical: Battery, charging system, starting system, lighting, instrumentation, engine control unit (ECU), body control modules, wiring diagrams for all major systems Body And Interior: Body panels, doors, windows, seats, HVAC system, interior trim, convertible top mechanism (if applicable) Procedures Included Maintenance: Scheduled maintenance, fluid checks and changes, filter replacements, tune-ups, inspections Diagnostics And Troubleshooting: Step-by-step diagnostic procedures for common and uncommon faults, fault code interpretation (where applicable), electrical troubleshooting guides Repair And Rebuild: Detailed instructions for disassembly, repair, and reassembly of all major components, engine rebuild procedures, transmission overhaul, brake system overhauls Specifications And Tolerances: Torque specifications for all fasteners, component measurements, critical clearances and tolerances Technical Depth Depth: Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds, detailed electrical troubleshooting with wiring diagrams 📊 Manual Specifications File Format File Type: PDF Searchability: Text-searchable Print Quality Printability: Printable pages Binding Type Binding: N/A (Digital PDF) Paper Type Paper Quality: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type 325E Es: M20B27 Inline 6-cylinder, SOHC, 2.7 Liter (2693cc) Engine Type 325 Is: M20B25 Inline 6-cylinder, SOHC, 2.5 Liter (2494cc) Performance 325E Es Horsepower 325E Es: 121 hp @ 4800 rpm (later models 127 hp) Torque 325E Es: 170 lb-ft @ 3250 rpm (later models 170 lb-ft @ 3200 rpm) Performance 325 Is Horsepower 325 Is: 168 hp @ 5800 rpm Torque 325 Is: 164 lb-ft @ 4750 rpm Fuel System Fuel Delivery: Bosch L-Jetronic (325e/es) / Motronic (325/is) Fuel Injection Fuel Type: Unleaded Gasoline Engine Design Block Material: Cast Iron Head Material: Aluminum Alloy Cooling System Coolant Type: BMW Blue Antifreeze/Coolant (or equivalent ethylene glycol based) Lubrication System Oil Capacity: Approx. 4.5 - 5.0 Liters (with filter, check manual for exact spec) Recommended Oil Viscosity: 10W-40 or 20W-50 (depending on climate, consult manual) 🔧 Transmission Standard Transmission Type 325E Es: Getrag 260 5-speed manual transmission (standard on 'es'), optional 3-speed ZF automatic (standard on 'e') Transmission Type 325 Is: Getrag 260 5-speed manual transmission (standard on 'is'), optional 4-speed ZF automatic Features Rear Axle Ratio: Varies by model and transmission (e.g., 3.64 for 325is, 2.79 for 325e automatic) Fluid Specifications Manual Transmission Fluid Type: Dexron III ATF or SAE 75W-90 GL-4 gear oil (check manual for specific models/units) Automatic Transmission Fluid Type: Dexron III ATF 📐 Dimensions Exterior Wheelbase: Approx. 101.2 inches (2570 mm) Length: Approx. 170.3 inches (4325 mm) Width: Approx. 67.1 inches (1704 mm) Height: Approx. 55.2 inches (1402 mm) Weights Curb Weight Range: Approx. 2700-3000 lbs (1225-1360 kg), varies by model and options Gross Vehicle Weight Rating: Refer to vehicle's VIN plate 🛡️ Safety Features Ratings Crash Test Performance: As per 1980s standards; generally considered safe for its era, but lacks modern safety features. Manual covers safety systems of the time. Active Features ABS: Optional on some models (standard on 'is' in later years), covered in the manual Passive Features Seat Belts: 3-point front and rear seat belts Driver Airbag: Not standard on most models in this range, optional on some later E30s. Manual will detail any equipped systems. Crumple Zones: Front and rear crumple zones integral to the chassis design 💡 Technology Features Infotainment Audio System: Factory AM/FM/Cassette player, often with amplifier and premium speaker options. Manual covers system operation and basic troubleshooting. Driver Assistance ABS System: Details on the operation, troubleshooting, and maintenance of the Bosch ABS system (where equipped) are provided. Connectivity No Modern Connectivity: No Bluetooth, USB, or smartphone integration in factory form. Manual focuses on the vehicle's original technology. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000-7,500 miles or 12 months, but consult manual for exact recommendations based on driving conditions. Spark Plug Replacement: Refer to manual; typically around 30,000 miles for standard plugs. Timing Belt Replacement: M20 engines use...