🏷️ Basic Information Identification Make: BMW Model: M3 Chassis Code: E30 Model Years Covered: 1986, 1987, 1988, 1989, 1990, 1991, 1992 Codes Engine Codes: S14B23 (2.3L), S14B25 (2.5L) 👋 Introduction Market Position Target Audience: BMW E30 M3 owners, DIY enthusiasts, professional mechanics Competitive Analysis Value Proposition: Provides factory-level repair information, enabling significant cost savings on maintenance and repairs. Key Features Authenticity: Original manufacturer's manual, same as used by local service/repair shops. Completeness: Complete and intact, no missing or corrupt parts/pages. Ease Of Use: Includes numbered instructions, bold figure numbers, detailed illustrations, and an easy-to-use table of contents. 📋 Manual Details Coverage Areas Primary Coverage: All E30 M3 models/engines/trims/transmissions Page Count Estimated Pages: Hundreds (Exact count not specified, but described as comprehensive) Manual Type Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Service, repair, troubleshooting, fuel injection, fuel system, cooling system, emission system, engine control system Transmission: Service, repair Brakes: Brake system service and repair Electrical: Electrical system service, troubleshooting, wiring diagrams Suspension Steering: Suspension, steering systems Chassis Body: Chassis, body, interior, restraint system Drivetrain: Differential, drive axle service/repair Comfort: Heater/Air Conditioning (HVAC) service Procedures Included Maintenance: General maintenance, periodic lubrication Diagnostics: Troubleshooting, diagnostic information Repair: Detailed substeps for repair procedures, disassembly, assembly, cleaning, reinstallation Technical Depth Depth: Professional technician level, comprehensive diagnostic, repair, and maintenance information 📊 Manual Specifications File Format File Type: PDF Readability Requirements: Adobe PDF Reader Print Quality Printability: Full Printable Zoom Functionality: Zoom IN/OUT supported Binding Type Binding: Digital Download (N/A for physical binding) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Inline-4 Cylinder (M1, S14) Performance 2.3L Horsepower: 192 hp (DIN) for 1986-1988 models 2.3L Torque: 235 Nm (173 lb-ft) for 1986-1988 models 2.5L Horsepower: 215 hp (DIN) for 1989-1991 models (Evo models varied) 2.5L Torque: 245 Nm (181 lb-ft) for 1989-1991 models Fuel System Fuel Delivery: Bosch Motronic electronic fuel injection Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) 🔧 Transmission Standard Transmission Type: Getrag 265 5-speed manual transmission Optional Optional Transmission: N/A (Manual transmission was standard for the M3) Features Gear Ratios: Specific gear ratios available within the manual 📐 Dimensions Exterior Wheelbase: 2,560 mm (100.8 in) Length: 4,240 mm (167.0 in) Width: 1,700 mm (66.9 in) Height: 1,370 mm (53.9 in) Weights Curb Weight Approx: 1,200 - 1,300 kg (2,645 - 2,866 lbs) depending on year and spec Gvw Approx: 1,650 kg (3,638 lbs) 🛡️ Safety Features Ratings Crash Test Data: Limited public data for the era; E30 platform known for robust build Active Features ABS: Available on later models or as an option Passive Features Airbags: Driver airbag typically optional or absent on early models, standard on later versions Seatbelts: 3-point inertia reel seatbelts 💡 Technology Features Infotainment Audio System: Factory cassette or AM/FM radio systems, potentially with upgraded aftermarket units. Driver Assistance Traction Control: No traction control system as standard. Connectivity Auxiliary Input: N/A for factory systems; aftermarket solutions common. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 7,500 - 10,000 miles or 12 months, as per manual recommendations (refer to manual for specifics) Spark Plug Replacement: Varies by plug type, consult manual for specific intervals and torque values. Fluid Specifications Engine Oil Type: Refer to manual for specific viscosity (e.g., 20W-50, 10W-40, depending on climate and oil type) Engine Oil Capacity: Approximately 4.75 liters (5.0 US quarts) with filter change Coolant Type: BMW Blue Antifreeze/Coolant (G48) or equivalent silicate-free, ethylene glycol-based coolant Brake Fluid Type: DOT 4 brake fluid Transmission Fluid Type: Refer to manual for specific Getrag 265 fluid type and capacity Differential Fluid Type: Refer to manual for specific differential fluid type and capacity (e.g., synthetic SAE 75W-90 GL-5) Known Issues Common Issues: Subframe mounting reinforcement, VANOS (if applicable to later S14 variants), fuel injector seals, valve guide wear, cooling system components (water pump, hoses), rear shock mount fatigue. 📚 Vehicle History Brand Heritage Bmw Motorsport: Developed by BMW Motorsport GmbH to homologate the E30 for Group A Touring Car racing. Model Evolution Generations: First generation M3 (E30), a homologation special with significant chassis and engine revisions over standard E30 models. Production Period: 1986-1991 (North American market received models from 1987-1991) Production Manufacturing Locations: Germany (Munich and Regensburg) Production Volume: Approximately 17,970 units worldwide 🏆 Awards & Recognition Recognitions Motorsport Success: Numerous racing championships worldwide, including DTM, ETCC, and IMSA GTU. Collectible Status: Highly regarded as a modern classic and one of the most desirable M cars.