Segment:
Compact Executive / Sports Sedan
Target Audience:
Enthusiasts, DIY mechanics, professional automotive repair shops
Competitors Era:
Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Volvo 240
Driving Dynamics:
Renowned for its balanced chassis, rear-wheel drive dynamics, and engaging driving experience
Build Quality:
Typical BMW build quality, known for durability and longevity
Engine Reputation:
M20 inline-six engine celebrated for its smoothness and linear power delivery
Engine Mechanical:
Engine assembly, disassembly, rebuilding, cylinder head, pistons, crankshaft, camshafts, timing
Engine Management:
Fuel injection system (Bosch Motronic), ignition system, sensors, actuators, ECU diagnostics
Transmission Manual:
Manual gearbox overhaul, clutch replacement, driveshafts
Transmission Automatic:
Automatic gearbox service and repair (if applicable to 325 models covered)
Drivetrain:
Rear axle, differential, wheel bearings
Suspension:
Front and rear suspension components, shock absorbers, springs, bushings, alignment specifications
Steering:
Steering rack, power steering system, steering column, wheel alignment
Brakes:
Front and rear brake systems (disc brakes), hydraulic system, ABS (if equipped), parking brake
Electrical System:
Wiring diagrams, battery, alternator, starter motor, lighting, fuses, relays, dashboard instruments
Bodywork And Chassis:
Body panel removal and installation, chassis components, rust repair, interior trim
HVAC:
Heating, ventilation, and air conditioning system service
Fuel System:
Fuel tank, fuel pump, fuel lines, fuel filter
Cooling System:
Radiator, thermostat, water pump, coolant hoses, fan
Routine Maintenance:
Oil changes, filter replacements, fluid checks, spark plug replacement, belt adjustments
Troubleshooting:
Diagnostic procedures, fault finding for engine, electrical, and mechanical systems
Major Repairs:
Engine overhaul, transmission rebuild, suspension component replacement, brake system overhauls
Component Replacement:
Detailed instructions for replacing specific parts and components across all systems
Diagnostics:
OBD-I (On-Board Diagnostics) procedures and interpretation of diagnostic trouble codes (DTCs)
Torque Specifications:
Precise torque values for all critical fasteners
Wiring Diagrams:
Complete and detailed electrical system wiring schematics
Depth Of Information:
Detailed explanations, diagrams, and step-by-step instructions for both amateur and professional mechanics
Diagnostic Troubleshooting:
In-depth diagnostic flowcharts and troubleshooting guides for common and uncommon issues
Rebuilding Procedures:
Comprehensive instructions for rebuilding major components like engines and transmissions
Length:
Approx. 4345 mm (171.1 in)
Width:
Approx. 1678 mm (66.1 in)
Height:
Approx. 1380 mm (54.3 in)
Wheelbase:
Approx. 2565 mm (101.0 in)
Curb Weight:
Approx. 1270-1350 kg (2800-3000 lbs)
Gross Vehicle Weight Rating:
Varies by specific model and configuration
Towing Capacity:
Not typically specified or recommended for this model range
Oil Change Interval:
Every 5,000-7,500 miles (8,000-12,000 km) or 6-12 months, whichever comes first
Spark Plug Replacement:
Typically every 30,000 miles (48,000 km)
Coolant Flush:
Every 2 years or 30,000 miles (48,000 km)
Transmission Fluid Change Manual:
Check manual; generally considered 'lifetime' but recommended every 60,000 miles (100,000 km)
Transmission Fluid Change Automatic:
Recommended every 30,000-50,000 miles (48,000-80,000 km)
Engine Oil Type:
SAE 15W-40 or 10W-40 API SG or higher (check manual for precise specification)
Coolant Type:
BMW Blue Antifreeze/Coolant (G48) or equivalent ethylene glycol-based coolant with corrosion inhibitors
Transmission Fluid Manual:
GL-4 Gear Oil (e.g., 75W-90)
Transmission Fluid Automatic:
ZF TE-ML 11A or Dexron III (check manual for exact specification)
Power Steering Fluid:
ATF Dexron II or III
Engine Mounts:
Often prone to wear and cracking, leading to vibration
Cooling System Leaks:
Plastic thermostat housing, radiator end tanks, and hose connections can degrade and leak
Fuel Pump Reliability:
Early models may have had less robust fuel pumps
Window Regulators:
Mechanical components can wear out, leading to sticky or inoperable windows
Rust:
Common areas include wheel arches, rocker panels, and around windows
Biodegradable Wiring:
Some wiring insulation in BMWs of this era could become brittle over time
Bmw Philosophy:
BMW's commitment to 'The Ultimate Driving Machine' ethos
E30 Introduction:
The E30 platform succeeded the E21 and introduced significant advancements in chassis design and engineering
E30 Variants:
Included coupe, sedan, convertible, and touring (wagon) body styles, with various engine options (e.g., 318i, 325e, 325i, M3)
325 Introduction:
The 325 model was introduced to offer a more powerful and refined six-cylinder option within the E30 range
Production Years E30:
1982-1994 (global)
Production Location:
Primarily Dingolfing, Germany; also South Africa, USA (CKD kits)
