Segment:
Compact Executive Sedan/Coupe
Key Competitors:
Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Ford Sierra, Volvo 240 Series.
Strengths:
Renowned BMW driving dynamics, solid build quality, rear-wheel drive platform, upscale interior for its class.
Platform:
E30 platform, known for its robust chassis and excellent handling characteristics.
Design:
Iconic 'Bangle-era' BMW design with clean lines and a focus on driver ergonomics.
Engine:
Complete engine systems, including M40B18 engine overhaul, component diagnostics, fuel injection (Bosch Motronic), ignition system, cooling system, lubrication system.
Transmission:
Manual and Automatic Transmission service, repair, and overhaul. Clutch system, driveshafts, differential service.
Brakes:
Hydraulic brake system, ABS (if equipped), disc brake and drum brake service, fluid replacement, component replacement (calipers, master cylinder, lines).
Suspension Steering:
Front and rear suspension components (struts, control arms, bushings), steering system (rack and pinion), power steering, wheel alignment.
Electrical:
Complete electrical system, wiring diagrams, fuse box layout, lighting, starting and charging system, instrument cluster, diagnostics of common electrical faults.
Body Chassis:
Body panel repair, door mechanisms, glass replacement, interior trim removal/installation, chassis component servicing.
Climate Control:
HVAC system diagnosis and repair, A/C system servicing, heater core replacement.
Maintenance:
Scheduled maintenance, oil and filter changes, spark plug replacement, air filter replacement, coolant flush, brake fluid change.
Repair:
Engine rebuilds, transmission rebuilds, suspension component replacement, brake caliper rebuild, electrical component repair, bodywork repairs.
Diagnostics:
Troubleshooting guides for common problems, diagnostic procedures for engine performance, electrical faults, and drivability issues.
Rebuilding:
Detailed step-by-step instructions for rebuilding major components like the engine, transmission, and brake calipers.
Depth:
Comprehensive, from basic maintenance to full engine and transmission overhauls. Includes detailed torque specifications, tolerances, and diagnostic charts.
Engine Type:
Inline-4 Cylinder, DOHC (Double Overhead Camshaft)
Displacement:
1.8 Liters (1796 cc)
Horsepower:
113 hp @ 5600 rpm (approx.)
Torque:
165 Nm (122 lb-ft) @ 4250 rpm (approx.)
Fuel Delivery:
Bosch Motronic Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded Gasoline (91 Octane or higher recommended)
Coolant Type:
BMW Blue Coolant or compatible silicate-free ethylene glycol mixture.
Oil Type Spec:
API SG or ACEA A2/B2, SAE 15W-40 or 10W-40 (depending on climate). Consult manual for exact BMW specifications.
Block Material:
Cast Iron
Head Material:
Aluminum Alloy
Type:
4-Speed Manual (Getrag 240)
Type:
4-Speed ZF Automatic Transmission
Clutch Type:
Single Dry Plate, Hydraulic Operation
Manual Transmission Fluid:
API GL-4, SAE 75W-90 or 80W-90 gear oil. Consult manual for BMW specifications.
Automatic Transmission Fluid:
BMW ATF Fluid or equivalent Dexron II (or later, consult manual).
Body Styles:
2-Door Sedan (E30 Coupe), 4-Door Sedan (E30 Sedan).
Length:
Approx. 4325-4340 mm (170.3-170.9 in)
Width:
Approx. 1645-1675 mm (64.8-66.0 in)
Height:
Approx. 1365-1370 mm (53.7-53.9 in)
Curb Weight:
Approx. 1150-1200 kg (2535-2646 lbs)
Wheelbase:
Approx. 2570 mm (101.2 in)
Wheel Bolt Pattern:
5x120 mm
Typical Tire Size:
185/70 HR14 or 195/60 HR14
NHTSA Ratings:
Not consistently available for this era; early 1980s vehicles often lacked standardized testing.
Braking System:
Front ventilated discs, rear drums (standard). Optional ABS (Anti-lock Braking System) on some models.
Restraints:
3-point seatbelts, optional driver's airbag (late E30s).
Body Structure:
Reinforced safety cell, crumple zones front and rear.
Oil Change Interval:
Every 5,000-7,500 miles (8,000-12,000 km) or 6-12 months, depending on driving conditions and oil type used. Consult manual for precise recommendations.
Spark Plug Replacement:
Approximately every 20,000-30,000 miles (32,000-48,000 km).
Timing Belt Replacement:
The M40 engine uses a timing belt. Replacement recommended every 40,000-60,000 miles (64,000-96,000 km) or 4-5 years due to potential stretching/failure.
Coolant Capacity:
Approximately 7.5 Liters (7.9 Quarts)
Engine Oil Capacity:
Approximately 4.25 Liters (4.5 Quarts) with filter change.
Common Faults:
Cracked dashboard, sagging headliner, coolant leaks (especially from heater core and hoses), fuel injector issues, idle control valve problems, timing belt failure (if not replaced on schedule), rust in common areas (wheel wells, rocker panels, strut towers).
Diagnostic Pointers:
Rough idle, poor starting, misfires can indicate fuel system or ignition issues. Hard steering can point to power steering problems. Check for coolant smell inside the cabin for heater core leaks.
Brand Reputation:
BMW, known for 'The Ultimate Driving Machine,' has a long history of producing sporty, well-engineered vehicles.
E30 Introduction:
The E30 generation was introduced in 1982, replacing the E21. It was a significant evolution in design and engineering.
E30 Facelift:
The 1989 model year represents the later E30 series, which received minor updates including revised bumpers and interior trim.
Production Years:
1982-1994 (E30 platform globally), 1984-1991 (318i specific to North America).
Manufacturing:
Primarily Germany (Munich, Dingolfing), with some assembly in other global locations.
