Competitors 1986:
Mercedes-Benz W124, Audi 100, Jaguar XJ6.
Key Strengths:
Balanced handling, robust engineering, driver-focused cockpit, understated luxury.
Design Philosophy:
The E28 5 Series emphasized driving dynamics and build quality, embodying BMW's 'Ultimate Driving Machine' ethos.
Engine:
Complete engine diagnostics, overhaul, fuel injection, ignition, cooling, lubrication.
Transmission:
Automatic and Manual transmission overhaul, diagnostics, and fluid service.
Drivetrain:
Driveshafts, differentials, axles, and drive components.
Brakes:
Hydraulic brake system, ABS (if equipped), disc/drum service, fluid replacement, troubleshooting.
Suspension:
Front and rear suspension components, shock absorbers, springs, bushings, alignment.
Steering:
Power steering system, steering rack/box, linkages, troubleshooting.
Electrical:
Full electrical system schematics, battery, charging system, starting system, lighting, accessories, fuses, relays, ECU diagnosis.
Bodywork:
Body panel repair, doors, windows, locks, exterior trim, interior trim, climate control system.
HVAC:
Heating, ventilation, and air conditioning system diagnosis and repair.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, spark plug replacement, brake fluid flush, coolant flush.
Diagnostics:
Step-by-step troubleshooting guides for common and uncommon issues across all systems.
Repair:
Detailed instructions for component removal, installation, and repair for all major vehicle systems.
Overhaul:
Complete engine and transmission overhaul procedures with specifications and torque values.
Specifications:
Torque specifications, clearances, fluid capacities, and electrical values.
Depth:
Comprehensive, factory-level detail suitable for professional technicians and advanced DIYers.
Engine Code Typical:
M30B32 (for 533i), M20B25 (for 525i)
Engine Type:
Inline 6-Cylinder, SOHC
Displacement:
2.5 Liters (2494 cc)
Horsepower Hp:
Approx. 169 hp @ 5800 rpm (M20B25)
Torque Lb Ft:
Approx. 204 lb-ft @ 4000 rpm (M20B25)
Fuel Delivery:
Bosch L-Jetronic or Motronic fuel injection
Fuel Type:
Unleaded Gasoline (Premium recommended)
Type:
4-Speed Manual (Getrag 260)
Type:
3-Speed Automatic (ZF 3HP22)
Manual Gear Ratios:
Specific ratios detailed in manual, typically around 3.71:1 for 1st gear.
Automatic Features:
Sport/Economy modes may be available depending on specific model year/options.
NHTSA Ratings:
No specific NHTSA ratings available for this era; safety was more focused on passive design.
ABS:
Anti-lock Braking System (ABS) available as an option on many models.
Seatbelts:
Three-point inertia-reel seatbelts (front and rear).
Chassis Design:
Rigid unibody construction with crumple zones.
Oil Change:
Typically every 5,000-7,500 miles or 6-12 months (consult manual for exact interval based on driving conditions).
Coolant Flush:
Every 2 years or 30,000 miles.
Spark Plugs:
Replace every 30,000 miles (depending on plug type, e.g., copper vs. platinum).
Engine Oil Type:
API SF or SG, SAE 15W-40 or 10W-40 (consult manual for specific viscosity and quality based on climate).
Coolant Type:
Ethylene glycol-based antifreeze (typically 50/50 mix with distilled water).
Brake Fluid Type:
DOT 3 or DOT 4 (ensure compatibility).
E28 Common Problems:
Cooling system leaks (hoses, radiator, water pump), fuel distributor diaphragm leaks, idle control valve issues, door seal deterioration, sunroof drain clogs, subframe bushing wear, front suspension component wear.
Fuel System Maintenance:
Regular fuel filter replacement is crucial for the K-Jetronic/Motronic system.
Brand Focus:
BMW has a long-standing reputation for producing driver-focused, performance-oriented vehicles with exceptional build quality.
E28 Development:
The E28 was an evolution of the E12, featuring improved aerodynamics, updated styling, and advanced technology for its time. It marked BMW's increasing focus on sophisticated engine management and safety features.
Manufacturing Locations:
Germany (primarily Dingolfing)
