Market Position:
The BMW 518i (E34) represented BMW's entry-level executive sedan for the era, balancing performance, luxury, and efficiency. It competed with vehicles like the Mercedes-Benz 190E, Audi 100, and Volvo 240.
Competitive Analysis:
While the 518i was less powerful than its 520i, 525i, and 535i siblings, it offered a more accessible entry point into BMW ownership, appealing to buyers prioritizing build quality and driving dynamics over outright power.
Key Features:
Rear-wheel drive, well-balanced chassis, refined interior, robust M20 engine (in early E34 variants), emphasis on driver engagement.
Manual Value Proposition:
Offers comprehensive coverage for DIY enthusiasts and professional mechanics seeking to maintain or repair the E34 518i, emphasizing completeness and accuracy.
Engine Systems:
Engine mechanical (M20B18), fuel injection (Bosch Motronic), ignition, cooling, exhaust, lubrication
Transmission Systems:
Manual and Automatic transmission overhaul, clutch, driveshafts, differential
Chassis Systems:
Suspension (front struts, rear multi-link), steering (power assisted), brakes (ABS, ventilated discs front, solid rear)
Electrical Systems:
Wiring diagrams, starter, alternator, lighting, instrument cluster, power windows, central locking
Body And Interior:
Body panel removal and repair, interior trim, seats, HVAC system
Maintenance Procedures:
Oil changes, filter replacements, spark plug service, coolant flushes, brake fluid changes, belt inspections
Diagnostic Procedures:
Troubleshooting guides for common symptoms, fault code interpretation (where applicable), basic electrical diagnostics
Repair Procedures:
Engine overhaul, transmission rebuild, suspension component replacement, brake caliper overhaul, starter/alternator replacement
Special Tools:
Identification and usage of specific BMW-required tools for certain procedures
Depth Of Coverage:
Comprehensive: Covers everything from routine maintenance to major component overhauls and diagnostics.
Engine Type:
Inline 4-cylinder, SOHC
Displacement:
1797 cc (1.8 liters)
Horsepower:
Approx. 115 PS (113 bhp; 85 kW) at 5500 rpm (European spec)
Torque:
Approx. 165 Nm (122 lb-ft) at 4000 rpm (European spec)
Fuel Delivery:
Bosch LE-Jetronic or Motronic fuel injection
Fuel Type:
Unleaded gasoline
Ignition System:
Electronic ignition, distributor-based
Length:
Approx. 4730 mm (186.2 in)
Width:
Approx. 1751 mm (68.9 in)
Height:
Approx. 1410 mm (55.5 in)
Wheelbase:
Approx. 2761 mm (108.7 in)
Curb Weight:
Approx. 1380-1450 kg (3042-3197 lbs), depending on transmission and equipment
Safety Ratings Era:
While specific Euro NCAP ratings for this era are not standard, BMWs of this period were known for robust construction and good passive safety.
Active Safety Features:
Optional ABS (Anti-lock Braking System)
Passive Safety Features:
Impact-absorbing body structure, safety steering column, front and rear crumple zones, seat belts
Infotainment Systems:
Basic analog or digital radio/cassette player, optional CD changer. Limited by era.
Driver Assistance Features:
ABS (Anti-lock Braking System) was optional. No electronic stability control or advanced driver-assistance systems (ADAS) typical of modern vehicles.
Connectivity Features:
No modern connectivity features like Bluetooth or USB. Antennas for radio reception.
Oil Change Interval:
Typically every 10,000-15,000 km (6,000-9,000 miles) or annually, depending on driving conditions and oil used. Refer to manual for specific recommendations.
Spark Plug Replacement:
Typically every 20,000-30,000 km (12,000-18,000 miles) for standard plugs, or longer for platinum/iridium.
Coolant Replacement:
Every 2-3 years or as per BMW recommendations.
Engine Oil Type:
API SG or higher, viscosity typically 10W-40 or 15W-40, or 5W-40/5W-30 for synthetic. Always consult manual for exact spec.
Coolant Type:
BMW blue coolant (Glysantin G05 equivalent) or equivalent ethylene glycol-based coolant
Brake Fluid Type:
DOT 3 or DOT 4
Transmission Fluid Manual:
Gear oil GL-4, typically SAE 75W-90 or 80W-90
Transmission Fluid Automatic:
Dexron III or equivalent ATF (Automatic Transmission Fluid)
Known Issues:
Valve stem seals, cooling system (water pump, thermostat, hoses), fuel pump, oil pan gasket leaks, front suspension bushings, rear subframe mounting points, seized brake calipers, window regulator failures.
Engine Specific Issues:
M20 engines can suffer from timing belt wear (though it's a chain on some variants, check specifics), oil leaks from the front crank seal, and occasional head gasket issues if overheated.
Brand Heritage:
BMW's reputation for building sporty, luxurious, and technically advanced automobiles.
Model Evolution:
The E34 generation (1987-1996) was a significant evolution from the E28, featuring more aerodynamic styling, improved chassis dynamics, and updated technology. The 518i was positioned as the most accessible model in the E34 lineup.
Production Years:
E34 generation: 1987-1996. Specific 518i models covered by this manual: 1990-1991.
Manufacturing Locations:
Primarily Germany (Dingolfing plant)
