Segment:
Full-size Luxury Sedan
Competitors:
Mercedes-Benz S-Class (W126/W140), Lexus LS 400, Jaguar XJ, Cadillac DeVille
Engine:
Flagship V12 engine, representing BMW's engineering prowess
Luxury:
Exceptional comfort, refined interior, advanced features for its era
Technology:
Introduction of advanced electronic systems and driver aids
Differentiation:
Sportier driving dynamics compared to some competitors, focus on driver engagement
Engine:
M70 V12 engine, including lubrication, cooling, fuel, ignition, emission controls, and engine management (DME)
Transmission:
Automatic Transmission (e.g., 4HP24)
Drivetrain:
Rear-wheel drive, driveshafts, differentials, axle shafts
Suspension:
Front and rear suspension components, shock absorbers, springs, bushings, self-leveling rear suspension (if applicable)
Steering:
Power steering system, steering column, steering rack/box
Brakes:
Hydraulic system, ABS (Anti-lock Braking System), brake pads, rotors, calipers, brake lines
Electrical:
Wiring diagrams, battery, charging system, starter, lighting, fuses, relays, ignition switch, diagnostic connectors (OBD)
Bodywork:
Body panels, doors, windows, locks, sunroof, exterior trim, interior trim, sound deadening
HVAC:
Heating, Ventilation, and Air Conditioning (HVAC) system, climate control
Comfort Features:
Power seats, power windows, mirrors, central locking, cruise control
Maintenance:
Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement
Repair:
Engine component overhaul, transmission service, suspension component replacement, brake system repair, electrical diagnostics and repair
Troubleshooting:
Diagnostic flowcharts, common problem identification and solutions, fault code interpretation
Diagnostics:
DME (Digital Motor Electronics) diagnostics, ABS diagnostics, on-board diagnostics (OBD) functionality
Specifications:
Torque values, tolerances, clearances, diagnostic parameters
Wiring Diagrams:
Comprehensive electrical schematics for all vehicle systems
Depth:
Comprehensive, covering routine maintenance to full engine and transmission rebuilds
Target Audience:
Professional technicians and advanced DIY enthusiasts
Length 750I:
Approximately 199.5 inches (5068 mm)
Length 750Il:
Approximately 204.5 inches (5195 mm)
Wheelbase 750I:
Approximately 117.4 inches (2982 mm)
Wheelbase 750Il:
Approximately 122.4 inches (3109 mm)
Curb Weight 750I:
Approximately 4100 - 4300 lbs (1860 - 1950 kg)
Curb Weight 750Il:
Approximately 4300 - 4500 lbs (1950 - 2040 kg)
Radio System:
Premium ETR AM/FM stereo with cassette player, often with external amplifier
Navigation:
Optional GPS navigation system available on later models
Cruise Control:
Standard electronic cruise control
Parking Assist:
Optional rear parking sensors available on some models
Onboard Computer:
On-Board Computer (OBC) displaying fuel consumption, range, speed, and diagnostics
OBD Standard:
OBD-I system with BMW's specific diagnostic protocols
Oil Change Interval:
Typically every 7,500 - 10,000 miles or annually (refer to manual for precise intervals based on driving conditions)
Coolant Flush Interval:
Every 2-3 years or as specified in the manual
Spark Plug Replacement:
Around 60,000 miles (specific type and gap are critical)
Engine Oil Type:
SAE 5W-30 or 5W-40 synthetic (refer to manual for exact BMW specification like BMW High Performance SAE 5W-40)
Engine Oil Capacity:
Approximately 7.5 Liters (8.0 US Quarts)
Coolant Type:
BMW Blue Antifreeze/Coolant (G48 formulation or equivalent)
Brake Fluid Type:
DOT 3 or DOT 4 (refer to manual for exact specification)
M70 Engine Specific:
Dual intake plenums, ignition coil failures, idle control valve issues, VANOS (variable camshaft timing) operation, thermostat housing leaks, fuel distributor issues.
Electrical System:
Corrosion in wiring harnesses, failing ABS sensors, OBC (On-Board Computer) malfunctions, door lock actuators.
Suspension:
Worn control arm bushings, leaking self-leveling suspension components (if equipped), front strut mount wear.
HVAC:
HVAC blower motor resistor failure, climate control unit malfunctions, evaporator leaks.
