Segment:
Compact Executive Sedan/Coupe
Target Audience:
Enthusiasts and owners seeking in-depth knowledge for DIY maintenance and repair of their E36 325i.
Competitors:
Mercedes-Benz C-Class (W202), Audi A4 (B5), Lexus ES300.
Driving Dynamics:
Renowned for its balanced chassis, RWD dynamics, and engaging driving experience.
Build Quality:
Typical BMW build quality with durable materials and precise engineering.
Powertrain:
Smooth and powerful inline-six engine known for its responsiveness.
Engine:
Detailed diagnostics, repair, and overhaul of the M50B25TU engine, including valvetrain, lubrication, cooling, fuel, ignition, and emissions systems.
Transmission:
Service and repair procedures for both the Getrag 260 5-speed manual and the ZF 4HP22 4-speed automatic transmissions, including fluid changes, seal replacement, and component overhaul.
Drivetrain:
Includes information on the clutch, driveshaft, differential, and rear axle assemblies.
Suspension:
Front and rear suspension components, including struts, shocks, control arms, bushings, and alignment specifications.
Steering:
Power steering system diagnostics, repair, and fluid service, including steering rack and pump.
Brakes:
Front and rear brake system service, including pad and rotor replacement, caliper overhaul, ABS system diagnostics, and brake fluid bleeding procedures.
Electrical:
Comprehensive electrical schematics, wiring diagrams, component testing, and troubleshooting for all vehicle systems including ECU, sensors, lighting, and body electronics.
Bodywork:
Exterior and interior trim removal, body panel alignment, door and window mechanisms, and convertible top service (if applicable).
HVAC:
Air conditioning system service, heater core replacement, climate control module diagnostics, and refrigerant handling.
Maintenance:
Routine maintenance tasks such as oil changes, filter replacements, spark plug changes, and fluid level checks.
Diagnostics:
Step-by-step diagnostic procedures for identifying and resolving common and complex faults across all vehicle systems.
Repair:
Detailed instructions for component removal, replacement, adjustment, and reassembly.
Troubleshooting:
Troubleshooting trees and symptom-based diagnosis for electrical, mechanical, and drivability issues.
Special Tools:
Identification and usage of specialized tools required for specific repair procedures.
Depth:
Comprehensive, covering everything from basic fluid changes to full engine and transmission rebuilds, including electrical system diagnostics and repair.
Engine Type:
Inline 6-cylinder, DOHC, 24 valves (M50B25TU)
Displacement:
2.5 Liters (2494 cc)
Bore X Stroke:
84.0 mm x 75.0 mm
Compression Ratio:
10.0:1
Horsepower:
189 hp @ 5900 rpm
Torque:
245 Nm (181 lb-ft) @ 4200 rpm
Injection:
Bosch Motronic M5.2 Engine Management System with multi-point fuel injection (MPI).
Fuel Type:
Premium Unleaded Gasoline (91 Octane or higher recommended)
System Type:
Pressurized, liquid-cooled with electric cooling fan.
Oil Capacity W Filter:
6.5 Liters (6.9 US Quarts)
Type:
Getrag 260 5-speed Manual Transmission
Type:
ZF 4HP22 4-speed Automatic Transmission
Manual Gear Ratios:
1st: 4.23, 2nd: 2.52, 3rd: 1.68, 4th: 1.21, 5th: 1.00, Reverse: 3.85
Automatic Features:
Electronic control, lockout torque converter, sport mode selection (on some models).
Manual Fluid:
BMW ATF-S (or equivalent MTF LT-2/LT-3 specification) - Capacity approx. 1.3 Liters
Automatic Fluid:
ZF TE-ML 04D, ZF TE-ML 09, ZF TE-ML 14A (typically Dexron III/Mercon) - Capacity approx. 7.0 Liters (total system)
NHTSA Front Impact:
4/5 stars (driver), 4/5 stars (passenger) - Based on available data for the E36 generation.
ABS:
Standard Anti-lock Braking System (ABS).
Traction Control:
Optional ASC+T (Automatic Stability Control and Traction) on some models.
Airbags:
Driver and front passenger airbags.
Seatbelts:
3-point inertia-reel seatbelts with pre-tensioners for front occupants.
Head Unit:
Factory BMW Bavaria cassette or CD player with AM/FM radio. Optional Harman Kardon sound system.
Display:
On-Board Computer (OBC) with basic trip information, fuel economy, and system diagnostics. Often features a multi-line LCD display prone to pixel failure.
Cruise Control:
Standard cruise control system.
Phone Integration:
Limited to optional dealer-installed car phone kits; no modern Bluetooth or USB integration.
Oil Change:
Typically every 7,500-10,000 miles (12,000-16,000 km) or as indicated by the vehicle's Condition Based Service (CBS) system, though manual recommends annual or 7,500 miles.
Spark Plugs:
Refer to manual, generally around 60,000 miles (96,000 km) for standard copper plugs or 100,000 miles for platinum/iridium plugs.
Coolant Flush:
Every 2-3 years or 30,000-45,000 miles (48,000-72,000 km).
Transmission Fluid Change:
Manual: Inspect, replace as needed based on condition. Automatic: BMW often recommended 'lifetime' fluid, but most experts advise replacement every 60,000-100,000 miles.
Engine Oil Spec:
SAE 5W-30 or 5W-40 Synthetic Oil meeting BMW Longlife-98 (LL-98) or API SJ/CF and ACEA A3/B3 specifications.
Coolant Spec:
BMW Blue Antifreeze/Coolant (G48 type) mixed 50/50 with distilled water.
Brake Fluid Spec:
DOT 4 Synthetic Brake Fluid.
Cooling System:
Water pump failure (plastic impeller degradation), radiator leaks, thermostat housing leaks, expansion tank cracks.
Suspension:
Control arm bushings (vibrations, steering looseness), shock absorber wear, rear subframe mounts (cracking).
Electrical:
VANOS (Variable Valve Timing) solenoid issues, OVP relay failure, ABS sensor failures, headlight leveling motor failure.
Engine:
Oil pan gasket leaks, valve cover gasket leaks, VANOS rattle on startup.
Interior:
Headliner sag, pixelated OBC (On-Board Computer) display, worn driver's seat bolster.
Bmw Legacy:
BMW has a long-standing reputation for producing driver-focused, sporty vehicles with excellent engineering and performance.
E36 Generation:
The E36 generation (1990-1999) succeeded the E30 and introduced significant advancements in chassis design, suspension, and technology, setting a new benchmark for the 3 Series.
Production Period:
1991-1995 (for the 325i model within the E36 platform).