🏷️ Basic Information

Make:

BMW

Model:

325 / 325e

Generation:

E30

Production Years Covered:

1984, 1985, 1986, 1987, 1988, 1989, 1990

Chassis Code:

E30

👋 Introduction

Vehicle Segment:

Compact Executive Sedan/Coupe/Convertible (E30 platform)

Target Audience:

Enthusiasts, DIY mechanics, and professional workshops servicing BMW E30 models.

Key Competitors:

Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Volvo 240 Series.

Bmw Brand Philosophy:

Focus on driving dynamics ('The Ultimate Driving Machine'), build quality, and sophisticated engineering.

E30 Platform Significance:

Considered a benchmark for sports sedan handling and performance in its era, establishing BMW's reputation for driver engagement.

📋 Manual Details

Manual Coverage Scope:

Comprehensive service, repair, and diagnostic information for BMW 325 and 325e E30 models.

Estimated Page Count:

600+

Type:

Service and Repair Workshop Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Engine:

M20B27 inline-6 engine (325e) and M20B25 inline-6 engine (325) including fuel injection, ignition, cooling, lubrication, exhaust, and emissions.

Transmission:

Getrag 260 5-speed manual and ZF 4HP22 4-speed automatic transmissions. Includes shift mechanisms, clutch operation, and torque converter.

Drivetrain:

Rear-wheel drive system, driveshaft, universal joints, CV joints, differential, and axle shafts.

Suspension:

Front MacPherson struts, rear semi-trailing arms, springs, shock absorbers, control arms, sway bars, bushings, and wheel bearings.

Brakes:

Front and rear disc brakes (vented front), brake hydraulics, master cylinder, calipers, brake lines, parking brake system.

Steering:

Rack and pinion steering system, power steering pump, steering rack, steering column, tie rod ends.

Electrical:

Starting and charging systems (alternator, starter), battery, lighting system, horn, wipers, power windows, mirrors, central locking, and fuse/relay box.

Fuel System:

Bosch L-Jetronic (325e) and Motronic (325) fuel injection systems, fuel pump, fuel filter, fuel injectors, fuel pressure regulator, fuel tank.

Cooling System:

Radiator, coolant pump, thermostat, hoses, fan (mechanical/electric), and heater core.

Exhaust System:

Exhaust manifolds, catalytic converter (on later models), mufflers, and exhaust piping.

Climate Control:

HVAC system, blower motor, evaporator, condenser, refrigerant system, and controls.

Body And Interior:

Body panel removal and installation, door mechanisms, hood, trunk, bumpers, interior trim, seats, and dashboard.

Scheduled Maintenance:

Detailed steps for routine maintenance, including oil changes, filter replacements, spark plug replacement, belt inspection and replacement, and fluid checks.

Diagnostic Procedures:

Troubleshooting guides, symptom-based diagnostics, and step-by-step procedures for identifying and resolving common issues.

Repair Procedures:

Comprehensive instructions for component removal, disassembly, repair, reassembly, and installation for all major vehicle systems.

Engine Overhaul:

Detailed procedures for engine rebuilding, including cylinder head removal, piston and connecting rod installation, crankshaft and bearing replacement, and camshaft timing.

Transmission Rebuild:

Instructions for manual and automatic transmission disassembly, inspection, component replacement, and reassembly. Torque specifications for critical fasteners.

Electrical Diagnosis:

Wiring diagrams, component testing procedures, and troubleshooting for electrical faults. Use of multimeters and oscilloscopes discussed.

Fuel Injection Tuning:

Diagnostic procedures for fuel injection systems, including injector testing, fuel pressure checks, and sensor calibration. Idle speed adjustment.

Suspension And Steering Alignment:

Specifications for wheel alignment (camber, caster, toe), adjustment procedures, and replacement of suspension components.

Brake Service:

Brake pad and rotor replacement, caliper service, brake bleeding procedures, and parking brake adjustment.

Body And Trim Repair:

Procedures for body panel alignment, dent repair, glass replacement, and interior trim fitting.

Level Of Detail:

Highly detailed, covering everything from basic maintenance to complex component overhauls and diagnostics. Suitable for professional mechanics and experienced DIY enthusiasts.

Diagnostic Tools Required:

Specifies common diagnostic tools, including multimeters, socket sets, torque wrenches, specialized fuel system testers, and ignition timing tools.

Technical Drawings And Diagrams:

Includes exploded views of components, detailed illustrations of procedures, and comprehensive electrical wiring diagrams for all model variants.

📊 Manual Specifications

File Type:

PDF

Searchability:

Searchable text content for quick access to information.

Printability:

Printable pages for on-the-go reference.

Image Resolution:

High-resolution scans ensuring clarity of diagrams and text.

Binding:

N/A (Digital Product)

Paper Quality:

N/A (Digital Product)

⚙️ Engine Specifications

325E Engine Code:

M20B27

325E Engine Type:

Inline 6-cylinder, SOHC

325E Displacement:

2.7 Liters (2693 cc)

325E Bore X Stroke:

84.0 mm x 81.0 mm

325E Compression Ratio:

8.5:1 (early models), 9.0:1 (later models)

325 Engine Code:

M20B25

325 Engine Type:

Inline 6-cylinder, SOHC

325 Displacement:

2.5 Liters (2494 cc)

325 Bore X Stroke:

84.0 mm x 75.0 mm

325 Compression Ratio:

9.4:1

325E Horsepower:

121 hp @ 4800 rpm (US Spec), 125 hp @ 4700 rpm (Euro Spec)

325E Torque:

170 lb-ft @ 3250 rpm (US Spec), 177 lb-ft @ 3000 rpm (Euro Spec)

325 Horsepower:

168 hp @ 5800 rpm (US Spec), 170 hp @ 5900 rpm (Euro Spec)

325 Torque:

164 lb-ft @ 4500 rpm (US Spec), 167 lb-ft @ 4300 rpm (Euro Spec)

325E Fuel Injection:

Bosch L-Jetronic (early), Bosch Motronic (later models)

325 Fuel Injection:

Bosch Motronic (ML-E)

Recommended Fuel:

Unleaded 87 Octane (US Spec 325e), Unleaded 89 Octane (US Spec 325)

🔧 Transmission

325E Standard Transmission:

Getrag 260 5-speed Manual

325 Standard Transmission:

Getrag 260 5-speed Manual

325E Optional Transmission:

ZF 4HP22 4-speed Automatic

325 Optional Transmission:

ZF 4HP22 4-speed Automatic

Manual Transmission Clutch:

Hydraulically operated single dry plate clutch.

Automatic Transmission Features:

Lock-up torque converter, electronic control unit (later models), sport/economy mode selector.

📐 Dimensions

Wheelbase:

101.2 inches (2570 mm)

Length:

170.5 inches (4330 mm)

Width:

65.4 inches (1660 mm)

Height:

54.7 inches (1390 mm)

Curb Weight Approx:

2800 - 3000 lbs (1270 - 1360 kg)

Gross Vehicle Weight Rating Approx:

3800 lbs (1724 kg)

🛡️ Safety Features

Era Safety Standards:

Reflects safety standards of the mid-to-late 1980s. No modern crash test ratings available.

ABS:

Optional on later models (typically 325i/is/Sport models).

Limited Slip Differential:

Optional on 325i/is/Sport models, providing improved traction.

Seatbelts:

Three-point front seatbelts, lap belts for rear passengers.

Headrests:

Front and rear headrests on most models.

Crumple Zones:

Designed with energy-absorbing crumple zones front and rear.

💡 Technology Features

Radio Options:

Factory AM/FM cassette players with optional premium sound systems. Aftermarket head unit upgrades are common.

On Board Computer:

Optional On-Board Computer (OBC) providing basic trip data, diagnostics, and clock functions. Prone to capacitor failure.

Cruise Control:

Optional on most models.

Check Control:

System to alert the driver to various system faults (e.g., low washer fluid, burned-out bulbs). Part of the standard or optional OBC.

Connectivity Features:

Basic by modern standards; limited to radio and optional OBC. No integrated Bluetooth or USB ports.

🔧 Maintenance

Oil Change Interval:

Every 5,000-7,500 miles (8,000-12,000 km) or annually. Manual specifies based on driving conditions.

Spark Plug Replacement:

Every 15,000-20,000 miles (24,000-32,000 km) depending on plug type (copper vs. platinum).

Timing Belt Replacement:

Every 40,000-50,000 miles (64,000-80,000 km) or 5 years for M20 engines. Crucial to avoid catastrophic engine damage.

Coolant Flush:

Every 2-3 years or 30,000 miles (48,000 km).

Engine Oil Type:

API SG or SH, SAE 15W-40 or 20W-50 (depending on climate). Check manual for specific viscosity recommendations.

Engine Oil Capacity:

Approximately 5.5 quarts (5.2 liters) with filter.

Coolant Type:

Ethylene glycol based coolant, typically a 50/50 mix with distilled water. BMW Blue coolant or equivalent.

Brake Fluid Type:

DOT 3 or DOT 4.

Power Steering Fluid:

ATF Dexron II or III, or specific BMW power steering fluid.

Manual Transmission Fluid:

SAE 75W-90 API GL-4 or GL-5 gear oil.

Automatic Transmission Fluid:

ATF Dexron II or III. Refer to manual for exact type and capacity.

Common Problems:

Cooling system leaks (water pump, hoses, radiator), fuel distributor issues, idle control valve problems, differential seal leaks, rear subframe mounting reinforcement, heater control valve failure, door panel warping, OBC (On-Board Computer) failure.

Suspension Wear:

Worn control arm bushings, shock absorber fatigue, and trailing arm bushings are common due to age and mileage.

Electrical Gremlins:

Corroded ground points, failing relays, and aging wiring harnesses can lead to intermittent electrical issues.

📚 Vehicle History

Bmw Heritage:

BMW AG, a German luxury and performance automotive manufacturer with a long history dating back to 1916, known for its engineering prowess and sporting heritage.

E30 Introduction:

The E30 generation replaced the E21 and was produced from 1982 to 1994. The 325e and 325 models were key variants within this highly successful generation.

325E Introduction:

Introduced in 1983 (for the 1984 model year), the 'e' designation signified 'eta' (η), referencing the efficient, larger-displacement M20 engine designed for torque and fuel economy.

325 Introduction:

The 325 (often referred to as 325i in North America to denote fuel injection, even though 'e' also had FI) replaced the 323i, featuring the more performance-oriented M20B25 engine.

Production Locations:

Primarily Germany (Munich, Dingolfing), with some assembly in other international locations.

Key Variants:

Sedan (4-door), Coupe (2-door), Convertible (2-door), Touring (wagon, not in US market). Also included sportier versions like the 325iS/iC.

🏆 Awards & Recognition

Car And Driver 10Best:

The E30 chassis, particularly the 325i, was a frequent recipient of Car and Driver's 10Best awards during its production run, cementing its status as a benchmark sports sedan.

General Reputation:

Highly regarded for its driving dynamics, build quality, and timeless design. Considered a classic and collectible BMW.