🏷️ Basic Information

Make:

BMW

Model:

325i

Year:

1989

Chassis Code:

E30

Engine Code:

M20B25

👋 Introduction

Positioning:

The BMW 325i (E30) was positioned as a sporty, premium compact executive car, celebrated for its engaging driving dynamics and quality engineering.

Competitors:

Competed with vehicles like the Mercedes-Benz 190E, Audi 80/90, and Alfa Romeo 75. Known for superior handling and driver involvement compared to many rivals.

Driving Dynamics:

Renowned for its balanced chassis, rear-wheel drive, and communicative steering, offering an exceptional driving experience.

Engine Performance:

The M20B25 engine provided a smooth power delivery and a characteristic inline-six sound, offering a good blend of performance and refinement.

Build Quality:

Exemplified BMW's reputation for solid construction and durable components, contributing to its longevity.

📋 Manual Details

Coverage Scope:

All models, engines, trim levels, and transmission types for the 1989 BMW 325i

Estimated Page Count:

900+

Type:

Workshop Repair Service Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine:

M20 inline-six (2.5L), including lubrication, cooling, fuel injection (Bosch Motronic), ignition, exhaust, and emission controls.

Transmission:

Getrag 260 5-speed manual and ZF 4HP22 4-speed automatic transmissions, including operation, maintenance, and repair.

Drivetrain:

Clutch system, driveshaft, differential, and rear axle assembly.

Suspension:

Front McPherson struts, rear semi-trailing arm independent suspension, shocks, springs, bushings, and alignment specifications.

Brakes:

Front vented discs, rear solid discs, hydraulic system, ABS (Antilock Braking System) operation and components, parking brake.

Steering:

Power-assisted recirculating ball steering system, steering rack, pump, and associated components.

Electrical System:

12V system, battery, alternator, starter, fuse box, wiring diagrams, lighting, instrument cluster, and power accessories.

Fuel System:

Fuel tank, fuel pump, fuel lines, fuel injectors, fuel pressure regulator, and diagnosis of fuel delivery issues.

Cooling System:

Radiator, fan (mechanical or electric), water pump, thermostat, hoses, and coolant specifications.

Exhaust System:

Exhaust manifolds, catalytic converter, mufflers, pipes, and hangers.

Body And Chassis:

Body panels, doors, hood, trunk, interior trim, and chassis structure.

Maintenance:

Scheduled maintenance, oil changes, filter replacements, spark plug replacement, belt inspection and replacement, fluid checks and changes.

Troubleshooting:

Diagnostic procedures for common issues, fault code interpretation (if applicable for the era), symptom-based troubleshooting.

Repair:

Step-by-step repair instructions for major components: engine rebuilds, transmission overhauls, brake system repairs, suspension component replacement, electrical system repairs.

Diagnostics:

Engine performance diagnostics, electrical system testing, fuel system pressure testing, emissions system testing.

Removal Installation:

Detailed procedures for removing and installing major assemblies and components.

Specifications Data:

Torque specifications, clearances, alignments, fluid capacities, electrical specifications.

Depth:

Comprehensive, from basic routine maintenance to complete engine and transmission overhauls, covering all aspects required for professional repair and servicing.

📊 Manual Specifications

Format:

PDF

Searchable:

Yes, typically text-searchable if professionally converted.

Quality:

High resolution, suitable for printing individual pages or sections.

Binding:

N/A (Digital Download)

Paper:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Type:

Inline 6-cylinder, SOHC

Displacement:

2494 cc (2.5 Liters)

Bore X Stroke:

84.0 mm x 75.0 mm

Compression Ratio:

8.5:1

Horsepower:

168 hp (125 kW) @ 5800 rpm

Torque:

164 lb-ft (222 Nm) @ 4300 rpm

Fuel Delivery:

Bosch Motronic electronic fuel injection (EFI)

Fuel Type:

Unleaded Premium Gasoline (91+ Octane)

Ignition Type:

Distributorless Ignition System (DIS) with electronic ignition control.

🔧 Transmission

Type:

Getrag 260 5-speed manual transmission

Type:

ZF 4HP22 4-speed automatic transmission

Manual Gear Ratios:

1st: 3.72, 2nd: 2.11, 3rd: 1.31, 4th: 1.00, 5th: 0.81, Reverse: 3.40

Automatic Gear Ratios:

1st: 2.48, 2nd: 1.48, 3rd: 1.00, 4th: 0.72, Reverse: 2.09

Clutch Type:

Single dry plate, hydraulic actuation (manual transmission)

Manual Transmission Fluid:

BMW ATF Dexron III (or equivalent)

Automatic Transmission Fluid:

BMW ATF Dexron III (or equivalent)

📐 Dimensions

Wheelbase:

2624 mm (103.3 inches)

Length:

4340 mm (170.9 inches)

Width:

1675 mm (66.0 inches)

Height:

1380 mm (54.3 inches)

Front Track:

1406 mm (55.4 inches)

Rear Track:

1424 mm (56.1 inches)

Curb Weight Manual:

Approx. 1370 kg (3020 lbs)

Curb Weight Automatic:

Approx. 1395 kg (3075 lbs)

Gvw:

Approx. 1820 kg (4012 lbs)

Towing Capacity:

Not officially rated for significant towing

🛡️ Safety Features

NHTSA Frontal Impact:

N/A (Crash testing standards evolved significantly)

ABS:

Standard Bosch ABS II (Antilock Braking System) on all wheels.

Traction Control:

Optional ASC+T (Automatic Stability Control + Traction) on some later models, but not standard on the 1989 325i.

Airbags:

Driver's side airbag optional, passenger airbag not available.

Seatbelts:

3-point inertia-reel seatbelts front, 2-point lap belts rear.

Rollover Protection:

Reinforced A-pillars and body structure.

💡 Technology Features

Head Unit:

Original BMW Bavaria C or similar cassette radio with optional CD changer input.

Speakers:

Typically 4 or 6 speakers, depending on options.

Cruise Control:

Optional

Trip Computer:

Optional, basic functions.

Bluetooth:

N/A (Pre-dates widespread Bluetooth integration).

Aux Input:

N/A (Aftermarket head unit modifications common for aux/USB).

🔧 Maintenance

Oil Change Interval:

Every 7,500-10,000 miles or annually, whichever comes first. Consult manual for specific conditions.

Spark Plug Replacement:

Recommended every 30,000 miles (check manual for exact type and gap).

Timing Belt Replacement:

M20 engines use a timing belt. Recommended replacement every 50,000-60,000 miles or 5 years. Belt failure is catastrophic.

Engine Oil Type:

BMW High Performance Synthetic 5W-30 or 5W-40 (API SJ/SL or ACEA A3/B3) – consult manual for precise viscosity and approvals.

Engine Oil Capacity:

5.7 Liters (6.0 US Quarts) with filter change.

Coolant Type:

BMW Blue Antifreeze/Coolant (G48) or equivalent ethylene glycol-based coolant with corrosion inhibitors.

Coolant Capacity:

Approx. 8.0 Liters (8.5 US Quarts)

Brake Fluid Type:

DOT 4 brake fluid

Common Problems:

Cooling system leaks (radiator, hoses, water pump), fuel distributor issues, AFM sensor problems, electrical connector corrosion, differential mount failure, strut mount wear, heater control valve leaks.

Rust Prone Areas:

Wheel arches, rocker panels, jacking points, sunroof drain channels, trunk floor.

📚 Vehicle History

Heritage:

BMW's reputation for building driver-focused, performance-oriented vehicles with a focus on engineering excellence and sporting heritage.

E30 Generation:

The E30 generation (1982-1994) is a highly revered chassis, marking a significant step for BMW's 3 Series, moving from the squared-off E21 to a more aerodynamic and refined design. The 325i was a cornerstone of this generation.

Production Years:

E30 325i production: 1986-1992 (globally, specific model year 1989 is covered).

Manufacturing Locations:

Primarily Germany, with some assembly in South Africa and other locations.

Notable Variants:

Includes the M3 (E30), convertible, touring (wagon), and various performance packages.

🏆 Awards & Recognition

Car And Driver 10Best:

The E30 3 Series, including models like the 325, was a frequent recipient of Car and Driver's '10Best' list in the late 1980s, lauded for its driving prowess.

Iconic Status:

Widely considered a modern classic and one of BMW's most iconic models, often praised for its timeless design and pure driving engagement.

Historical Significance:

Instrumental in cementing BMW's reputation for performance sedans and coupes in North America.