🏷️ Basic Information

Make:

BMW

Model:

3 Series

Chassis Code:

E21

Covered Models:

315, 318, 318i, 320, 320i, 323i

Engine Codes Covered:

M10 (1.6L, 1.8L, 2.0L, 2.3L)

👋 Introduction

Target Audience:

BMW E21 owners interested in DIY maintenance and repair, independent workshops.

Value Proposition:

Provides extensive, detailed repair information for a classic BMW model, enabling cost-effective maintenance and empowering enthusiasts.

Diy Enablement:

Designed to facilitate home repairs with clear instructions and diagrams.

📋 Manual Details

Manual Type:

Service and Repair Manual

Language:

English

File Format:

PDF

Compatible Operating Systems:

All Versions of Windows & Mac

Required Software:

Adobe PDF Reader

📖 Manual Coverage

General Maintenance:

Yes

Troubleshooting:

Yes

Engine Service Repair:

Yes

Transmission Service Repair:

Yes

Brake System:

Yes

Electrical System:

Yes

Suspension:

Yes

Wiring Diagrams:

Yes

Periodic Lubrication:

Yes

Steering:

Yes

Cooling System:

Yes

Fuel Injection Fuel System:

Yes

Emission System:

Yes

Heater Air Conditioning:

Yes

Engine Control System:

Yes

Chassis Body:

Yes

Restraint System:

Yes

Interior:

Yes

Differential Drive Axle:

Yes

Workshop Procedures:

Detailed instructions and step-by-step diagrams for all workshop procedures

Depth Of Coverage:

Comprehensive for DIY and professional workshop use

📊 Manual Specifications

File Type:

Digital Download (PDF)

Resolution And Clarity:

High-resolution, suitable for printing specific sections or the entire manual.

Binding Method:

N/A (Digital Download)

Paper Quality:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Family:

BMW M10

Engine Variants Covered:

1.6L, 1.8L, 2.0L, 2.3L (carbureted and fuel injected)

Fuel Delivery Methods:

Carburetor (e.g., Solex, Zenith) and Bosch L-Jetronic / K-Jetronic fuel injection.

🔧 Transmission

Standard Transmission:

4-speed manual (e.g., Getrag 245)

Optional Transmission:

3-speed automatic (e.g., ZF 3HP18, 3HP22)

Transmission Coverage:

Service, repair, and maintenance procedures for both manual and automatic transmissions.

📐 Dimensions

Body Styles:

2-door sedan, 4-door sedan

Wheelbase:

Approximately 2564 mm (100.9 inches)

Curb Weight:

Varies by model, typically 1100-1300 kg (2425-2866 lbs)

🛡️ Safety Features

Historical Safety Context:

Reflects safety standards of its era; manual likely covers braking system diagnostics, suspension safety checks, and potentially seatbelt maintenance.

Active Safety Coverage:

Brake system (discs front, drums/discs rear depending on model), steering system.

Passive Safety Coverage:

Restraint system (seatbelts), interior component checks.

💡 Technology Features

Infotainment Features Era:

Basic analog radio, cassette player (optional). Manual would cover installation/removal and basic electrical diagnostics.

Driver Assistance Systems:

None in the modern sense. Manual covers fundamental mechanical and electrical systems.

🔧 Maintenance

General Interval Guidance:

Manual would detail recommended intervals for oil changes, filter replacements, spark plugs, and fluid checks, typically based on mileage or time.

Engine Oil Type:

Likely recommends SAE 10W-40 or 20W-50, depending on climate and engine condition. Specific BMW approval numbers would be detailed.

Coolant Type:

Ethylene glycol based coolant, likely BMW blue or green coolant specification.

Brake Fluid Type:

DOT 3 or DOT 4.

Transmission Fluid Type Manual:

GL-4 gear oil, viscosity typically 75W-90 or 80W-90.

Transmission Fluid Type Automatic:

Dexron III or equivalent ATF (Automatic Transmission Fluid).

Common E21 Issues:

Corrosion (especially wheel arches, sills), cooling system leaks (hoses, radiator), fuel system issues (carburetor or injection), aging electrical components, worn suspension bushings.

Manual Diagnostic Utility:

The manual's troubleshooting section is invaluable for diagnosing these common problems.

📚 Vehicle History

Bmw Philosophy:

Introduction of the E21 marked BMW's move towards more compact, sporty sedans that balanced everyday usability with driving dynamics.

E21 Generation:

First generation of the BMW 3 Series, produced from 1975 to 1983. Replaced the highly successful BMW 02 series.

Production Years:

1975-1983

Manufacturing Locations:

Mainly Germany (Munich, Dingolfing), also South Africa and Thailand.

🏆 Awards & Recognition

Model Reputation:

The E21 is widely recognized for its driving dynamics and established the 3 Series as a benchmark in its class.

Enthusiast Appreciation:

Highly regarded by BMW enthusiasts for its classic styling and engaging driving experience.