Production Years Covered:
1983-1991
Engine Codes:
M10 (M10B18, M10B20), M20 (M20B25, M20B27), M40 (M40B18), M42 (M42B18), S14 (for M3)
Chassis Codes:
E30 (Coupe/Sedan), E30 Convertible, E30 Touring (station wagon)
Positioning:
The BMW E30 (1983-1991) is a highly sought-after classic sports sedan and coupe, renowned for its driving dynamics, build quality, and iconic design. This manual targets enthusiasts and professional mechanics seeking to maintain and restore these vehicles.
Comparison:
Competes with other manuals for similar vehicles like Mercedes-Benz W201 (190E) and Audi 80/90 (B2/B3). Its strength lies in the E30's widespread popularity and the comprehensive nature of BMW's original workshop literature.
Features:
Dealer-level accuracy, detailed diagrams, step-by-step procedures, extensive coverage of all major systems, troubleshooting guides.
Primary Coverage:
All workshop procedures for BMW 3 Series E30 models
Secondary Coverage:
Dealer-level service and repair information
Estimated Pages:
Extensive (typically 1000+ pages for complete sets)
Type:
Workshop Service and Repair Manual
Format:
Downloadable Digital Format (likely PDF)
Engine:
Complete engine overhaul, diagnostics, fuel injection, ignition, cooling, lubrication, emissions control
Transmission:
Manual and automatic transmission service, repair, overhaul, clutch replacement, driveshaft, differential
Brakes:
Hydraulic system, ABS (if equipped), disc/drum brake service, parking brake
Suspension Steering:
Front/rear suspension components, shock absorbers, springs, control arms, power steering system, steering rack
Electrical:
Wiring diagrams, starter, alternator, battery, lighting, instruments, body electronics, ECU diagnostics
Bodywork:
Body panel removal/installation, chassis adjustments, interior trim, glass replacement, rust repair considerations
HVAC:
Heating, ventilation, and air conditioning system service and repair
Maintenance:
Scheduled maintenance, oil changes, filter replacements, tune-ups, fluid checks
Troubleshooting:
Diagnostic procedures for common problems, fault codes, symptom analysis
Repair:
Step-by-step instructions for component replacement, adjustments, and major repairs
Overhaul:
Detailed instructions for complete engine and transmission rebuilds
Diagnostics:
Electrical system diagnostics, fuel system testing, emissions control system diagnosis
Depth:
Comprehensive; covers everything from basic fluid changes to complete engine and transmission rebuilds, including specialized M3 components and ABS systems.
Engine Variants:
M10 (1.8L, 2.0L I4), M20 (2.5L, 2.7L I6), M40 (1.8L I4), M42 (1.8L I4, twin-cam), S14 (2.3L, 2.5L I4, M3)
Horsepower Range:
Approximately 105 hp (318i) to 238 hp (E30 M3 Evolution).
Torque Range:
Approximately 110 lb-ft (318i) to 240 lb-ft (E30 M3 Evolution).
Fuel Delivery:
Bosch L-Jetronic, LE-Jetronic, Motronic fuel injection systems (depending on engine and year).
Fuel Type:
Unleaded gasoline
Compression Ratio:
Varies by engine, e.g., 8.8:1 (M20B25), 10.0:1 (M42B18)
Standard Transmission:
4-speed manual (early models), 5-speed manual (most models)
Optional Transmission:
3-speed automatic, 4-speed automatic
Clutch:
Hydraulically operated single dry plate clutch
Rear Axle:
Independent rear suspension with limited-slip differential (optional on some models, standard on M3)
Wheelbase:
Approximately 2570 mm (101.2 in) for sedan/coupe
Length:
Approximately 4340 mm (170.9 in) for sedan/coupe
Width:
Approximately 1678 mm (66.1 in) for sedan/coupe
Height:
Approximately 1380 mm (54.3 in) for sedan/coupe
Curb Weight Range:
Approximately 1100-1400 kg (2425-3086 lbs), depending on model and equipment.
Gross Vehicle Weight:
Varies by specific model
Towing Capacity:
Not officially specified for most E30 models, generally not recommended.
Crash Test Performance:
Early 1980s standards; later models benefited from improved safety structures. Specific official ratings from agencies like NHTSA/Euro NCAP for this era are limited compared to modern vehicles.
ABS:
Anti-lock Braking System (ABS) available on higher trims and later models.
Traction Control:
Not commonly available on E30 models, except possibly very late M3 variants (ASC).
Airbags:
Driver airbag became standard on most models in the later years of production (1987-1991).
Seatbelts:
3-point front seatbelts, rear lap/shoulder belts (depending on market and body style).
Body Structure:
Integrated safety cage, crumple zones
Radio Options:
Factory options included AM/FM radios with cassette players, often with premium sound system upgrades. Aftermarket head units are common.
Speaker System:
Standard 4-speaker or optional 6-speaker/premium sound systems available.
Cruise Control:
Available as an option on most models.
Trip Computer:
Rarely equipped on E30 models, some later models might have had basic onboard computers.
Bluetooth:
Not available on original E30 models. Aftermarket solutions required.
Usb:
Not available on original E30 models. Aftermarket solutions required.
Oil Change Interval:
Typically every 7,500-10,000 miles (12,000-16,000 km) or annually, whichever comes first. Consult manual for specific engine.
Spark Plug Replacement:
Varies by plug type (e.g., copper, platinum), typically 30,000-60,000 miles.
Timing Belt Chain:
M10, M20, M40, S14 engines use timing belts; M42 uses a timing chain. Belt replacement intervals are critical (e.g., M20 typically 60,000 miles).
Engine Oil:
API SH/SJ or higher, SAE 5W-30, 5W-40, or 10W-40 depending on climate. Check manual for exact viscosity and capacity (e.g., M20B25 ~4.5 liters).
Coolant:
BMW Blue or similar Ethylene Glycol-based coolant, mixed 50/50 with distilled water.
Transmission Fluid:
Manual: GL-4 gear oil (e.g., Pentosin MTF.94 or equivalent). Automatic: ATF Dexron III or equivalent.
Brake Fluid:
DOT 4 brake fluid.
Common Problems:
Coolant expansion tank cracking, fuel distributor issues (M-Jetronic), idle control valve problems, odometer gear failure, fuel pump failure, door seal degradation, rear subframe mounting reinforcement needed, rust (rocker panels, wheel wells).
Engine Specific Issues:
M20 'ringland failure' under high stress, M10 head gasket issues.
Bmw Heritage:
BMW has a long-standing reputation for building driver-focused, sporty vehicles with excellent engineering and performance.
E30 Introduction:
Introduced in 1982 as the successor to the E21 3 Series. It marked a significant evolution in BMW's compact executive car line.
Body Styles:
Initially launched as a 2-door sedan, followed by a 4-door sedan, convertible, and the highly successful M3 variant. A rare Touring (wagon) version was also produced in limited numbers.
M3 Development:
The E30 M3, launched in 1986, was homologated for racing and is considered one of the most iconic performance cars of its era, featuring a distinct body kit and the high-revving S14 engine.
Production Dates:
1982-1991 (Sedan/Coupe/Convertible), 1985-1988 (M3), 1987-1991 (Touring).
Manufacturing Locations:
Primarily Munich, Germany. Some assembly may have occurred in other BMW plants or through contract manufacturing.
Sales Figures:
Over 2.3 million E30s were produced worldwide, cementing its status as a highly successful BMW model.
Automotive Journalism:
Consistently praised by automotive publications for its handling, balance, and driver engagement. The E30 M3 in particular is a celebrated icon.
Performance Ratings:
Often rated highly for its sporty characteristics and as a benchmark for its class during its production run.
Classic Status:
Widely recognized as a modern classic and collectible car, appreciated by car clubs and enthusiasts worldwide.
