🏷️ Basic Information

Make:

Mazda

Model:

MX-5

Model Code:

NB

Year:

2004

Generation Name:

Second Generation (NB)

Generation Years:

1998-2005

Chassis Codes:

NB8C

Engine Codes:

BP-Z3 (1.8L)

👋 Introduction

Vehicle Segment:

Lightweight, rear-wheel-drive, two-seater convertible sports car.

Key Selling Points:

Affordability, reliability, engaging driving dynamics, open-top motoring experience, iconic roadster design.

Direct Competitors:

Porsche Boxster, BMW Z3/Z4, Honda S2000, Toyota MR2 Spyder.

Powertrain Layout:

Front-engine, rear-wheel-drive.

Body Style:

Two-door convertible roadster.

Chassis Design:

Lightweight construction with balanced weight distribution.

📋 Manual Details

Coverage Scope:

All Models & All Repairs A-Z

Vehicle Specificity:

Vehicle Specific (Not Generic)

Target Audience:

Dealership Technicians, Professional Mechanics, DIY Enthusiasts

Estimated Page Count:

Approximately 1500-2500 (typical for comprehensive dealer service manuals)

Manual Type:

Factory Service Manual (FSM) / Repair Manual

Language:

English

Format:

Digital (likely PDF, as commonly distributed for this era)

📖 Manual Coverage

Engine Systems:

Engine mechanical, fuel injection, ignition, lubrication, cooling, emissions control, starting and charging, engine management (ECU/PCM).

Transmission Drivetrain:

Manual Transmission (MT), Automatic Transmission (AT), clutch system, driveshafts, differential, axles.

Suspension Steering:

Front and rear suspension components (shocks, springs, control arms, bushings), steering system (rack and pinion, power steering).

Brakes:

Front and rear brake systems (disc brakes), ABS (Anti-lock Braking System), parking brake.

Electrical Electronics:

Complete vehicle electrical system, wiring diagrams, lighting, instrument cluster, audio system, power windows/locks, HVAC controls, immobilizer system, OBD-II diagnostics.

Body Chassis:

Body panel removal/installation, interior trim, doors, glass, convertible top mechanism, chassis structure, collision repair information.

Maintenance Procedures:

Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement, brake pad/rotor replacement.

Diagnostic Procedures:

Troubleshooting flowcharts, diagnostic trouble codes (DTCs) explanation and resolution, symptom-based diagnostics.

Repair Procedures:

Engine component overhaul, transmission removal and repair, suspension and steering component replacement, brake system bleeding and component replacement, electrical component diagnosis and replacement.

Special Procedures:

Convertible top mechanism repair, convertible top fluid change, wheel alignment specifications and procedures, tire balancing, engine timing adjustments.

Depth Of Coverage:

Comprehensive: From basic scheduled maintenance to complete engine and transmission rebuilds, including detailed component disassembly and reassembly instructions.

Diagnostic Tools Required:

Specifies necessary diagnostic tools, scan tools (including Mazda-specific functions), specialized wrenches, torque wrenches, and measuring instruments.

Service Data:

Includes detailed specifications, tolerances, torques, clearances, and diagnostic data essential for accurate repairs.

📊 Manual Specifications

Digital Format:

Likely PDF with searchable text and high-resolution diagrams.

Image Resolution:

High resolution for clear diagrams, schematics, and photographs.

Binding Type:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Type:

Naturally Aspirated Inline 4-Cylinder (DOHC)

Engine Code:

BP-Z3

Displacement:

1.8 Liters (1839 cc)

Horsepower:

140-146 hp @ 6500 rpm (depending on specific market/tune)

Torque:

119-122 lb-ft @ 5000 rpm (depending on specific market/tune)

Fuel Delivery:

Electronic Fuel Injection (EFI)

Fuel Type:

Unleaded gasoline

Spark Plug Type:

NGK PFR6A-11 or equivalent

Engine Oil Type:

API SG, SH, or SJ certified SAE 5W-30 or 10W-30. Check manual for specific viscosity based on temperature.

Engine Oil Capacity:

Approximately 4.0 US quarts (3.8 liters) with filter change.

Coolant Type:

Mazda Genuine Long Life Antifreeze or equivalent (typically ethylene glycol-based, long-life formulation).

🔧 Transmission

Standard Transmission Type:

6-speed Manual Transmission

Optional Transmission Type:

4-speed Automatic Transmission

Manual Transmission Fluid:

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

Automatic Transmission Fluid:

Mazda ATF M-III or equivalent (Dexron III compatible).

Clutch Type:

Dry single plate with hydraulic actuation.

📐 Dimensions

Length:

157.7 inches (4005 mm)

Width:

67.7 inches (1720 mm)

Height:

49.8 inches (1265 mm)

Wheelbase:

89.2 inches (2265 mm)

Curb Weight:

Approximately 2400-2550 lbs (1090-1155 kg), depending on transmission and options.

Gross Vehicle Weight Rating Gvwr:

Approximately 3086 lbs (1400 kg)

Towing Capacity:

Not recommended or specified for towing.

Trunk Capacity:

Approximately 4.7 cubic feet (133 liters)

🛡️ Safety Features

NHTSA Front Impact Driver:

4 Stars (for 2004 model year)

NHTSA Front Impact Passenger:

4 Stars (for 2004 model year)

IIHS Small Overlap Front:

Not Rated (vehicle pre-dates this testing protocol)

ABS:

Standard Anti-lock Braking System (ABS).

Traction Control:

Optional Traction Control System (TCS) on some models/trims.

Airbags:

Driver and front passenger airbags.

Rollover Protection:

Reinforced windshield frame and pop-up roll bars behind the seats.

Seatbelts:

Three-point seatbelts with pretensioners.

💡 Technology Features

Audio System:

Factory AM/FM/CD player, often with 4-6 speakers. Upgrades were common.

Climate Control:

Manual or automatic climate control systems depending on trim level.

Cruise Control:

Available on most models.

OBD Ii Port:

Standard OBD-II diagnostic port for emission and engine system monitoring.

🔧 Maintenance

Oil Change Interval:

Every 5,000 miles (8,000 km) or 6 months, whichever comes first.

Engine Air Filter Replacement:

Inspect every 15,000 miles (24,000 km), replace as needed.

Cabin Air Filter Replacement:

Inspect every 15,000 miles (24,000 km), replace as needed.

Coolant Flush Interval:

Every 60,000 miles (100,000 km) or 4 years.

Brake Fluid Flush Interval:

Every 2 years (regardless of mileage) due to moisture absorption.

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid.

Power Steering Fluid:

Dexron III ATF or equivalent (if equipped with power steering).

Oil Consumption:

Some NB models, particularly early ones or those with high mileage, can experience increased oil consumption due to worn piston rings or valve stem seals. The manual will detail checks and potential fixes.

Coolant Leaks:

Potential for radiator leaks or hose degradation over time. Regular inspection is advised.

Convertible Top Leaks:

Aging seals and fabric can lead to water intrusion. Manual will cover seal maintenance and adjustment.

Clutch Wear:

As with any manual transmission car, clutch wear is a maintenance item. The manual provides clutch inspection and replacement procedures.

📚 Vehicle History

Mazda Motorsport Legacy:

Mazda has a strong heritage in motorsport, particularly with its rotary engines and lightweight sports cars. The MX-5 carries this DNA.

Na Generation Introduction:

The first generation (NA) revolutionized the sports car market, establishing the MX-5's reputation for affordability and driving fun.

Nb Generation Update:

The NB generation (1998-2005) was an evolution of the NA, featuring a stiffer chassis, updated styling (retracting headlights were replaced with fixed ones), and a more powerful engine option in later years.

Production Plant:

Mazda's Hofu Plant, Yamaguchi Prefecture, Japan.

Production Years Nb:

1998-2005

🏆 Awards & Recognition

Car And Driver 10Best:

The MX-5, in its various generations, has been a frequent recipient of Car and Driver's '10Best' list for its exceptional driving dynamics and value.

Motor Trend Car Of The Year:

While not a 'Car of the Year' winner, the MX-5 has consistently received praise from automotive journalists worldwide.

Reliability Ratings:

Consistently rated as a reliable vehicle by organizations like Consumer Reports.