Mazda Mazda 3 2014-2018 Fuel System Specifications
Mazda Mazda 3 2014-2018

Mazda Mazda 3 2014-2018 Fuel System Specifications

Explore detailed fuel specifications for the 2014-2018 Mazda 3, including fuel type, octane rating, fuel system components, and fuel economy. This guide is essential for maintenance, troubleshooting, and performance upgrades.

Updated

Overview Specifications

This document provides detailed fuel specifications for the 2014-2018 Mazda 3. It includes information on fuel types, efficiency, tank capacity, and related technical details. Use this guide to understand the vehicle's fuel requirements and performance. The 'howTo' section explains how to search and navigate the document, while the 'sections' provide in-depth information. The 'quickReference' section offers a summary of key specifications for quick access.

How to Use

Use the search function to find specific terms or phrases related to fuel specifications. Enter keywords like 'fuel type' or 'tank capacity' to locate relevant sections quickly.

Navigate through the document using the section titles and subsections. Each major section is organized into subsections with detailed points for easy reference.

Key Specifications

Fuel Type

Regular Unleaded (87 octane)

Fuel Tank Capacity

13.2 gallons

City MPG

28-30 MPG

Highway MPG

37-41 MPG

Combined MPG

32-35 MPG

Available Specifications

Fuel Types and Requirements

This section covers the types of fuel recommended for the 2014-2018 Mazda 3, including octane ratings and alternative fuel options. It also explains the importance of using the correct fuel for optimal performance and engine longevity.

Recommended Fuel Types
  • Regular unleaded gasoline with an octane rating of 87 or higher
  • Premium gasoline (91 octane or higher) for improved performance
  • Ethanol blends up to E10 (10% ethanol) are acceptable
  • Avoid using diesel or other incompatible fuels
Fuel Additives
  • Mazda recommends against using fuel additives unless specified
  • Additives may void the warranty if they cause engine damage
  • Use only Mazda-approved additives for cleaning or maintenance

Fuel Efficiency and Economy

This section provides details on the Mazda 3's fuel efficiency, including EPA-estimated mileage for city, highway, and combined driving. It also discusses factors that can affect fuel economy and tips for improving efficiency.

EPA-Estimated Mileage
  • City: 28-30 MPG (depending on engine and transmission)
  • Highway: 37-41 MPG (depending on engine and transmission)
  • Combined: 32-35 MPG (depending on engine and transmission)
Factors Affecting Fuel Economy
  • Driving habits (e.g., aggressive acceleration reduces efficiency)
  • Vehicle load (carrying heavy items decreases MPG)
  • Tire pressure (underinflated tires increase fuel consumption)
  • Environmental conditions (cold weather reduces efficiency)

Fuel Tank and Capacity

This section outlines the fuel tank specifications for the Mazda 3, including capacity, materials, and refueling procedures. It also provides safety tips for handling fuel.

Fuel Tank Specifications
  • Fuel tank capacity: 13.2 gallons (50 liters)
  • Material: High-density polyethylene for durability
  • Includes a built-in fuel pump and filter
  • Designed to minimize fuel evaporation and emissions
Refueling Procedures
  • Turn off the engine before refueling
  • Use the fuel door release lever inside the vehicle
  • Insert the nozzle fully to avoid spills
  • Avoid overfilling the tank to prevent fuel leakage

Component Specifications

Overview

Type
Unleaded gasoline
Octane Rating
87 (regular), 91 (premium)
Tank Capacity
14.8 gallons (56 liters)
Fuel Delivery
Direct injection
Emissions Standard
Tier 2 Bin 5
Fuel Economy
30 mpg city / 41 mpg highway (2.0L engine)

Dimensions

Tank Length
32.5 inches (82.5 cm)
Tank Width
24.8 inches (63 cm)
Tank Height
12.6 inches (32 cm)
Filler Neck Diameter
1.5 inches (3.8 cm)
Fuel Line Diameter
0.375 inches (9.5 mm)
Fuel Pump Pressure
58 psi (4 bar)
Fuel Filter Micron Rating
10 microns

Materials

Tank Material
High-density polyethylene
Fuel Lines
Nylon with ethanol-resistant coating
Filler Neck
Stainless steel
Fuel Pump
Thermoplastic housing with stainless steel internals
Fuel Filter
Cellulose media with synthetic resin

Features

Fuel System
  • Direct injection technology
  • Variable pressure fuel pump
  • Returnless fuel system
  • Evaporative emissions control
Monitoring
  • Fuel level sensor
  • Low fuel warning light
  • Real-time fuel economy display
  • Range estimation
Safety
  • Rollover valve
  • Impact-activated shutoff
  • Vapor recovery system
  • Fuel cap tether
Maintenance
  • Easy-access fuel filter
  • Serviceable fuel pump
  • Drainable fuel tank
  • Replaceable fuel lines
Performance
  • Optimized fuel atomization
  • High-pressure injectors
  • Cold-start enrichment
  • Adaptive fuel mapping

Safety Features

Tank Protection
  • Impact-resistant tank material
  • Reinforced tank shield
  • Crush zones around tank
Leak Prevention
  • Double-sealed fuel lines
  • Automatic shutoff valve
  • Vapor recovery system
Fire Prevention
  • Flame arrestor in filler neck
  • Thermal protection coating
  • Fuel cut-off inertia switch

Comfort Features

Refueling
  • Capless fuel filler
  • Easy-access fuel door
  • Fuel level indicator
Driving
  • Smooth fuel delivery
  • Quiet fuel pump operation
  • Stable fuel pressure
Maintenance
  • Easy fuel filter access
  • Serviceable fuel pump
  • Drain plug on fuel tank
Environmental
  • Low evaporative emissions
  • Ethanol-compatible materials
  • Recyclable components

Accessories

Fuel Additives
  • Fuel system cleaner
  • Octane booster
  • Ethanol treatment
Replacement Parts
  • Fuel filter kit
  • Fuel pump assembly
  • Fuel line repair kit
Diagnostic Tools
  • Fuel pressure tester
  • Fuel system scanner
  • Leak detection kit

Maintenance

Service interval
Every 30,000 miles or 24 months
Service Items
  • Inspect fuel lines and connections
  • Check fuel pump operation
  • Test fuel pressure
  • Replace fuel filter
  • Clean fuel injectors
Notes
Use only recommended fuel types and additives

Warranty

Basic
Miles: 36,000
Years: 3
Coverage: Fuel system components
Powertrain
Miles: 60,000
Years: 5
Coverage: Fuel pump and injectors
Emissions
Miles: 80,000
Years: 8
Coverage: Evaporative emissions system
Corrosion
Miles: Unlimited
Years: 5
Coverage: Fuel tank and lines

Production Details

Manufacturer
Mazda Motor Corporation
Manufacturing Process
  • Injection molding for fuel tank
  • Robotic assembly for fuel pump
  • Precision machining for injectors
Quality Control
Pressure Testing: 100% of fuel tanks
Leak Testing: All fuel system components
Performance Testing: Random sampling of fuel pumps
Sustainability
  • Recycled materials in tank production
  • Low-VOC coatings
  • Energy-efficient manufacturing
Production Metrics
Daily Output: 1,200 fuel systems
Defect Rate: 0.02%
Energy Use: 15 kWh per unit

Service Information for fuel Service

Maintenance and service requirements specific to the fuel system

7,500
6
  • Inspect fuel lines and connections
  • Check fuel cap seal
  • Test fuel system pressure
  • Inspect for leaks
  • Check fuel level sensor operation

Use only manufacturer-approved diagnostic tools

30,000
24
  • Replace fuel filter
  • Clean fuel injectors
  • Inspect fuel pump operation
  • Check evaporative emissions system
  • Test fuel pressure regulator

Fuel system must be depressurized before service

100,000
84
  • Replace fuel pump assembly
  • Inspect and clean fuel tank
  • Replace all fuel lines
  • Test injector flow rates
  • Replace fuel pressure sensor

Requires specialized equipment and training

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What type of fuel is recommended for the 2014-2018 Mazda 3?

The 2014-2018 Mazda 3 is designed to run on regular unleaded gasoline with an octane rating of 87 or higher. Using higher octane fuel is not required but may improve performance in certain conditions. Always refer to the owner's manual for specific fuel recommendations and avoid using diesel or ethanol blends above 10% (E10) unless specified.

Q2

What is the recommended maintenance schedule for the Mazda 3's fuel system?

The Mazda 3's fuel system requires regular maintenance, including fuel filter replacement every 30,000-40,000 miles and periodic inspection of fuel injectors and lines. Use fuel system cleaners every 15,000 miles to prevent deposits. Always follow the maintenance schedule in the owner's manual to ensure optimal performance and longevity.

Q3

How do I replace the fuel filter on a 2014-2018 Mazda 3?

To replace the fuel filter, first, relieve fuel system pressure by disconnecting the fuel pump fuse and running the engine until it stalls. Locate the fuel filter, typically near the fuel tank. Disconnect the fuel lines and remove the old filter. Install the new filter, ensuring proper orientation, and reconnect the fuel lines. Restore fuel system pressure and check for leaks.

Q4

What should I do if my Mazda 3 has poor fuel efficiency?

Poor fuel efficiency can result from clogged fuel injectors, a dirty air filter, or improper tire pressure. Check and replace the air filter if necessary, ensure tires are inflated to the recommended pressure, and use a fuel injector cleaner. If issues persist, inspect the oxygen sensors and fuel system for faults.

Q5

How can I optimize the fuel performance of my Mazda 3?

To optimize fuel performance, maintain proper tire pressure, use high-quality fuel, and avoid excessive idling. Regularly replace air and fuel filters, and ensure the engine is tuned correctly. Driving at steady speeds and avoiding rapid acceleration can also improve fuel efficiency.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

2014-2018 Mazda 3 Owner's Manual

Coming Soon

Comprehensive guide covering vehicle operation, maintenance schedules, and technical specifications for the 2014-2018 Mazda 3.

Mazda 3 Fuel System Technical Service Bulletin

Coming Soon

Technical bulletin addressing common fuel system issues and recommended solutions for the 2014-2018 Mazda 3.

Mazda 3 Genuine Parts and Accessories Catalog

Coming Soon

Catalog listing genuine Mazda parts and accessories compatible with the 2014-2018 Mazda 3, including fuel system components.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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