Acura RLX 2014-2020 Fuel System Specifications
Acura RLX 2014-2020

Acura RLX 2014-2020 Fuel System Specifications

Detailed technical guide for the 2014-2020 Acura RLX fuel system, including specifications, maintenance tips, and troubleshooting. Learn about fuel type, pump, injector, and pressure standards for optimal performance.

Updated

2014-2020 Acura RLX Fuel Specifications Overview Specifications

This document provides a comprehensive overview of the fuel specifications for the 2014-2020 Acura RLX. It includes detailed information on fuel capacity, economy, engine requirements, and maintenance tips. Use this guide to understand the fuel-related features and ensure optimal performance for your vehicle. Navigate through the sections below for specific details.

How to Use

To find specific information, use the search bar at the top of the document. Enter keywords such as 'fuel capacity,' 'mpg,' or 'octane' to locate relevant sections quickly. Use the filter options to narrow down results by category or model year.

Explore the document by navigating through the sections listed on the left-hand side. Each section provides detailed subsections with technical specifications and practical advice. Click on a section title to expand its contents and access specific details.

Key Specifications

Fuel Capacity

18.5 gallons

EPA MPG (City/Highway/Combined)

20/31/24 MPG

Recommended Fuel

Premium unleaded (91 octane)

Engine Size

3.5L V6

Max Horsepower

310 HP @ 6,500 RPM

Available Specifications

Fuel Capacity and Economy

This section outlines the fuel capacity, fuel economy ratings, and estimated driving ranges for the 2014-2020 Acura RLX. It also includes tips for optimizing fuel efficiency.

Fuel Tank Capacity
  • Fuel tank capacity: 18.5 gallons
  • Fuel tank material: High-density polyethylene
  • Fuel tank location: Rear of the vehicle
  • Fuel tank shape: Optimized for space efficiency
  • Fuel tank features: Anti-slosh baffles for stability
EPA Fuel Economy Ratings
  • City: Up to 20 MPG
  • Highway: Up to 31 MPG
  • Combined: Up to 24 MPG
  • Actual mileage may vary based on driving conditions
  • Hybrid models (2014-2015) offer improved economy

Fuel Requirements

This section provides details on the recommended fuel type, octane rating, and fuel system compatibility for the 2014-2020 Acura RLX.

Recommended Fuel
  • Recommended fuel: Premium unleaded gasoline (91 octane or higher)
  • Minimum fuel requirement: Regular unleaded gasoline (87 octane)
  • Using lower octane may reduce performance
  • Using higher octane does not improve performance
  • Ethanol-blended fuel (up to E15) is acceptable

Engine and Fuel System Features

This section details the engine specifications, fuel injection system, and advanced fuel-saving technologies in the 2014-2020 Acura RLX.

Engine Specifications
  • Engine type: 3.5L V6 (SOHC)
  • Cylinders: 6
  • Valves: 24 (4 per cylinder)
  • Horsepower: 310 HP @ 6,500 RPM
  • Torque: 272 lb-ft @ 4,500 RPM
Fuel Injection System
  • Fuel injection type: Direct fuel injection
  • Fuel injector flow rate: Optimized for efficiency
  • Fuel pressure: 50 bar
  • Fuel injectors: 6 (1 per cylinder)
  • Fuel injector cleaning interval: Every 30,000 miles
Fuel-Saving Technologies
  • Variable Cylinder Management (VCM)
  • Eco Assist system
  • Idle stop feature (hybrid models)
  • Smart alternator
  • Low-friction engine components

Maintenance and Tips

This section offers guidance on fuel system maintenance, troubleshooting, and tips for improving fuel efficiency in the 2014-2020 Acura RLX.

Fuel System Maintenance
  • Fuel filter replacement interval: Every 15,000 miles
  • Fuel injector cleaning interval: Every 30,000 miles
  • Fuel tank inspection: Every 5 years or 60,000 miles
  • Fuel line inspection: Every 5 years or 60,000 miles
  • Spark plug replacement interval: Every 30,000 miles
Fuel Efficiency Tips
  • Drive at moderate speeds (45-60 MPH) for optimal economy
  • Maintain proper tire pressure
  • Avoid aggressive acceleration and braking
  • Remove extra weight from the vehicle
  • Use cruise control on highways
  • Plan routes to minimize traffic and idling

Component Specifications

Overview

Type
Gasoline
Configuration
V6
Engine Code
J35Z6
Fuel injection
Direct Injection
Location
Midship

Dimensions

Fuel Tank Capacity
18.5 gallons (69.9 liters)
Fuel Line Diameter
12mm
Fuel Pump Flow Rate
120 liters per hour
Fuel injector Flow Rate
5.5 mg/stroke
Fuel Pressure
55 psi (3.8 bar)

Materials

Fuel Tank
High-Density Polyethylene (HDPE)
Fuel Lines
Nylon or Rubber
Fuel injectors
Stainless Steel
Fuel Pump
Metal with Plastic Components

Features

Fuel Efficiency
  • Direct Injection
  • Variable Cylinder Management (VCM)
  • Eco Assist System
Fuel System Features
  • Automatic Fuel Shut-Off
  • Returnless Fuel System
Engine Performance
  • VTEC (Variable Valve Timing & Lift Electronic Control)
  • Dual-Scroll Turbocharger (on certain models)
Emissions Control
  • Catalytic Converter
  • Exhaust Gas Recirculation (EGR)
Sound Reduction
  • Hydrogenated Catalyst
  • Advanced Muffler Design

Safety Features

Crash Resistant Fuel Tank
Yes
Multiple Check Valves
Yes
Pressure Relief System
Yes
Fuel Cut Off in Case Of Crash
Yes

Comfort Features

Quick Fuel Fill
Yes
Fuel Door Release
Electric
Low Fuel Warning
Yes
Fuel Efficiency Display
Yes
Real Time Fuel Consumption
Yes

Accessories

Fuel Cap
Locking Fuel Cap
Fuel Filler
Aluminum Alloy
Fuel Hose
High-Temperature Resistant

Maintenance

Service interval
15,000 miles (24,140 km) or 12 months
Maintenance Items
  • Inspect fuel cap
  • Check fuel lines for leaks
  • Clean fuel injectors
  • Check fuel pressure
  • Inspect fuel tank for damage
Notes
Use gasoline with octane rating of 91 or higher for optimal performance.

Warranty

Basic Warranty
Miles: 50,000 miles
Years: 4 years
Coverage: Bumper-to-Bumper
Powertrain Warranty
Miles: 70,000 miles
Years: 6 years
Coverage: Powertrain Components
Emissions Warranty
Miles: 150,000 miles
Years: 15 years
Coverage: Emissions-Related Components
Accessories Warranty
Miles: 50,000 miles
Years: 4 years
Coverage: Accessories

Production Details

Manufacturer
Honda Motor Co., Ltd.
Manufacturing Process
  • Robotic Welding
  • Laser Cutting
  • High-Precision Machining
Quality Control
inspection: Multi-Point Inspection System
Testing: Pressure Testing
Certification: ISO 9001:2015 Certified
Sustainability Practices
  • Recycling of Materials
  • Energy-Efficient Manufacturing
  • Reduction of Emissions
Production Metrics
Annual Output: Over 10,000 units
Factory Location: Marysville, Ohio, USA

Service Information for Fuel System Service

Maintenance and service requirements specific to the fuel system

15,000 miles
12 months
  • Inspect fuel cap for proper sealing
  • Check fuel lines and connections for leaks
  • Inspect fuel injectors for cleanliness
  • Check fuel pressure
  • Test fuel pump operation

Ensure all inspections are done with the vehicle on level ground.

30,000 miles
24 months
  • Clean fuel injectors
  • Replace fuel filter
  • Inspect fuel tank for any signs of damage
  • Check fuel system for any leaks
  • Test fuel system pressure

Recommended to use OEM parts for replacements.

60,000 miles
60 months
  • Replace fuel pump if necessary
  • Inspect and replace fuel lines if damaged
  • Clean fuel injectors and test flow rate
  • Replace fuel pressure regulator if needed
  • Perform comprehensive fuel system diagnostic test

Major service should be performed by a certified technician.

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What type of fuel is recommended for the 2014-2020 Acura RLX?

The 2014-2020 Acura RLX is designed to run on premium unleaded gasoline with an octane rating of 91 or higher. Using lower octane fuel may result in reduced performance and fuel efficiency.

Q2

What is the fuel tank capacity of the 2014-2020 Acura RLX?

The fuel tank capacity of the 2014-2020 Acura RLX is 18.5 gallons (70 liters). This allows for an estimated driving range of approximately 450-500 miles depending on driving conditions and fuel efficiency.

Q3

Can I use ethanol-blended fuel in the 2014-2020 Acura RLX?

Yes, the 2014-2020 Acura RLX can use ethanol-blended fuels containing up to 10% ethanol (E10). However, fuels with higher ethanol concentrations, such as E15 or E85, are not recommended and may cause engine damage.

Q4

What is the fuel economy of the 2014-2020 Acura RLX?

The 2014-2020 Acura RLX achieves an EPA-estimated fuel economy of 20 mpg in the city and 31 mpg on the highway for the front-wheel-drive model. The all-wheel-drive model has slightly lower fuel efficiency at 19 mpg city and 30 mpg highway.

Q5

What should I do if I accidentally use the wrong type of fuel?

If you accidentally use fuel with an octane rating lower than 91 or a high ethanol blend, avoid driving the vehicle and contact an authorized Acura service center immediately. Running the engine with improper fuel can cause knocking, reduced performance, and potential engine damage.

Factory Service Resources

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

Acura RLX Owner's Manual

Coming Soon

The official owner's manual for the 2014-2020 Acura RLX, containing detailed fuel specifications, maintenance schedules, and safety information.

Fuel System Maintenance Guide

Coming Soon

A comprehensive guide on maintaining the fuel system of the 2014-2020 Acura RLX, including fuel filter replacement and injector cleaning procedures.

Acura Genuine Parts Catalog

Coming Soon

Access the official catalog of Acura genuine parts, including fuel system components, to ensure optimal performance and warranty compliance.

Fuel Efficiency Tips for Acura RLX

Coming Soon

Learn how to maximize fuel efficiency and reduce emissions with driving tips and maintenance recommendations specific to the 2014-2020 Acura RLX.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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