Buick Regal 2018-present Fuel System Specifications
Buick Regal 2018-present

Buick Regal 2018-present Fuel System Specifications

Explore the detailed fuel system specifications for the 2018-Present Buick Regal, including fuel type, tank capacity, economy ratings, and emission compliance. Essential for maintenance, performance optimization, and environmental compliance.

Updated

Overview Specifications

This document provides detailed fuel specifications and related information for the 2018-Present Buick Regal. It is designed to help owners and enthusiasts understand the fuel requirements, efficiency, and performance characteristics of the vehicle. The document is organized into sections that cover fuel type, consumption, tank capacity, and more. Use the search and navigation instructions to quickly find the information you need.

How to Use

Use the search function to quickly locate specific fuel-related terms or specifications. Enter keywords such as 'fuel type' or 'mpg' to find relevant sections instantly.

Navigate through the document using the section titles in the table of contents. Click on any section to jump directly to that part of the document. Each section is further divided into subsections for detailed information.

Key Specifications

Fuel Type

Unleaded Gasoline

Octane Rating

87 (min)

Fuel Tank Capacity

15.6 gal

City MPG

22

Highway MPG

32

Available Specifications

Fuel Type and Requirements

This section details the type of fuel recommended for the 2018-Present Buick Regal, as well as any specific requirements or considerations for optimal performance and efficiency.

Recommended Fuel Type
  • The Buick Regal requires unleaded gasoline with an octane rating of 87 or higher.
  • Premium gasoline with an octane rating of 91 or higher is recommended for optimal performance.
  • Using fuel with lower octane ratings may result in reduced engine performance and efficiency.
  • Do not use diesel fuel or any fuel with added ethanol beyond 10% (E10).
Fuel Additives
  • Use of fuel additives is generally not necessary for the Buick Regal.
  • If additives are used, ensure they are compatible with the vehicle's fuel system.
  • Avoid additives containing methanol or other harmful chemicals.
  • Regular fuel system cleaning can help maintain engine performance.

Fuel Efficiency and Consumption

This section provides information on the fuel efficiency and consumption rates of the 2018-Present Buick Regal, including city, highway, and combined MPG ratings.

MPG Ratings
  • City MPG: 22
  • Highway MPG: 32
  • Combined MPG: 26
  • Actual mileage may vary based on driving conditions and habits.
  • Eco driving techniques can improve fuel efficiency.
Factors Affecting Fuel Consumption
  • Aggressive driving can significantly reduce fuel efficiency.
  • Proper tire inflation and maintenance can improve MPG.
  • Use of air conditioning and other electrical systems can increase fuel consumption.
  • Regular engine maintenance ensures optimal fuel efficiency.

Fuel Tank and Capacity

This section covers the fuel tank specifications of the 2018-Present Buick Regal, including capacity, refueling procedures, and safety considerations.

Fuel Tank Capacity
  • The fuel tank has a capacity of 15.6 gallons (59 liters).
  • Refuel when the fuel level is low to avoid running out of fuel.
  • The fuel gauge provides an accurate reading of the remaining fuel.
  • The low fuel warning light will illuminate when fuel is critically low.
Refueling Procedures
  • Always turn off the engine before refueling.
  • Use the fuel door release button located inside the vehicle.
  • Ensure the fuel cap is securely tightened after refueling.
  • Avoid overfilling the fuel tank to prevent spillage.

Component Specifications

Overview

Type
Gasoline
Configuration
Direct Injection
Platform
E2XX
Material
Aluminum Alloy
Location
Front Engine

Dimensions

Fuel Tank Capacity
15.6 gallons (59.0 liters)
Fuel Line Diameter
0.25 inches (6.35 mm)
Fuel Pump Pressure
58 psi (400 kPa)
Fuel Filter Size
2.5 inches (63.5 mm)
Fuel injector Flow Rate
24.5 lb/hr (2.76 g/s)
Fuel Rail Length
16.9 inches (429 mm)
Fuel Tank Dimensions
28.3 x 18.1 x 10.6 inches (719 x 460 x 269 mm)

Materials

Fuel Tank
High-density polyethylene
Fuel Lines
Nylon 12 with rubber coating
Fuel Pump
Stainless steel with carbon brushes
Fuel injectors
Stainless steel with Teflon seals

Features

Fuel Delivery
  • High-pressure direct injection
  • Electronic fuel pressure regulator
  • Returnless fuel system
  • Sequential fuel injection
Monitoring
  • Fuel level sensor
  • Fuel pressure sensor
  • Fuel temperature sensor
  • Evaporative emissions monitoring
Efficiency
  • Active Fuel Management
  • Variable valve timing
  • Electronic throttle control
  • Optimized combustion chamber
Safety
  • Rollover valve
  • Fuel cutoff switch
  • Impact-resistant fuel tank
  • Leak detection system
Maintenance
  • Easy-access fuel filter
  • Serviceable fuel pump
  • Self-diagnosing fuel system
  • Removable fuel rail

Safety Features

Crash Protection
  • Automatic fuel cutoff in collisions
  • Reinforced fuel tank shield
Fire Prevention
  • Flame arrestor in fuel tank
  • Heat shields around fuel lines
Emissions Control
  • Evaporative emissions system
  • Sealed fuel system

Comfort Features

Driving
  • Smooth fuel delivery
  • Instant throttle response
  • Quiet fuel pump operation
Monitoring
  • Accurate fuel gauge
  • Low fuel warning
  • Miles to empty calculation
Refueling
  • Capless fuel filler
  • Automatic fuel door
  • Easy-access fuel cap
Maintenance
  • Service reminders
  • Self-diagnostic system
  • Easy fuel filter access

Accessories

Fuel System
  • Fuel injector cleaner
  • Fuel system treatment
  • Fuel stabilizer
Monitoring
  • Fuel pressure gauge
  • Fuel flow meter
  • Fuel consumption monitor
Upgrades
  • High-flow fuel pump
  • Performance fuel injectors
  • Upgraded fuel pressure regulator

Maintenance

Service interval
7,500 miles or 12 months
Service Items
  • Fuel filter replacement
  • Fuel system cleaning
  • Fuel injector inspection
  • Fuel pump check
  • Fuel line inspection
Maintenance Notes
Use only premium unleaded gasoline (91 octane or higher) for optimal performance

Warranty

Basic
Miles: 36,000
Years: 3
Coverage: Fuel system components
Powertrain
Miles: 60,000
Years: 5
Coverage: Fuel pump and injectors
Emissions
Miles: 50,000
Years: 4
Coverage: Fuel evaporative system
Corrosion
Miles: 100,000
Years: 6
Coverage: Fuel tank and lines

Production Details

Manufacturer
General Motors
Manufacturing Process
  • Automated fuel system assembly
  • Laser-welded fuel rails
  • Precision fuel injector calibration
Quality Control
Pressure Testing: All fuel lines and components
Leak Detection: Complete fuel system
Performance Verification: Fuel flow and pressure
Sustainability Practices
  • Recycled materials in fuel tank
  • Low-emission manufacturing
  • Energy-efficient production
Production Metrics
Annual Units: 500,000
Defect Rate: 0.02%
Production Time: 4.5 hours per unit

Service Information for fuel Service

Maintenance and service requirements specific to the fuel system

7,500
12
  • Inspect fuel lines and connections
  • Check fuel pressure
  • Test fuel pump operation
  • Inspect fuel tank for damage
  • Check fuel system for leaks

Use only approved fuel system cleaners

15,000
24
  • Replace fuel filter
  • Clean fuel injectors
  • Inspect fuel rail
  • Check fuel level sensor
  • Test evaporative emissions system

Perform fuel system pressure test

30,000
36
  • Replace fuel pump if necessary
  • Inspect fuel tank shield
  • Check fuel pressure regulator
  • Test fuel injector flow rate
  • Inspect all fuel system hoses

Requires specialized diagnostic equipment

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What type of fuel does the 2018-Present Buick Regal use?

The 2018-Present Buick Regal typically uses regular unleaded gasoline with an octane rating of 87. However, for optimal performance, especially in turbocharged models, 91 octane or higher is recommended. Using lower octane fuel may result in reduced performance and fuel efficiency.

Q2

What is the fuel tank capacity of the 2018-Present Buick Regal?

The fuel tank capacity for the 2018-Present Buick Regal varies by model. The standard models typically have a fuel tank capacity of approximately 15.6 gallons (59 liters), while sport models may have slightly larger tanks. It's important to refer to your owner's manual for exact specifications.

Q3

Can I use alternative fuels in my Buick Regal?

The 2018-Present Buick Regal is designed to run on unleaded gasoline. Using alternative fuels such as E85 or biodiesel is not recommended unless explicitly stated in your owner's manual. Using incompatible fuels can damage the fuel system and void your warranty.

Q4

How often should I replace the fuel filter in my Buick Regal?

The fuel filter in your 2018-Present Buick Regal should be replaced every 30,000 to 45,000 miles, depending on driving conditions. Regular replacement ensures optimal fuel flow and prevents potential engine issues.

Q5

What are the symptoms of a faulty fuel pump in the Buick Regal?

Common symptoms of a faulty fuel pump include difficulty starting the engine, sputtering or stalling, low fuel pressure, and a whining noise from the rear of the vehicle. If you experience any of these symptoms, have your vehicle inspected by a certified mechanic as soon as possible.

Factory Service Resources

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

Buick Regal Service Manual

Coming Soon

Comprehensive service manual covering technical specifications, maintenance schedules, and repair procedures for the 2018-Present Buick Regal.

Fuel System Technical Bulletin

Coming Soon

Technical bulletin providing updates and specifications for the fuel system of the 2018-Present Buick Regal.

Buick Regal Parts Catalog

Coming Soon

Detailed catalog of parts and accessories for the 2018-Present Buick Regal, including fuel system components.

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.

15+ Years
Experience
500+ Guides
Guides
50+ Makes
Vehicles
1000+ Solutions
Solutions

Diagnostic

Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

  • ASE Master Technician Certification
  • Advanced Diagnostic Specialist
  • Hybrid/Electric Vehicle Systems
  • Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

Legal Disclaimer

Important information about using this content

Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.

General Information
The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
Warranty & Liability

The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.

We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.

Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
  • Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
  • If you're unsure about any procedure, consult a qualified professional mechanic.
Intellectual Property
All content, including text, images, and specifications, is protected by copyright and other intellectual property laws. Any unauthorized use or reproduction is prohibited.

© 2025 Buick Specs. All rights reserved.