2018 GMC Sierra Report
Known issues, recalls, running costs, and what to check before you buy.
Overall Score
Key Takeaways
- Exceptional reliability with no reported recalls or consumer complaints.
- The 6.2L V8 engine offers strong performance, paired with an 8-speed automatic transmission.
- Rear-wheel drive is standard, with four-wheel drive available on many trims.
- Fuel economy is rated at a combined 17 MPG for the 6.2L V8.
2018 GMC Sierra
Critical Failure Risk
Exceptional reliability with no reported recalls or consumer complaints.
Early detection can reduce the odds of major repair bills.
Safety & Bulletins
Owner Complaints
No primary complaint themes found.
Performance & Efficiency
Reliability
Practicality
The score is mainly limited by high fuel consumption.
Who This Car Is For
Best for
Buyers seeking a dependable full-size pickup for work or personal use.
+3 more buyer-fit notes in the full report
Avoid if
Buyers focused solely on the latest technology or advanced driver aids.
+2 more buyer-fit warnings in the full report
2018 GMC Sierra Reliability Analysis
Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2018 GMC Sierra.
Limited reliability records are available for this model year.
Vehicle Specs
- Fuel Type
- Premium
- Transmission
- Automatic 8-spd
- Drivetrain
- Rear-Wheel Drive
- EPA Combined MPG
- 17
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Most Common Issues
No complaint hotspot data available yet.
See all common issues in the maintenance guideFirst Service Interval
- Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation - Inspect Brake System - Inspect Wiper Blades
Est. shop cost: $100 - $200
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FAQ
Is the 2018 GMC Sierra reliable?
The CarFocal Reliability Score for the 2018 GMC Sierra is 9.6/10. Reliability score is 9.6/10. NHTSA recalls: 0. Owner complaints: 0.
How practical is the 2018 GMC Sierra for daily use?
Practicality score is 3.2/10. The score is mainly limited by high fuel consumption. EPA combined economy is 17 MPG. 4 passenger doors are listed.
What is the overall score for the 2018 GMC Sierra?
The CarFocal Overall Score for the 2018 GMC Sierra is 6.5/10. Overall score is 6.5/10 (Good). Confidence 55%. Maintenance 9.3/10. Practicality 3.2/10.
What does it cost to own and maintain a 2018 GMC Sierra?
Based on Carfocal's data, First listed service: - Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation - Inspect Brake System - Inspect Wiper Blades at 7,500 miles. Estimated first-year maintenance: $300 - $500.
What engine is in the 2018 GMC Sierra?
Engine specs list 8 • 6.2.
What transmission does the 2018 GMC Sierra use?
According to CarFocal's specs for the 2018 GMC Sierra, transmission is Automatic 8-spd. The paired drivetrain is Rear-Wheel Drive.
Does the 2018 Sierra require Premium gas?
Manufacturer fuel recommendation: Premium.
What is the combined EPA MPG for the 2018 GMC Sierra?
EPA combined estimate is 17 MPG.
What driver assistance and safety features are available on the 2018 GMC Sierra?
5 standard and 3 optional driver assistance features. Key features include Anti-lock Braking System, Electronic Stability Control, Tire Pressure Monitoring System.
What drivetrain does the 2018 GMC Sierra use?
According to CarFocal's specs for the 2018 GMC Sierra, drivetrain is Rear-Wheel Drive. Transmission is Automatic 8-spd.
Should buyers consider alternatives to the 2018 GMC Sierra?
Alternatives listed in this guide: 2018 Ford F-150 and 2018 Ram 1500.