2020 GMC Sierra Report
Known issues, recalls, running costs, and what to check before you buy.
Overall Score
Key Takeaways
- Excellent reliability with zero recalls and complaints.
- The 4.3L V6 engine provides dependable, though not class-leading, performance.
- Combined fuel economy of 15 MPG means higher operating costs.
- 4-wheel drive enhances capability in various conditions.
2020 GMC Sierra
Critical Failure Risk
Excellent reliability with zero recalls and 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 prioritizing reliability and a low-risk purchase.
+2 more buyer-fit notes in the full report
Avoid if
Eco-conscious buyers seeking maximum fuel efficiency.
+1 more buyer-fit warnings in the full report
2020 GMC Sierra Reliability Analysis
Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2020 GMC Sierra.
Limited reliability records are available for this model year.
Vehicle Specs
- Fuel Type
- Regular
- Seating Capacity
- 6
- Transmission
- Automatic 6-spd
- Drivetrain
- 4-Wheel Drive
- Body Style
- Pickup
- EPA Combined MPG
- 15
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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 Wiper Blades
Est. shop cost: $75 - $150
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FAQ
Is the 2020 GMC Sierra reliable?
The CarFocal Reliability Score for the 2020 GMC Sierra is 9.5/10. Reliability score is 9.5/10. NHTSA recalls: 0. Owner complaints: 0.
How practical is the 2020 GMC Sierra for daily use?
Practicality score is 3.5/10. The score is mainly limited by high fuel consumption. EPA combined economy is 15 MPG. Seating capacity is 6.
What is the overall score for the 2020 GMC Sierra?
The CarFocal Overall Score for the 2020 GMC Sierra is 6.9/10. Overall score is 6.9/10 (Good). Confidence 55%. Maintenance 9.7/10. Practicality 3.5/10.
What does it cost to own and maintain a 2020 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 Wiper Blades at 7,500 miles. Estimated first-year maintenance: $200 - $400.
What engine is in the 2020 GMC Sierra?
Engine specs list 6 • 4.3.
What transmission does the 2020 GMC Sierra use?
According to CarFocal's specs for the 2020 GMC Sierra, transmission is Automatic 6-spd. The paired drivetrain is 4-Wheel Drive.
What is the combined EPA MPG for the 2020 GMC Sierra?
EPA combined estimate is 15 MPG.
What driver assistance and safety features are available on the 2020 GMC Sierra?
6 standard and 9 optional driver assistance features. Key features include Anti-lock Braking System, Electronic Stability Control, Traction Control.
How many people fit in a 2020 GMC Sierra?
According to CarFocal's specs for the 2020 GMC Sierra, seating capacity is 6.
What body style is the 2020 GMC Sierra?
According to CarFocal's specs for the 2020 GMC Sierra, body style is pickup.
What drivetrain does the 2020 GMC Sierra use?
According to CarFocal's specs for the 2020 GMC Sierra, drivetrain is 4-Wheel Drive. Transmission is Automatic 6-spd.
Should buyers consider alternatives to the 2020 GMC Sierra?
Alternatives listed in this guide: 2020 Ford F-150 and 2020 Ram 1500.