2021 GMC Sierra Report
Known issues, recalls, running costs, and what to check before you buy.
Overall Score
Key Takeaways
- Excellent reliability indicated by zero recalls and zero complaints.
- The 5.3L V8 engine delivers strong performance for work and play.
- 4-wheel drive enhances traction in various conditions.
- Fuel economy is rated at 14 MPG combined, leading to higher fuel costs.
2021 GMC Sierra
Critical Failure Risk
Excellent reliability indicated by zero recalls and zero complaints.
Early detection can reduce the odds of major repair bills.
Safety & Bulletins
Owner Complaints
No primary complaint themes found.
Performance & Efficiency
- Horsepower
- 355HP
- Torque
- 383 lb–ftLB-FT
Reliability
Practicality
The score is mainly limited by high fuel consumption.
Who This Car Is For
Best for
Buyers seeking a dependable truck for work or personal use.
+3 more buyer-fit notes in the full report
Avoid if
Buyers prioritizing top-tier safety ratings, as this model is not rated.
+2 more buyer-fit warnings in the full report
2021 GMC Sierra Reliability Analysis
Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2021 GMC Sierra.
Limited reliability records are available for this model year.
Vehicle Specs
- Fuel Type
- Regular
- Seating Capacity
- 5
- Horsepower
- 355 hp
- Torque
- 383 lb-ft
- Transmission
- Automatic
- Drivetrain
- 4-Wheel Drive
- Body Style
- Pickup
- MSRP Range
- $40,695 - $65,700
- EPA Combined MPG
- 14
CarFocal account required
See the full 2021 GMC Sierra buyer report before you decide
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 - $180
Unlock the full maintenance guide for every scheduled service interval and cost forecast.
Free • Takes 20 seconds • Saves Thousands $
Already have an account? Log in
FAQ
Is the 2021 GMC Sierra reliable?
The CarFocal Reliability Score for the 2021 GMC Sierra is 9.9/10. Reliability score is 9.9/10. NHTSA recalls: 0. Owner complaints: 0.
How practical is the 2021 GMC Sierra for daily use?
Practicality score is 5.8/10. The score is mainly limited by high fuel consumption. EPA combined economy is 14 MPG. Seating capacity is 5. 4 passenger doors are listed. Boot capacity is 2523 litres.
What is the overall score for the 2021 GMC Sierra?
The CarFocal Overall Score for the 2021 GMC Sierra is 6.9/10. Overall score is 6.9/10 (Good). Confidence 55%. Maintenance 9.3/10. Practicality 5.8/10.
What does it cost to own and maintain a 2021 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: $400 - $700.
What is the MSRP range for the 2021 GMC Sierra?
MSRP range is $40,695 - $65,700.
What engine is in the 2021 GMC Sierra?
Engine specs list V8 • 8 • 5.3. Output is 355 hp • 383 lb-ft.
What transmission does the 2021 GMC Sierra use?
According to CarFocal's specs for the 2021 GMC Sierra, transmission is Automatic. The paired drivetrain is 4-Wheel Drive.
What is the combined EPA MPG for the 2021 GMC Sierra?
EPA combined estimate is 14 MPG.
What driver assistance and safety features are available on the 2021 GMC Sierra?
9 standard and 5 optional driver assistance features. Key features include Anti-lock Braking System, Electronic Stability Control, Traction Control.
What is the fuel economy range for the 2021 GMC Sierra?
According to CarFocal's specs for the 2021 GMC Sierra, fuel economy range is 13-17 mpg combined.
How many people fit in a 2021 GMC Sierra?
According to CarFocal's specs for the 2021 GMC Sierra, seating capacity is 5.
What body style is the 2021 GMC Sierra?
According to CarFocal's specs for the 2021 GMC Sierra, body style is pickup.
What drivetrain does the 2021 GMC Sierra use?
According to CarFocal's specs for the 2021 GMC Sierra, drivetrain is 4-Wheel Drive. Transmission is Automatic.
Should buyers consider alternatives to the 2021 GMC Sierra?
Alternatives listed in this guide: 2021 Ford F-150 and 2021 Ram 1500.