2021 GMC Terrain Report
Known issues, recalls, running costs, and what to check before you buy.
Overall Score
Key Takeaways
- The powertrain and electrical system are the most frequently cited areas of concern, with multiple owners reporting issues.
- Inspect the service brakes and engine thoroughly, as these systems also show a notable number of complaints.
- While safety ratings are high, a single report of non-deploying airbags in a severe accident is a critical red flag.
- Fuel economy is respectable, rated at 26 MPG combined, which helps mitigate high fuel costs.
2021 GMC Terrain
The 2021 GMC Terrain offers a comfortable ride and decent fuel economy for its class, but used buyers should be aware of its reliability record. While it boasts a 5-star overall safety rating from NHTSA, the complaint data reveals recurring issues. The most frequent problems reported involve the powertrain and electrical system, with service brakes and engine also appearing. These issues, some reported at low mileage, suggest potential durability concerns that warrant careful inspection.
Critical Failure Risk
Owners report shuddering or hesitation during acceleration, particularly at lower mileage. This can be indicative of transmission or engine control issues.
Early detection can help you avoid a $500-$2,000 repair.
Safety & Bulletins
Owner Complaints
Performance & Efficiency
Reliability
Practicality
The score is dragged down by its weaker day-to-day practicality signals.
Who This Car Is For
Best for
Drivers seeking a comfortable and practical compact SUV with good fuel efficiency.
+2 more buyer-fit notes in the full report
Avoid if
Buyers prioritizing long-term mechanical dependability above all else.
+2 more buyer-fit warnings in the full report
2021 GMC Terrain Reliability Analysis
Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2021 GMC Terrain.
Vehicle Specs
- Fuel Type
- Regular
- Seating Capacity
- 5
- Transmission
- Automatic
- Drivetrain
- All-Wheel Drive
- Body Style
- Suv
- EPA Combined MPG
- 26
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Most Common Issues
1. Powertrain
Most reportedUsage: 7 reports
2. Electrical System
Usage: 7 reports
First Service Interval
- Oil Change and Filter Replacement (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Multi-Point Inspection
Est. shop cost: $100 - $200
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FAQ
Is the 2021 GMC Terrain reliable?
The CarFocal Reliability Score for the 2021 GMC Terrain is 8.8/10. Reliability score is 8.8/10. NHTSA recalls: 3. Owner complaints: 42.
How practical is the 2021 GMC Terrain for daily use?
Practicality score is 4.7/10. The score is dragged down by its weaker day-to-day practicality signals. EPA combined economy is 26 MPG. Seating capacity is 5.
What is the overall score for the 2021 GMC Terrain?
The CarFocal Overall Score for the 2021 GMC Terrain is 7.9/10. Overall score is 7.9/10 (Good). Confidence 85%. Maintenance 8.3/10. Practicality 4.7/10.
What does it cost to own and maintain a 2021 GMC Terrain?
Based on Carfocal's data, First listed service: - Oil Change and Filter Replacement (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Multi-Point Inspection at 7,500 miles. Estimated first-year maintenance: $400 - $700. Repair prediction highlight: Transmission (typical at 80,000 miles, estimated cost Min: $1,500 • Max: $3,000).
What engine is in the 2021 GMC Terrain?
Engine specs list 4 • 1.5.
What transmission does the 2021 GMC Terrain use?
According to CarFocal's specs for the 2021 GMC Terrain, transmission is Automatic. The paired drivetrain is All-Wheel Drive.
What is the combined EPA MPG for the 2021 GMC Terrain?
EPA combined estimate is 26 MPG.
What driver assistance and safety features are available on the 2021 GMC Terrain?
11 standard and 4 optional driver assistance features. Key features include Anti-lock Braking System, Electronic Stability Control, Traction Control.
How many people fit in a 2021 GMC Terrain?
According to CarFocal's specs for the 2021 GMC Terrain, seating capacity is 5.
What body style is the 2021 GMC Terrain?
According to CarFocal's specs for the 2021 GMC Terrain, body style is suv.
What drivetrain does the 2021 GMC Terrain use?
According to CarFocal's specs for the 2021 GMC Terrain, drivetrain is All-Wheel Drive. Transmission is Automatic.
What are the NHTSA safety ratings for the 2021 GMC Terrain?
NHTSA ratings: Overall 5/5 • Frontal 5/5 • Side 5/5 • Rollover 4/5.
What are the most common power train problems on the 2021 GMC Terrain?
Top complaint category: power train (7 reports, 16.7% of complaints).
Are there open safety recalls on the 2021 GMC Terrain?
This model year has 3 official safety campaigns listed.
Should buyers consider alternatives to the 2021 GMC Terrain?
Alternatives listed in this guide: 2021 Honda CR-V and 2021 Toyota RAV4.