Last updated: 2026-04-20
Most Reliable GMC Models — Ranked in 2026
We ranked every GMC model and year in our database by reliability score. The average GMC scores 69/100 across all models and years. The 2025 GMC Sierra 1500 is the most reliable GMC with a score of 80/100.
GMC Reliability Rankings
| # | Vehicle | Best Year | Score | Rating | Recalls | Complaints / 10k | Maint. Rating | Est. Repair Cost |
|---|---|---|---|---|---|---|---|---|
| 1 | 2025 GMC Sierra 1500 | 2025 | 80/100 | Excellent | 1 | 2.0 | 3.5 | |
| 2 | 2024 GMC Canyon | 2024 | 79/100 | Good | 3 | 1.0 | 3 | $548/yr |
| 3 | 2025 GMC Terrain | 2025 | 78/100 | Good | 0 | 1.1 | 3.5 | $558/yr |
| 4 | 2024 GMC Terrain | 2024 | 77/100 | Good | 1 | 3.5 | 3.5 | $558/yr |
| 5 | 2024 GMC Acadia | 2024 | 76/100 | Good | 0 | — | 3 | $734/yr |
| 6 | 2020 GMC Canyon | 2020 | 76/100 | Good | 0 | — | 3 | $548/yr |
| 7 | 2019 GMC Canyon | 2019 | 76/100 | Good | 0 | — | 3 | $548/yr |
| 8 | 2025 GMC Yukon | 2025 | 76/100 | Good | 1 | 5.6 | 3.5 | $747/yr |
| 9 | 2025 GMC Acadia | 2025 | 76/100 | Good | 0 | — | 3 | $734/yr |
| 10 | 2023 GMC Terrain | 2023 | 75/100 | Good | 2 | 2.9 | 3.5 | $558/yr |
| 11 | 2021 GMC Terrain | 2021 | 74/100 | Good | 2 | 5.9 | 3.5 | $558/yr |
| 12 | 2024 GMC Sierra 1500 | 2024 | 73/100 | Good | 1 | 10.1 | 3.5 | |
| 13 | 2025 GMC Canyon | 2025 | 72/100 | Good | 2 | 0.0 | 3 | $548/yr |
| 14 | 2022 GMC Terrain | 2022 | 72/100 | Good | 4 | 7.5 | 3.5 | $558/yr |
| 15 | 2018 GMC Canyon | 2018 | 71/100 | Good | 1 | — | 3 | $548/yr |
| 16 | 2022 GMC Canyon | 2022 | 71/100 | Good | 1 | — | 3 | $548/yr |
| 17 | 2020 GMC Yukon | 2020 | 71/100 | Good | 5 | 9.3 | 3.5 | $747/yr |
| 18 | 2019 GMC Yukon | 2019 | 71/100 | Good | 2 | 12.7 | 3.5 | $747/yr |
| 19 | 2023 GMC Sierra 1500 | 2023 | 69/100 | Good | 3 | 13.4 | 3.5 | |
| 20 | 2018 GMC Acadia | 2018 | 68/100 | Good | 2 | — | 3 | $734/yr |
| 21 | 2021 GMC Acadia | 2021 | 68/100 | Good | 2 | — | 3 | $734/yr |
| 22 | 2021 GMC Canyon | 2021 | 68/100 | Good | 2 | — | 3 | $548/yr |
| 23 | 2024 GMC Yukon | 2024 | 68/100 | Good | 2 | 5.1 | 3.5 | $747/yr |
| 24 | 2018 GMC Yukon | 2018 | 68/100 | Good | 4 | 14.5 | 3.5 | $747/yr |
| 25 | 2020 GMC Terrain | 2020 | 68/100 | Good | 2 | 18.6 | 3.5 | $558/yr |
| 26 | 2019 GMC Terrain | 2019 | 68/100 | Good | 3 | 16.1 | 3.5 | $558/yr |
| 27 | 2018 GMC Sierra 1500 | 2018 | 66/100 | Good | 5 | 16.0 | 3.5 | |
| 28 | 2022 GMC Acadia | 2022 | 66/100 | Good | 3 | — | 3 | $734/yr |
| 29 | 2023 GMC Canyon | 2023 | 66/100 | Good | 3 | — | 3 | $548/yr |
| 30 | 2018 GMC Terrain | 2018 | 66/100 | Good | 5 | 17.6 | 3.5 | $558/yr |
| 31 | 2022 GMC Sierra 1500 | 2022 | 65/100 | Good | 5 | 22.7 | 3.5 | |
| 32 | 2023 GMC Acadia | 2023 | 64/100 | Good | 4 | — | 3 | $734/yr |
| 33 | 2021 GMC Sierra 1500 | 2021 | 63/100 | Good | 6 | 21.1 | 3.5 | |
| 34 | 2020 GMC Sierra 1500 | 2020 | 63/100 | Good | 11 | 18.2 | 3.5 | |
| 35 | 2022 GMC Yukon | 2022 | 62/100 | Good | 9 | 30.1 | 3.5 | $747/yr |
| 36 | 2020 GMC Acadia | 2020 | 62/100 | Good | 6 | — | 3 | $734/yr |
| 37 | 2023 GMC Yukon | 2023 | 61/100 | Good | 8 | 40.0 | 3.5 | $747/yr |
| 38 | 2019 GMC Sierra 1500 | 2019 | 60/100 | Good | 10 | 28.1 | 3.5 | |
| 39 | 2021 GMC Yukon | 2021 | 55/100 | Mixed | 25 | 48.7 | 3.5 | $747/yr |
Model Summaries
GMC Acadia
The GMC Acadia, covering model years 2018 to 2026, holds an average reliability score of 70/100, indicating good reliability with some notable issues in specific areas. Common problems reported by owners include power train and electrical system issues, particularly in earlier models, with repair costs averaging $734 annually, which is higher than the midsize SUV average of $573. The 2026 model year shows improvement with no recalls or complaints, making it potentially better suited for those seeking a midsize SUV with fewer reported issues.
Average score: 69/100. Best year: 2024 (76/100). 8 years tracked.
GMC Canyon
The GMC Canyon, spanning model years 2018 to 2026, holds an average reliability score of 83 out of 100, indicating excellent reliability. Common issues reported by owners include powertrain and electrical system problems, particularly in earlier model years like 2018 and 2019, with repair costs averaging $548 annually, aligning with the midsize truck category. The data suggests that while recent models, especially 2026, show improved reliability and fewer complaints, potential buyers should remain aware of historical issues, especially with transmissions and electrical systems, when considering used models.
Average score: 72/100. Best year: 2024 (79/100). 9 years tracked.
GMC Sierra 1500
The GMC Sierra 1500, covering model years 2018 through 2026, holds an average reliability score of 83/100, indicating an overall excellent reliability reputation. Data shows that while earlier models like 2019 and 2020 faced issues primarily with engines and power trains, leading to higher complaint rates and recalls, more recent models such as 2025 and 2026 exhibit significant improvements with minimal complaints and no recalls. This vehicle is best suited for buyers prioritizing reliability, particularly those considering newer models, as they demonstrate fewer reported issues and higher satisfaction scores.
Average score: 67/100. Best year: 2025 (80/100). 9 years tracked.
GMC Terrain
The GMC Terrain, covering model years 2018 to 2026, has an average reliability score of 76/100, categorized as good. Commonly reported issues include power train and electrical system malfunctions, with varying severity across different model years. Owners should consider the medium reliability rating of 3.5/5 and an estimated annual repair cost of $558, which is slightly above the compact SUV average, when evaluating this vehicle for purchase.
Average score: 72/100. Best year: 2025 (78/100). 9 years tracked.
GMC Yukon
The GMC Yukon, covering model years 2018 to 2026, shows a reliability score averaging 72 out of 100, categorized as good, with repair costs slightly below the full-size SUV average at $747 annually. Data indicates common issues with the engine and powertrain, particularly in models from 2021 to 2023, where engine failures and transmission problems are frequently reported, leading to higher complaint rates for those years. While recent models like 2024 and 2025 show improvement with fewer complaints, potential buyers should consider these patterns and the associated safety implications, especially when evaluating used models.
Average score: 67/100. Best year: 2025 (76/100). 9 years tracked.
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Frequently Asked Questions
- What is the most reliable GMC?
- Based on our data, the 2025 GMC Sierra 1500 is the most reliable GMC with a score of 80/100 ("Excellent"). It has 1 recalls and 56 owner complaints.
- Are GMC vehicles reliable?
- GMC vehicles have an average reliability score of 69/100 across all models and years in our database. Individual models vary, so checking the specific model year you're considering is important.
- Which GMC models should I avoid?
- Based on our data, these GMC model-years are statistical outliers within their lines: 2023 Canyon (66/100), 2018 Terrain (66/100), 2020 Acadia (62/100), 2019 Sierra 1500 (60/100), 2021 Yukon (55/100). These have higher recall counts and complaint volumes relative to their siblings.
- How do GMC repair costs compare?
- Repair costs vary by model. Check the detailed rankings table above for estimated annual repair costs for each GMC model year.
How We Calculate Reliability Scores
Auto Reliability Index scores are calculated on a 0–100 scale using a weighted formula that combines multiple public data sources. Each factor is weighted based on its predictive value for real-world ownership experience.
Key Ranking Factors
Complaint Severity
NHTSA owner complaints weighted by component category (e.g., powertrain, safety systems, electronics, cosmetic) — safety-critical issues carry more weight than cosmetic ones. Adjusted for sales volume so high-volume models aren't unfairly penalized.
Repair Costs
Independent reliability ratings based on repair frequency, average repair costs, and severity of typical repairs for each model.
Recall Impact
Number of NHTSA recalls weighted by severity. “Stop driving” and fire-risk recalls are penalized more heavily than minor software or labeling recalls.
Issue Diversity
Measures how many major vehicle systems (engine, transmission, electrical, braking, etc.) have recorded complaints. A vehicle with issues spread across many systems may indicate systemic quality issues.
Scores are grouped into four tiers:
- 80–100: Excellent— Top-tier reliability, minimal issues
- 60–79: Good— Reliable with some minor concerns
- 40–59: Mixed— Notable issues, research before buying
- 0–39: Risky— Significant problems, proceed with caution
Data is sourced from NHTSA recall records, owner complaint filings, and independent repair databases. Scores are recalculated as new data becomes available. While the weighting model is proprietary, all underlying data sources are public and traceable.
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