Used 2021 GMC Terrain for Sale near Decatur, AL

## Summary - With 2,508 currently listed for sale on CarGurus and an **average price of $18,639.00**, 32.4% of 2021 GMC Terrains for sale on CarGurus are rated as good or great deals. - **Favorably reviewed:** Owners rated the 2021 GMC Terrain 5 / 5 stars. - **76.2% of 2021 Terrain models on CarGurus are accident free**. - The 2021 GMC Terrain is celebrated for its stylish interior, smooth ride, and fuel efficiency, making it a great value for buyers. ## Why it stands out The 2021 GMC Terrain stands out in the competitive compact SUV market for several reasons. Its stylish and angular design sets it apart from rivals, presenting an adventurous appearance suited for both urban and off-road journeys. Owners have consistently praised its comfortable and roomy interior, enhancing the overall driving experience. Additionally, the Terrain offers good fuel economy, making it appealing for daily commutes and longer trips alike. Although some users noted minor omissions such as the absence of a standard auto-wiper feature and opportunities for better blind-spot protection, the vehicle's strong performance in areas like safety and reliability significantly enhances its attractiveness to potential buyers. ## Other model years to consider - **[2023 GMC Terrain](https://www.cargurus.com/Cars/l-Used-2023-GMC-Terrain-c32471)** - Average price: $23,631.00 - Good/great deal percentage: 29.0% - User rating: 5 / 5 - Total listings: 4,973 - **[2024 GMC Terrain](https://www.cargurus.com/Cars/l-Used-2024-GMC-Terrain-c33045)** - Average price: $23,581.00 - Good/great deal percentage: 29.6% - User rating: 5 / 5 - Total listings: 4,206 - **[2022 GMC Terrain](https://www.cargurus.com/Cars/l-Used-2022-GMC-Terrain-c31576)** - Average price: $22,320.00 - Good/great deal percentage: 30.0% - User rating: 4.58 / 5 - Total listings: 3,054 This analysis is based on CarGurus' proprietary market data from March 9, 2026, CarGurus experts' opinions, and generative AI.