Used 2018 GMC Terrain for Sale near Decatur, AL

## Summary - With 1,808 currently listed for sale on CarGurus and an **average price of $14,522.00**, 32.0% of 2018 GMC Terrains for sale on CarGurus are rated as good or great deals. - **Favorably reviewed:** Owners rated the 2018 GMC Terrain 4.54 / 5 stars. - **61.7% of 2018 Terrain models on CarGurus are accident free**. - The 2018 GMC Terrain features a comfortable interior, improved technology, and a choice of three engines, with notable performance from the turbocharged 2.0-liter engine. ## Why it stands out The 2018 GMC Terrain presents a significant redesign from its predecessor, aiming to attract buyers with its comfortable and spacious interior, as well as a modern lineup of features. Owners have praised the vehicle for its overall comfort and smooth drive, particularly when equipped with the more powerful 2.0-liter turbocharged engine, which provides an engaging performance compared to the base 1.5-liter engine that some found lacking. However, the move towards a more subdued aesthetic has received mixed reviews, with some fans of the previous bold design feeling disappointed with the Terrain's new, softer appearance. Despite its strengths in comfort and available technology—including Apple CarPlay and Android Auto—the Terrain has received some criticism regarding its value proposition, particularly in comparison to competitors like the Honda CR-V. The lackluster safety ratings have raised concerns among potential buyers, especially those with families. Overall, while the 2018 GMC Terrain offers several appealing features, its value and safety ratings may make it less attractive compared to rivals in the compact SUV segment. ## 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 - **[2021 GMC Terrain](https://www.cargurus.com/Cars/l-Used-2021-GMC-Terrain-c30365)** - Average price: $18,639.00 - Good/great deal percentage: 32.4% - User rating: 5 / 5 - Total listings: 2,508 This analysis is based on CarGurus' proprietary market data from March 9, 2026, CarGurus experts' opinions, and generative AI.