Used 2018 Mercedes-Benz GLS for Sale near Alabama

## Summary - With 941 currently listed for sale and an **average price of $22,714.00**, 33.0% of 2018 Mercedes-Benz GLS models for sale on CarGurus are rated as good or great deals. - **Owners rated the 2018 Mercedes-Benz GLS 3.81 / 5 stars** on average. - **66.0% of 2018 GLS models on CarGurus are accident-free**. - The 2018 Mercedes-Benz GLS stands out with its spacious three-row seating, luxurious features, and strong performance, making it a well-rounded choice for families seeking a blend of comfort and capability. ## Why it stands out The 2018 Mercedes-Benz GLS distinguishes itself as the roomiest offering in the Mercedes-Benz lineup, providing ample space for six or seven passengers across its three rows of seating. Its interior comfortably mirrors the luxury of the S-Class sedan, with high-quality materials and advanced electronic features that enhance the driving experience. This SUV also possesses a measure of off-road capability, linking it to the rugged G-Class in spirit. However, potential buyers should note that while the GLS provides a great overall package, users have pointed out that some interior spaces may not meet expectations for roominess. Nevertheless, strong power delivery and superior comfort make the GLS a compelling choice for those in the market for a premium midsize SUV. ## Other model years to consider - **[2024 Mercedes-Benz GLS](https://www.cargurus.com/Cars/l-Used-2024-Mercedes-Benz-GLS-c32834)** - Average price: $78,479.00 - Good/great deal percentage: 35.4% - User rating: 5 / 5 - Total listings: 1,332 - **[2021 Mercedes-Benz GLS](https://www.cargurus.com/Cars/l-Used-2021-Mercedes-Benz-GLS-c29893)** - Average price: $52,781.00 - Good/great deal percentage: 34.7% - User rating: 4.93 / 5 - Total listings: 882 - **[2025 Mercedes-Benz GLS](https://www.cargurus.com/Cars/l-Used-2025-Mercedes-Benz-GLS-c33471)** - Average price: $86,530.00 - Good/great deal percentage: 35.3% - Total listings: 1,222 This analysis is based on CarGurus' proprietary market data from March 20, 2026, CarGurus experts' opinions, and generative AI.