Used 2021 Mercedes-Benz GLS for Sale near Springfield, MA

## Summary - With 897 currently listed for sale on CarGurus and an **average price of $53,885.00**, 36.8% of 2021 Mercedes-Benz GLS models for sale on CarGurus are rated as good or great deals. - **Favorably reviewed:** Owners rated the 2021 Mercedes-Benz GLS 4.93 / 5 stars. - **82.7% of 2021 GLS models on CarGurus are accident free**. - The 2021 Mercedes-Benz GLS-Class is known for its exceptional luxury, spacious seating across three rows, and competitive performance. ## Why it stands out The 2021 Mercedes-Benz GLS introduces an impressive blend of luxury and capability, establishing itself as a top choice in the full-size SUV category. This model year features a plush interior that allows for spacious seating for up to seven passengers, making it ideal for families or those needing additional room. It is equipped with high-end technology, including the MBUX infotainment system, which offers both touch and voice control functionalities. Performance-wise, the GLS offers strong powertrains, including a twin-turbocharged inline-six and V8 options, providing both thrilling acceleration and a smooth ride. Although the GLS boasts numerous highlights, it does face criticism for a cramped third-row seat and less-than-ideal fuel economy, which are important considerations for potential buyers. ## Other model years to consider - **[2024 Mercedes-Benz GLS](https://www.cargurus.com/Cars/l-Used-2024-Mercedes-Benz-GLS-c32834)** - Average price: $78,977.00 - Good/great deal percentage: 33.9% - User rating: 5 / 5 - Total listings: 1,268 - **[2022 Mercedes-Benz GLS](https://www.cargurus.com/Cars/l-Used-2022-Mercedes-Benz-GLS-c31986)** - Average price: $50,736.00 - Good/great deal percentage: 36.3% - User rating: 5 / 5 - Total listings: 1,009 - **[2023 Mercedes-Benz GLS](https://www.cargurus.com/Cars/l-Used-2023-Mercedes-Benz-GLS-c32328)** - Average price: $70,037.00 - Good/great deal percentage: 35.7% - User rating: 4 / 5 - Total listings: 1,192 This analysis is based on CarGurus' proprietary market data from February 20, 2026, CarGurus experts' opinions, and generative AI.