Used 2021 Mercedes-Benz GLS for Sale near California

## Summary - With 873 currently listed for sale and an **average price of $52,370.00**, 32.2% 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. - **81.9% of 2021 GLS models on CarGurus are accident-free**. - The 2021 Mercedes-Benz GLS offers a luxurious interior with spacious seating for up to seven, advanced technology features including the new MBUX infotainment system, and impressive performance across multiple powertrain options. ## Why it stands out The 2021 Mercedes-Benz GLS redefines the luxury SUV experience with its combination of performance, comfort, and cutting-edge technology. Built to impress, the GLS draws a connection to the prestigious S-Class sedan while offering a family-friendly design with three rows of spacious seating. It boasts strong performance options, including a twin-turbocharged inline-six engine in the GLS 450 and a more powerful V8 in the GLS 580. Each model is equipped with Mercedes' EQ Boost 48-volt mild-hybrid system, enhancing efficiency and performance. The interior is adorned with premium materials, a massive digital screen, and the innovative MBUX infotainment system that offers intuitive controls. Despite its size, the GLS maneuvers easily, providing a comfortable ride without compromising on luxury. However, the third row may feel cramped for taller passengers, and the technology can take some time to master. Overall, the 2021 GLS delivers a balanced package that caters to discerning buyers seeking both style and substance. ## Other model years to consider - **[2024 Mercedes-Benz GLS](https://www.cargurus.com/Cars/l-Used-2024-Mercedes-Benz-GLS-c32834)** - Average price: $78,397.00 - Good/great deal percentage: 35.7% - User rating: 5 / 5 - Total listings: 1,327 - **[2025 Mercedes-Benz GLS](https://www.cargurus.com/Cars/l-Used-2025-Mercedes-Benz-GLS-c33471)** - Average price: $86,325.00 - Good/great deal percentage: 35.4% - Total listings: 1,210 - **[2022 Mercedes-Benz GLS](https://www.cargurus.com/Cars/l-Used-2022-Mercedes-Benz-GLS-c31986)** - Average price: $50,802.00 - Good/great deal percentage: 34.5% - User rating: 5 / 5 - Total listings: 1,006 This analysis is based on CarGurus' proprietary market data from March 23, 2026, CarGurus experts' opinions, and generative AI.