Used 2021 Mercedes-Benz GLB for Sale near Boca Raton, FL

## Summary - With 1,067 currently listed for sale on CarGurus and an **average price of $24,360.00**, 35.5% of 2021 Mercedes-Benz GLBs for sale on CarGurus are rated as good or great deals. - **Favorably reviewed:** Owners rated the 2021 Mercedes-Benz GLB 4.83 / 5 stars and CarGurus experts gave it an 8 / 10. - **85.8% of 2021 GLB models on CarGurus are accident free**. - The 2021 Mercedes-Benz GLB-Class makes its mark by offering an optional ($850) third row of seating, bringing its passenger capacity from five to seven. ## Why it stands out The 2021 Mercedes-Benz GLB stands out in a crowded compact luxury SUV market due to its combination of versatility and upscale features. This model year introduces a flexible interior layout that includes an optional third row for additional seating capacity, catering to families who require more space for passengers. Additionally, the GLB features a modern and stylish cabin with high-quality materials and user-friendly technology, such as the latest version of the MBUX infotainment system, which includes voice activation for added convenience. While it delivers respectable performance with a turbocharged engine and optional all-wheel drive, potential buyers should be mindful of the somewhat cramped third row and the varying comfort levels in the seating. Overall, the 2021 GLB represents an appealing entry into the luxury SUV segment for those seeking both practicality and brand prestige. ## Other model years to consider - **[2024 Mercedes-Benz GLB](https://www.cargurus.com/Cars/l-Used-2024-Mercedes-Benz-GLB-c32831)** - Average price: $36,303.00 - Good/great deal percentage: 35.6% - User rating: 5 / 5 - Total listings: 1,305 - **[2022 Mercedes-Benz GLB](https://www.cargurus.com/Cars/l-Used-2022-Mercedes-Benz-GLB-c31985)** - Average price: $27,757.00 - Good/great deal percentage: 34.2% - User rating: 4.75 / 5 - Total listings: 1,196 - **[2023 Mercedes-Benz GLB](https://www.cargurus.com/Cars/l-Used-2023-Mercedes-Benz-GLB-c32605)** - Average price: $30,627.00 - Good/great deal percentage: 31.3% - User rating: 5 / 5 - Total listings: 1,012 This analysis is based on CarGurus' proprietary market data from February 23, 2026, CarGurus experts' opinions, and generative AI.