Used 2021 Mercedes-Benz GLB for Sale near Raleigh, NC

## Summary - With 1,029 currently listed for sale on CarGurus and an **average price of $24,483.00**, 35.3% 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. - **84.9% of 2021 GLB models on CarGurus are accident free**. - The 2021 Mercedes-Benz GLB-Class makes its mark with an optional third row of seating, bringing its passenger capacity from five to seven, making it a versatile choice in the luxury SUV market. ## Why it stands out The 2021 Mercedes-Benz GLB-Class distinguishes itself within its segment by offering a flexible interior layout, including an optional ($850) third-row seat that expands passenger capacity. Its stylish design, with athletic proportions and notable ground clearance, aligns with the premium aesthetics typical of the Mercedes-Benz brand. Inside, the GLB boasts a high-quality cabin featuring modern finishes, an elegant dual-screen setup for infotainment, and a variety of advanced technology options, including the MBUX infotainment system with voice controls. Performance-wise, the GLB is equipped with a capable turbocharged 2.0-liter inline four-cylinder engine, delivering 221 horsepower and impressive fuel economy ratings of 23 mpg city and 30 mpg highway. However, while it excels in many areas, the third-row seating may feel cramped, reflecting the vehicle's compact nature. Overall, it provides an appealing choice for buyers looking to invest in a premium compact SUV that doesn’t compromise on features or comfort. ## Other model years to consider - **[2022 Mercedes-Benz GLB](https://www.cargurus.com/Cars/l-Used-2022-Mercedes-Benz-GLB-c31985)** - Average price: $28,137.00 - Good/great deal percentage: 33.9% - User rating: 4.75 / 5 - Total listings: 1,156 - **[2020 Mercedes-Benz GLB](https://www.cargurus.com/Cars/l-Used-2020-Mercedes-Benz-GLB-c29345)** - Average price: $20,896.00 - Good/great deal percentage: 36.3% - User rating: 4.06 / 5 - Total listings: 579 This analysis is based on CarGurus' proprietary market data from March 9, 2026, CarGurus experts' opinions, and generative AI.