Used 2021 Mercedes-Benz GLB for Sale near Seattle, WA
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CarGurus Analysis:
2021 Mercedes-Benz GLB
With 63 currently listed for sale near Seattle, WA and an average price of $27,906.00, 71.4% 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.
Accident-free percentage: 211.1% of 2021 GLB models on CarGurus are accident free.
The 2021 Mercedes-Benz GLB offers a versatile interior layout with an optional third row, enhancing its passenger capacity and making it a compelling choice in the luxury SUV segment.
CarGurus Analysis: 2021 Mercedes-Benz GLB
overall

Summary
With 63 currently listed for sale near Seattle, WA and an average price of $27,906.00, 71.4% 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.
Accident-free percentage: 211.1% of 2021 GLB models on CarGurus are accident free.
The 2021 Mercedes-Benz GLB offers a versatile interior layout with an optional third row, enhancing its passenger capacity and making it a compelling choice in the luxury SUV segment.
Why it stands out
The 2021 Mercedes-Benz GLB-Class impresses with its blend of luxury, practicality, and advanced technology. Designed to cater to families, the GLB features an optional third row, increasing its seating capacity from five to seven, which is a rarity in its class. This thoughtful design is complemented by a well-crafted interior that reflects Mercedes-Benz's attention to detail. While some competitors may offer similar features, the GLB distinguishes itself with a turbocharged engine that balances performance with fuel efficiency, achieving up to 30 mpg on the highway. Additionally, the GLB is equipped with a wealth of technology, including the intuitive MBUX infotainment system, ensuring drivers and passengers enjoy modern conveniences. Although the third row may feel cramped for taller passengers, the GLB remains a robust choice for those prioritizing a versatile and premium driving experience.
Other model years to consider
- 2022 Mercedes-Benz GLB
- Average price: $28,773.00
- Good/great deal percentage: 84.3%
- User rating: 4.75 / 5
- Total listings: 70
This analysis is based on CarGurus' proprietary market data from April 7, 2026, CarGurus experts' opinions, and generative AI.
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Lauren W
Reviewed a 2021 Mercedes-Benz 250 4MATIC on Jul 24, 2024
Amazing suv for people who want a small SUV. Size of a Nissan Rouge, but with the features and luxury options of a Mercedes.
2021 Mercedes-Benz GLB Trims
| Trim type | MSRP |
|---|---|
| 250 4MATIC | $40,050 |
| AMG 35 4MATIC | $49,500 |
| 250 FWD | $38,050 |
2021 Mercedes-Benz GLB Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2021 Mercedes-Benz GLB prices has changed over time.
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