Used 2021 Mercedes-Benz GLS for Sale near Boston, MA
165 results
CarGurus Analysis:
2021 Mercedes-Benz GLS
With 160 currently listed for sale near Boston, MA and an average price of $48,165.00, 35.0% of 2021 Mercedes-Benz GLS vehicles for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2021 Mercedes-Benz GLS 4.93 / 5 stars.
91.3% of 2021 GLS models on CarGurus are accident free.
The 2021 Mercedes-Benz GLS-Class raises the bar for luxury in full-size SUVs, boasting spacious three-row seating, advanced technology like the MBUX infotainment system, and impressive performance options.
CarGurus Analysis: 2021 Mercedes-Benz GLS
overall
Summary
With 160 currently listed for sale near Boston, MA and an average price of $48,165.00, 35.0% of 2021 Mercedes-Benz GLS vehicles for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2021 Mercedes-Benz GLS 4.93 / 5 stars.
91.3% of 2021 GLS models on CarGurus are accident free.
The 2021 Mercedes-Benz GLS-Class raises the bar for luxury in full-size SUVs, boasting spacious three-row seating, advanced technology like the MBUX infotainment system, and impressive performance options.
Why it stands out
The 2021 Mercedes-Benz GLS-Class establishes itself as a leading contender in the luxury SUV segment, drawing comparisons to its sedan sibling, the S-Class. With abundant space across three rows, it excels in comfort without sacrificing performance. The GLS is available with multiple powertrains, ranging from a turbocharged inline-six to a robust V8, ensuring versatile performance for various driving preferences. Its cutting-edge MBUX infotainment system integrates seamlessly with numerous tech features, allowing for a luxurious driving experience. Despite a cramped third row and occasionally unintuitive technology, the GLS's superior fit and finish, ample cargo space, and striking design make it an appealing choice for affluent families seeking a balance of luxury and usability.
Other model years to consider
- Average price: $73,484.00
- Good/great deal percentage: 27.1%
- User rating: 5 / 5
- Total listings: 188
- Average price: $51,416.00
- Good/great deal percentage: 36.9%
- User rating: 5 / 5
- Total listings: 195
- Average price: $56,462.00
- Good/great deal percentage: 35.7%
- User rating: 4 / 5
- Total listings: 210
This analysis is based on CarGurus' proprietary market data from April 7, 2026, CarGurus experts' opinions, and generative AI.
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Discover the ultimate buying guide for purchasing a used Mercedes-Benz GLS covering each generation since 2017. Whether you're a first-time buyer or a Mercedes enthusiast, this comprehensive overview will help you research your next pre-owned Mercedes-Benz GLS.
4.7 Overall rating
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Wilber R
Reviewed a 2021 Mercedes-Benz GLS on Sep 4, 2024
Excellent car, very good finish full of attributes, spacious.
James C
Reviewed a 2021 Mercedes-Benz GLS on Dec 22, 2022
I feel that the features listed for this vehicle is good. I just didnt see one option that would have made me buy the vehicle fast. I did not see the multi contour massage feature. I wished that it would have been made clear on the listing.
Michelle A
Reviewed a 2021 Mercedes-Benz 450 4MATIC on Apr 8, 2023
Very nice ride, drives so well and well built. I love it so far!!
2021 Mercedes-Benz GLS Trims
| Trim type | MSRP |
|---|---|
| 450 4MATIC | $76,000 |
| AMG GLS 63 4MATIC AWD | $132,100 |
| 580 4MATIC | $98,850 |
| 600 Mercedes-Maybach 4MATIC | $160,500 |
2021 Mercedes-Benz GLS Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2021 Mercedes-Benz GLS prices has changed over time.
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