Used 2021 Mercedes-Benz GLS for Sale near Seattle, WA
101 results
CarGurus Analysis:
2021 Mercedes-Benz GLS
With 98 currently listed for sale near Seattle, WA and an average price of $65,985.00, 18.4% of 2021 Mercedes-Benz GLS for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2021 Mercedes-Benz GLS 4.93 / 5 stars.
105.1% of 2021 GLS models on CarGurus are accident free.
The 2021 Mercedes-Benz GLS offers a luxurious interior, advanced technology, and multiple powertrain options, making it a standout in the full-size SUV market.
CarGurus Analysis: 2021 Mercedes-Benz GLS
overall
Summary
With 98 currently listed for sale near Seattle, WA and an average price of $65,985.00, 18.4% of 2021 Mercedes-Benz GLS for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2021 Mercedes-Benz GLS 4.93 / 5 stars.
105.1% of 2021 GLS models on CarGurus are accident free.
The 2021 Mercedes-Benz GLS offers a luxurious interior, advanced technology, and multiple powertrain options, making it a standout in the full-size SUV market.
Why it stands out
The 2021 Mercedes-Benz GLS excels by combining luxury and performance, setting a high bar for full-size SUVs. With its connection to the S-Class, it embodies high-end comfort and advanced technology. The GLS offers an impressive range of features such as spacious three-row seating, ensuring both passenger comfort and versatile cargo capacity. Equipped with a twin-turbocharged engine and numerous tech innovations, it stands out with its meticulously designed interior that houses an impressive digital display and the MBUX infotainment system. While it leads in many areas, potential buyers should note that the third row can feel cramped compared to others in its class, and the technology may pose a learning curve. Overall, the GLS blends opulence with robust capabilities, appealing to those looking for a luxury SUV experience.
Other model years to consider
- Average price: $71,102.00
- Good/great deal percentage: 19.7%
- User rating: 5 / 5
- Total listings: 137
- Average price: $52,993.00
- Good/great deal percentage: 21.3%
- User rating: 5 / 5
- Total listings: 127
- Average price: $91,926.00
- Good/great deal percentage: 16.5%
- Total listings: 121
This analysis is based on CarGurus' proprietary market data from April 7, 2026, CarGurus experts' opinions, and generative AI.
Relevant articles
The Best New Cars for Old Money Style in 2026
Whether you’re looking for something classic and timeless or you just want a nice vehicle that doesn’t project extreme affluence, there are a lot of new vehicles on the market today that feel luxurious, look elegant, yet don’t attract much attention.
The Best Large SUVs for Gas Mileage in 2026
Large SUVs and great gas mileage don't tend to go hand-in-hand. That said, some models are more impressive than others. Here are our favourites, including the BMW X7 and Chevrolet Tahoe.
Mercedes-Benz GLS Buying Guide: Cost, Reliability, and the Best Years to Buy
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
Filter by rating
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.
See more price trends
