Used 2018 Mercedes-Benz GLS for Sale near Seattle, WA
110 results
![[040] Black 2019 Mercedes-Benz GLS 450 4MATIC SUV / Crossover All-Wheel Drive Automatic](https://static.cargurus.com/images/forsale/2026/03/28/10/53/2019_mercedes-benz_gls-pic-3850122106451332257-1024x768.jpeg?io=true&width=640&height=480&fit=bounds&format=jpg&auto=webp)
CarGurus Analysis:
2018 Mercedes-Benz GLS
With 100 currently listed for sale near Seattle, WA and an average price of $31,254.00, 10.0% of 2018 Mercedes-Benz GLS models for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2018 Mercedes-Benz GLS 3.81 / 5 stars.
69.0% of 2018 GLS models on CarGurus are accident free.
The 2018 Mercedes-Benz GLS offers three rows of seating, luxurious features, and ample cargo space, making it suitable for families.
CarGurus Analysis: 2018 Mercedes-Benz GLS
Summary
With 100 currently listed for sale near Seattle, WA and an average price of $31,254.00, 10.0% of 2018 Mercedes-Benz GLS models for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2018 Mercedes-Benz GLS 3.81 / 5 stars.
69.0% of 2018 GLS models on CarGurus are accident free.
The 2018 Mercedes-Benz GLS offers three rows of seating, luxurious features, and ample cargo space, making it suitable for families.
Why it stands out
The 2018 Mercedes-Benz GLS shines as the roomiest vehicle in the Mercedes-Benz lineup, effortlessly combining luxury with versatility. It features three rows that can accommodate up to seven passengers and provides a generous cargo capacity of up to 94 cubic feet. While it may not be the tallest or most expensive option in the lineup, the GLS offers a unique blend of comfort derived from the S-Class sedan and the off-road capability reminiscent of the G-Class SUV. Owners particularly appreciate its powerful performance and advanced electronic features, which enhance the driving experience. Despite some criticism regarding the interior space being slightly less generous than expected, the overall satisfaction from users underscores its appeal as an elite luxury SUV.
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: $65,985.00
- Good/great deal percentage: 18.4%
- User rating: 4.93 / 5
- Total listings: 98
- Average price: $52,993.00
- Good/great deal percentage: 21.3%
- User rating: 5 / 5
- Total listings: 127
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.
4.8 Overall rating
Filter by rating
Anonymous
Reviewed a 2018 Mercedes-Benz GLS on Jan 9, 2021
Unbelievable vehicle. Has every electronic feature you can imagine, plus a few you cant. Driving it is like floating on a magic carpet. Way more power than I need. Most comfortable car Ive ever owned. All in all I couldnt be happier.
Anonymous
Reviewed a 2018 Mercedes-Benz GLS on Dec 28, 2021
The only improvements would be to add a phone charger somewhere other than just in the storeage console.. I would also prefer a roach screen for the navigation system. Other than those additions, I love it!
Anonymous
Reviewed a 2018 Mercedes-Benz GLS on Feb 17, 2021
Great Car. Plenty of power. Good gas mileage Room for dog crate in back of seats
Anonymous
Reviewed a 2018 Mercedes-Benz GLS on Feb 10, 2021
Thought it would have been more spacious, but the volume was added behind the driver’s seat. The front of the vehicle is the size of a GLE Class, 5 passenger vehicle.
2018 Mercedes-Benz GLS Trims
| Trim type | MSRP |
|---|---|
| 450 4MATIC | $69,550 |
| 550 4MATIC | $94,950 |
| AMG GLS 63 4MATIC | $125,300 |
2018 Mercedes-Benz GLS Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2018 Mercedes-Benz GLS prices has changed over time.
See more price trends
