Used 2018 Mercedes-Benz GLS for Sale near Denver, CO
143 results
Sponsored by AutoNation Buick GMC Park Meadows
CarGurus Analysis:
2018 Mercedes-Benz GLS
With 161 currently listed for sale near Denver, CO and an average price of $23,945.00, 16.1% 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 4.8 / 5 stars.
70.8% of 2018 GLS models on CarGurus are accident-free.
The 2018 Mercedes-Benz GLS impresses with its luxurious features, comfortable ride, and robust performance. However, some drivers have noted that interior space may be less ample than expected.
CarGurus Analysis: 2018 Mercedes-Benz GLS
Summary
With 161 currently listed for sale near Denver, CO and an average price of $23,945.00, 16.1% 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 4.8 / 5 stars.
70.8% of 2018 GLS models on CarGurus are accident-free.
The 2018 Mercedes-Benz GLS impresses with its luxurious features, comfortable ride, and robust performance. However, some drivers have noted that interior space may be less ample than expected.
Why it stands out
The 2018 Mercedes-Benz GLS stands out as one of the most spacious and luxurious SUVs in its class. It successfully combines family-friendly versatility with the opulence of the S-Class sedan. With three rows of seating and a maximum cargo capacity of 94 cubic feet, the GLS is designed for those who require ample space. Despite this, it maintains a refined design and provides a smooth ride, appealing to buyers looking for both comfort and capability. The GLS's strong performance, delivered by its powerful engine options and modern electronic features, enhances the driving experience overall. It offers a balance of luxury and practicality that few competitors can match, including rival SUVs like the Audi Q7 and BMW X7.
Other model years to consider
- Average price: $92,287.00
- Good/great deal percentage: 31.9%
- User rating: 5 / 5
- Total listings: 135
- Average price: $35,646.00
- Good/great deal percentage: 27.7%
- User rating: 5 / 5
- Total listings: 130
- Average price: $67,986.00
- Good/great deal percentage: 34.2%
- Accident-free percentage: 96.6%
- Total listings: 146
This analysis is based on CarGurus' proprietary market data from April 28, 2026, CarGurus experts' opinions, and generative AI.
Relevant articles
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.
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.
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
