Used 2018 Mercedes-Benz GLS for Sale near Detroit, MI
188 results
CarGurus Analysis:
2018 Mercedes-Benz GLS
With 181 currently listed for sale near Detroit, MI and an average price of $28,940.00, 22.7% 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.
66.9% of 2018 GLS models on CarGurus are accident free.
The 2018 Mercedes-Benz GLS stands out with its spacious interior that accommodates six to seven people, luxurious features, and impressive performance.
CarGurus Analysis: 2018 Mercedes-Benz GLS

Summary
With 181 currently listed for sale near Detroit, MI and an average price of $28,940.00, 22.7% 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.
66.9% of 2018 GLS models on CarGurus are accident free.
The 2018 Mercedes-Benz GLS stands out with its spacious interior that accommodates six to seven people, luxurious features, and impressive performance.
Why it stands out
The 2018 Mercedes-Benz GLS distinguishes itself as a top-tier luxury SUV, merging comfort and practicality with the brand's renowned prestige. As the roomiest vehicle in Mercedes' lineup, it provides ample seating and cargo space, making it an excellent choice for families. Reviews highlight its luxurious features, comfort, and performance, especially the powerful engine options that enhance the driving experience. Additionally, the GLS is equipped with modern electronic features that assist drivers on the road. While some users noted that the interior space could be more accommodating and suggested improvements such as enhanced charging options, the vehicle overall remains a strong contender in the luxury SUV segment. To achieve a balance of luxury and functionality, the GLS combines the spaciousness reminiscent of the S-Class sedans with an advanced suite of features and off-road capabilities.
Other model years to consider
- Average price: $77,971.00
- Good/great deal percentage: 25.0%
- User rating: 5 / 5
- Total listings: 168
- Average price: $35,138.00
- Good/great deal percentage: 28.3%
- User rating: 5 / 5
- Total listings: 145
- Average price: $63,592.00
- Good/great deal percentage: 26.4%
- Total listings: 159
This analysis is based on CarGurus' proprietary market data from June 2, 2026, CarGurus experts' opinions, and generative AI.
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4.8 Overall rating
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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.
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