Used 2018 Mercedes-Benz GLS for Sale near Philadelphia, PA
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CarGurus Analysis:
2018 Mercedes-Benz GLS
With 254 currently listed for sale near Philadelphia, PA and an average price of $22,362.00, 28.0% 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 4.8 / 5 stars.
66.5% of 2018 GLS models on CarGurus are accident free.
The 2018 Mercedes-Benz GLS stands out for its luxurious features, spacious interior, and advanced electronics, although some users mention a lack of interior space compared to their expectations.
CarGurus Analysis: 2018 Mercedes-Benz GLS

Summary
With 254 currently listed for sale near Philadelphia, PA and an average price of $22,362.00, 28.0% 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 4.8 / 5 stars.
66.5% of 2018 GLS models on CarGurus are accident free.
The 2018 Mercedes-Benz GLS stands out for its luxurious features, spacious interior, and advanced electronics, although some users mention a lack of interior space compared to their expectations.
Why it stands out
The 2018 Mercedes-Benz GLS is designed to be the roomiest vehicle in the Mercedes lineup, combining the luxury of S-Class sedans with the agility needed for family-oriented drivers. Offering three rows of seating for six or seven and ample cargo capacity, the GLS presents a compelling blend of space and sophistication. Key updates include impressive performance with a choice of robust engines, and advanced technologies that enhance driving comfort and safety. While the GLS boasts many strengths, such as premium interior materials and a user-friendly infotainment system, some users have pointed out potential limitations in rear seating accessibility and charging options. Overall, the 2018 GLS effectively caters to buyers looking for a luxurious, family-friendly SUV.
Other model years to consider
- Average price: $74,736.00
- Good/great deal percentage: 29.4%
- User rating: 5 / 5
- Total listings: 194
- Average price: $38,761.00
- Good/great deal percentage: 31.5%
- User rating: 5 / 5
- Total listings: 184
- Average price: $48,965.00
- Good/great deal percentage: 38.5%
- User rating: 5 / 5
- Total listings: 213
This analysis is based on CarGurus' proprietary market data from April 28, 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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