Used 2018 Mercedes-Benz GLS for Sale nearPhiladelphia, PA
Shop with transparent pricing.
Only show listings that include dealer fees- Year:
- 2018
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 449 hp 4.7L V8
- Exterior color:
- designo Diamond White Metallic
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Ginger Beige/Espresso Brown
- Transmission:
- 9-Speed Automatic
- Mileage:
- 121,472
- Stock #:
- 139072T01
- VIN:
- 4JGDF7DE5JB139072
-$380
Sponsored by Hyundai of Trenton
2018 Mercedes-Benz GLS
550 4MATIC
121,472 mi
$18,278
$17,898
- Year:
- 2017
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 362 hp 3L V6
- Exterior color:
- Black
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 86,804
- Stock #:
- LUX388
- VIN:
- 4JGDF6EE1HA930093
Sponsored Listing
2017 Mercedes-Benz GLS
450 4MATIC
86,804 mi
$16,990
- Year:
- 2018
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 449 hp 4.7L V8
- Exterior color:
- Selenite Gray
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 92,458
- Stock #:
- M183788
- VIN:
- 4JGDF7DE7JB063788
-$1,958
Sponsored Listing
2018 Mercedes-Benz GLS
550 4MATIC
92,458 mi
$24,158
$22,999
- Year:
- 2019
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 577 hp 5.5L V8
- Exterior color:
- Black
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 7-Speed Automatic
- Mileage:
- 88,070
- VIN:
- 4JGDF7FE5KB228025
2019 Mercedes-Benz GLS
AMG GLS 63 4MATIC
88,070 mi
$37,420
- Year:
- 2018
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 449 hp 4.7L V8
- Exterior color:
- Obsidian Black Metallic
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Saddle Brown/Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 73,356
- Stock #:
- JB118132T
- VIN:
- 4JGDF7DE2JB118132
2018 Mercedes-Benz GLS
550 4MATIC
73,356 mi
$26,471
- Year:
- 2018
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 449 hp 4.7L V8
- Exterior color:
- designo Diamond White Metallic
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Ginger Beige/Espresso Brown
- Transmission:
- 9-Speed Automatic
- Mileage:
- 121,472
- Stock #:
- 139072T01
- VIN:
- 4JGDF7DE5JB139072
-$380
2018 Mercedes-Benz GLS
550 4MATIC
121,472 mi
$18,278
$17,898
- Year:
- 2017
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 362 hp 3L V6
- Exterior color:
- Black
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 86,804
- Stock #:
- LUX388
- VIN:
- 4JGDF6EE1HA930093
2017 Mercedes-Benz GLS
450 4MATIC
86,804 mi
$16,990
- Year:
- 2017
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 577 hp 5.5L V8
- Exterior color:
- designo Cardinal Red Metallic
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Porcelain/Black
- Transmission:
- 7-Speed Automatic
- Mileage:
- 71,348
- VIN:
- 4JGDF7FE5HA853054
2017 Mercedes-Benz GLS
AMG GLS 63 4MATIC
71,348 mi
$33,990
- Year:
- 2018
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 449 hp 4.7L V8
- Exterior color:
- White
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 90,439
- Stock #:
- JB019273
- VIN:
- 4JGDF7DE7JB019273
-$1,682
2018 Mercedes-Benz GLS
550 4MATIC
90,439 mi
$21,894
$20,212
- Year:
- 2018
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 449 hp 4.7L V8
- Exterior color:
- Selenite Gray
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 92,458
- Stock #:
- M183788
- VIN:
- 4JGDF7DE7JB063788
-$1,958
2018 Mercedes-Benz GLS
550 4MATIC
92,458 mi
$24,158
$22,999
- Year:
- 2019
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 449 hp 4.7L V8
- Exterior color:
- White
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 111,914
- Stock #:
- 190933
- VIN:
- 4JGDF7DE9KB190933
2019 Mercedes-Benz GLS
550 4MATIC
111,914 mi
$21,695
- Year:
- 2018
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 362 hp 3L V6
- Exterior color:
- Black
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 76,263
- Stock #:
- JB062222
- VIN:
- 4JGDF6EE6JB062222
2018 Mercedes-Benz GLS
450 4MATIC
76,263 mi
$21,085
- Year:
- 2017
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 449 hp 4.7L V8
- Exterior color:
- Black
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 96,727
- Stock #:
- 795422
- VIN:
- 4JGDF7DE9HA795422
2017 Mercedes-Benz GLS
550 4MATIC
96,727 mi
$21,194
CarGurus Analysis:
2018 Mercedes-Benz GLS
With 233 currently listed for sale near Philadelphia, PA and an average price of $22,443, 27.5% of 2018 Mercedes-Benz GLSs for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2018 Mercedes-Benz GLS 4.8 / 5 stars.
60.9% of 2018 GLS models on CarGurus are accident free.
- Year:
- 2019
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 362 hp 3L V6
- Exterior color:
- Polar White
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 77,203
- Stock #:
- 237978
- VIN:
- 4JGDF6EE3KB237978
2019 Mercedes-Benz GLS
450 4MATIC
77,203 mi
$20,399
- Year:
- 2018
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 449 hp 4.7L V8
- Exterior color:
- Black
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown (Ginger Beige/Espress)
- Transmission:
- Automatic
- Mileage:
- 73,413
- Stock #:
- 001698
- VIN:
- 4JGDF7DE4JB001698
2018 Mercedes-Benz GLS
550 4MATIC
73,413 mi
$26,649
- Year:
- 2017
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 362 hp 3L V6
- Exterior color:
- Diamond Silver Metallic
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 84,176
- Stock #:
- 969962
- VIN:
- 4JGDF6EE8HA966962
2017 Mercedes-Benz GLS
450 4MATIC
84,176 mi
$17,082
- Year:
- 2019
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 577 hp 5.5L V8
- Exterior color:
- Black
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 106,462
- Stock #:
- S-227684
- VIN:
- 4JGDF7FE7KB227684
2019 Mercedes-Benz GLS
AMG GLS 63 4MATIC
106,462 mi
$35,975
- Year:
- 2019
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 362 hp 3L V6
- Exterior color:
- Black
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 85,925
- Stock #:
- KB228558
- VIN:
- 4JGDF6EE2KB228558
2019 Mercedes-Benz GLS
450 4MATIC
85,925 mi
$20,485
- Year:
- 2017
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 362 hp 3L V6
- Exterior color:
- Blue
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown (Beige Leatherette)
- Transmission:
- 9-Speed Automatic
- Mileage:
- 79,925
- Stock #:
- 883801
- VIN:
- 4JGDF6EE7HA883801
2017 Mercedes-Benz GLS
450 4MATIC
79,925 mi
$17,598
- Year:
- 2019
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 577 hp 5.5L V8
- Exterior color:
- Diamond White Metallic
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Porcelain / Black Leather
- Transmission:
- 7-Speed Automatic
- Mileage:
- 99,785
- Stock #:
- 6026-119
- VIN:
- 4JGDF7FE6KB216434
2019 Mercedes-Benz GLS
AMG GLS 63 4MATIC
99,785 mi
$34,889
- Year:
- 2018
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 449 hp 4.7L V8
- Exterior color:
- White
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray
- Transmission:
- Automatic
- Mileage:
- 89,609
- Stock #:
- AA049545
- VIN:
- 4JGDF7DEXJB049545
-$500
2018 Mercedes-Benz GLS
550 4MATIC
89,609 mi
$21,992
$21,492
- Year:
- 2017
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 449 hp 4.7L V8
- Exterior color:
- White
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown
- Transmission:
- 9-Speed Automatic
- Mileage:
- 107,802
- Stock #:
- 950227
- VIN:
- 4JGDF7DE9HA950227
2017 Mercedes-Benz GLS
550 4MATIC
107,802 mi
$16,697
- Year:
- 2018
- Make:
- Mercedes-Benz
- Model:
- GLS
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 449 hp 4.7L V8
- Exterior color:
- Obsidian Black Metallic
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Saddle Brown/Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 73,356
- Stock #:
- JB118132T
- VIN:
- 4JGDF7DE2JB118132
Sponsored Listing
2018 Mercedes-Benz GLS
550 4MATIC
73,356 mi
$26,471
CarGurus Analysis: 2018 Mercedes-Benz GLS
Summary
With 233 currently listed for sale near Philadelphia, PA and an average price of $22,443, 27.5% of 2018 Mercedes-Benz GLSs for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2018 Mercedes-Benz GLS 4.8 / 5 stars.
60.9% of 2018 GLS models on CarGurus are accident free.
Why it stands out
The 2018 Mercedes-Benz GLS stands out as a large luxury SUV that emphasizes comfort, space, and a premium feel. It offers three rows of seating for six or seven people, up to 94 cubic feet of cargo space, and a cabin that blends the comfort and space of a Mercedes-Benz S-Class luxury sedan with some off-road capability. That combination makes it appealing to buyers who want a family-focused SUV without giving up the brand’s upscale character.
For 2018, Mercedes-Benz dropped the GLS350d from the lineup, and the GLS450 received a new wheel design. The GLS450 came with a 3.0-liter twin-turbo V6 with 362 horsepower and 369 lb-ft of torque, along with standard equipment that included 19-inch wheels, Airmatic air suspension, a backup camera, forward emergency braking, Attention Assist, dual-zone climate, a sunroof, heated front seats with MB-Tex upholstery, burl walnut trim, power-folding third-row seats, auto-dimming and power-folding mirrors, an eight-inch touchscreen, HD Radio, and five years of mbrace Connect apps and remote connectivity. Those features help explain why the GLS feels well equipped even in its earlier form.
The GLS also has a practical side that owners tend to appreciate, especially its easy-to-use technology and comfort. At the same time, it is not without drawbacks: access to the third row can be a challenge, and touch-sensing controls are a common complaint. Even so, the 2018 GLS remains distinctive for buyers who want a roomy, upscale three-row SUV with strong luxury credentials and a broad list of standard equipment.
Other model years to consider
- Average price: $70,729
- Good/great deal percentage: 32.5%
- User rating: 5 / 5
- Total listings: 243
- Average price: $35,981
- Good/great deal percentage: 32.3%
- User rating: 5 / 5
- Total listings: 192
- Average price: $51,962
- Good/great deal percentage: 38.9%
- Total listings: 203
This analysis is based on CarGurus' proprietary market data from September 14, 2026, CarGurus experts' opinions, and generative AI.
*CarGurus meticulously monitors the prices of millions of pre-owned vehicle listings, offering users precise and up-to-date market insights. Historical pricing data excludes any additional dealer fees as of May 3, 2026.
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 |
*CarGurus meticulously monitors the prices of millions of pre-owned vehicle listings, offering users precise and up-to-date market insights. Historical pricing data excludes any additional dealer fees as of May 3, 2026.
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 trends2018 Mercedes-Benz GLS Pricing Analysis: Philadelphia, PA Market Report
Pricing by Nearby Locations
Market Area: Philadelphia, PA
Key Insights
- Highest Prices in Toms River, NJ: The market in Toms River commands the highest average price at $27,402, likely due to higher demand or lower inventory.
- Lowest Prices in Dover, DE: Dover offers the lowest average price at $17,648, indicating a more price-sensitive market or higher inventory turnover.
- Inventory Variation: Cities like Trenton, NJ (236 listings) and Newark, DE (229 listings) show a balance of inventory and pricing, suggesting stable market conditions.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Toms River, NJ | 229 | $27,402 |
| Trenton, NJ | 236 | $26,756 |
| Newark, DE | 229 | $20,426 |
| Allentown, PA | 230 | $25,700 |
| Reading, PA | 230 | $23,055 |
| New York, NY | 250 | $24,125 |
| New Brunswick, NJ | 255 | $25,015 |
| Atlantic City, NJ | 224 | $18,639 |
| Dover, DE | 230 | $17,648 |
| Lancaster, PA | 227 | $21,891 |
Pricing by Trim Packages
Key Insights
- Most Common Trim: The 450 4MATIC is the most prevalent trim with 432 listings, indicating strong demand for this configuration.
- Premium Pricing for AMG Trim: The AMG GLS 63 4MATIC has a significantly higher MSRP of $125,300, reflecting its luxury features and performance capabilities.
- AWD Dominance: All trims are AWD, catering to consumer preferences for all-weather capability, which is likely driving demand.
Trim-Level Details
| Trim | Listings | MSRP | Drivetrain | Engine |
|---|---|---|---|---|
| 450 4MATIC | 432 | $69,550 | AWD | 3.0L 362 hp V6 |
| AMG GLS 63 4MATIC | 76 | $125,300 | AWD | 5.5L 577 hp V8 |
| 550 4MATIC | 66 | $94,950 | AWD | 4.7L 449 hp V8 |
Pricing Analysis by Model Year
Key Insights
- Strong Demand for Newer Models: The 2026 model is priced at $83,570, which is about -2.5% below MSRP, indicating a slight depreciation trend for new models.
- Significant Depreciation for Older Models: The 2019 model shows a steep decline, priced at $25,796, which is -63.2% from its original MSRP, reflecting typical depreciation patterns.
- Best Value in Recent Models: The 2022 model is priced at $50,936, only -34.8% from MSRP, suggesting it may offer a good balance of price and features for buyers.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2026 Mercedes-Benz GLS | $90,250 | $83,570 | -7.4% |
| 2025 Mercedes-Benz GLS | $89,200 | $85,672 | -3.0% |
| 2024 Mercedes-Benz GLS | $87,000 | $70,681 | -18.7% |
| 2023 Mercedes-Benz GLS | $81,800 | $51,737 | -36.8% |
| 2022 Mercedes-Benz GLS | $77,850 | $50,936 | -34.6% |
| 2021 Mercedes-Benz GLS | $76,000 | $39,991 | -47.4% |
| 2020 Mercedes-Benz GLS | $75,200 | $35,866 | -52.3% |
| 2019 Mercedes-Benz GLS | $70,150 | $25,796 | -63.2% |
| 2017 Mercedes-Benz GLS | $67,050 | $23,197 | -65.4% |
These recommendations are based on CarGurus' proprietary market data from September 16, 2026, CarGurus experts' opinions, and generative AI.
*CarGurus meticulously monitors the prices of millions of pre-owned vehicle listings, offering users precise and up-to-date market insights. Historical pricing data excludes any additional dealer fees as of May 3, 2026.
How much does the 2018 Mercedes-Benz GLS cost?
| Metric | Value |
|---|---|
| Current Average Price | $21,419 |
| Year-Round Low | $21,419 |
| Year-Round High | $24,630 |
| Average Price a Year Ago | $24,620 |
| Change vs. Last Year | −13.00% |
Prices have softened 13.00% compared to this time last year, making it a favorable time to shop this model year.
There are 980 listings available, which suggests a healthy amount of inventory to compare.
Is the 2018 Mercedes-Benz GLS a good car?
Yes — 4.8/5 is a strong user rating, and owners consistently praise the GLS for its luxurious features, comfort, and performance. The review summary also points to strong power delivery and electronic features that improve the driving experience, while the overview shows why it fits buyers who want a large, family-focused luxury SUV with three rows and a premium cabin. With 34.8% of listings marked as good or great deals, you have a meaningful number of opportunities to shop selectively.
Is the 2018 Mercedes-Benz GLS reliable?
Owners rate it 4.8/5, a strong signal of long-term satisfaction.
The review summary highlights a dependable-feeling ownership experience through its comfort, luxury, and performance, with owners especially appreciating the way it delivers power and the electronic features that enhance daily use. For used buyers, that kind of satisfaction can reduce long-term ownership risk, though you should still verify condition carefully before committing.
What should I look for when buying a used 2018 Mercedes-Benz GLS?
At 65.4% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
You should start with a vehicle history report so you can separate clean examples from those with prior damage. After that, prioritize a pre-purchase inspection that focuses on body condition, interior wear, and how well the technology and comfort features are functioning. Because this is a large luxury SUV, you should also pay close attention to signs of heavy family use and whether the cabin still feels well cared for.
Is now a good time to buy a used 2018 Mercedes-Benz GLS?
This looks like a moderate, selective buyer’s market, so you can shop patiently and still find worthwhile listings.
- Deal availability: 34.8% of listings are priced as good or great deals.
- Inventory: There are 980 listings available.
- Price trend: Prices have softened 13.00% compared with last year.
- Clean inventory: 65.4% of listings are accident-free.
If you find a listing below $21,419, that's toward the low end of the year-round range and worth acting on quickly.
What is the 2018 Mercedes-Benz GLS's resale value?
The current average of $21,419 sits slightly below last year's $24,620.
That price movement suggests the market has already adjusted downward, which can help you buy at a more favorable entry point today. For a future seller, it also means resale value may depend more heavily on condition, mileage, and how well the vehicle has been maintained. Well-kept examples should stand out more clearly if the broader market remains soft.
Vehicles with strong owner satisfaction ratings, like this model year's 4.8/5, tend to retain buyer demand, which supports resale value over time.
Should I buy a 2018 Mercedes-Benz GLS or consider a different year?
If you're weighing the 2018 against nearby model years, here's how to think about it:
Choose the 2018 if:
- 34.8% of listings are priced as good or great deals.
- At 65.4% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
- Price trend: Prices have softened 13.00% compared with last year.
- Owners rate it 4.8/5 — a strong satisfaction signal.
The bottom line: The 2018 GLS makes the most sense if you want a spacious, upscale three-row SUV and you value current pricing that has moved lower than last year. If you are especially price-sensitive, you can also use the softer market to compare carefully against nearby model years and focus on the cleanest, best-maintained example rather than rushing into the first attractive listing.
These recommendations are based on CarGurus' proprietary market data from September 15, 2026, CarGurus experts' opinions, and generative AI.
*CarGurus meticulously monitors the prices of millions of pre-owned vehicle listings, offering users precise and up-to-date market insights. Historical pricing data excludes any additional dealer fees as of May 3, 2026.
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