Used 2018 Mercedes-Benz GLS for Sale near Indiana
Shop with transparent pricing.
Only show listings that include dealer fees- 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:
- Lunar Blue Metallic
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Ginger Beige/Espresso Brown
- Transmission:
- 9-Speed Automatic
- Mileage:
- 71,930
- Stock #:
- SR3742
- VIN:
- 4JGDF6EE0KB227327
Sponsored by Indy Auto Man
2019 Mercedes-Benz GLS
450 4MATIC
71,930 mi
$23,772
- 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:
- 108,142
- Stock #:
- 046936
- VIN:
- 4JGDF6EE9JB046936
Sponsored Listing
2018 Mercedes-Benz GLS
450 4MATIC
108,142 mi
$16,212
- 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:
- Iridium Silver Metallic
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 46,963
- Stock #:
- STK202767
- VIN:
- 4JGDF7DE3KB202767
Sponsored Listing
2019 Mercedes-Benz GLS
550 4MATIC
46,963 mi
$33,990
- 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:
- Almond
- Transmission:
- 9-Speed Automatic
- Mileage:
- 117,109
- Stock #:
- J2490
- VIN:
- 4JGDF6EE3HA832957
2017 Mercedes-Benz GLS
450 4MATIC
117,109 mi
$14,541
- 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 Metallic
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 107,050
- Stock #:
- 265135B
- VIN:
- 4JGDF7DE6JB154776
-$784
2018 Mercedes-Benz GLS
550 4MATIC
107,050 mi
$21,033
$20,249
- 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:
- 85,130
- Stock #:
- 061511
- VIN:
- 4JGDF7DE9JB061511
-$1,000
2018 Mercedes-Benz GLS
550 4MATIC
85,130 mi
$22,444
$21,444
- 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
$36,721
- 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:
- Brown
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown (Beige)
- Transmission:
- Automatic
- Mileage:
- 51,391
- Stock #:
- 909151S
- VIN:
- 4JGDF7DE6HA909151
2017 Mercedes-Benz GLS
550 4MATIC
51,391 mi
$29,590
- 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:
- Obsidian Black Metallic
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 103,632
- Stock #:
- M5172
- VIN:
- 4JGDF6EE0HA935172
2017 Mercedes-Benz GLS
450 4MATIC
103,632 mi
$16,288
- 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:
- Obsidian Black Metallic
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black Exclusive Leather
- Transmission:
- 7-Speed Automatic
- Mileage:
- 62,049
- Stock #:
- NAC1151
- VIN:
- 4JGDF7FEXHA955532
2017 Mercedes-Benz GLS
AMG GLS 63 4MATIC
62,049 mi
$36,453
- 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:
- Gray (Selenite Grey)
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 78,870
- Stock #:
- JHA856779
- VIN:
- 4JGDF6EE4HA856779
2017 Mercedes-Benz GLS
450 4MATIC
78,870 mi
$20,128
- 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:
- Porcelain/Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 116,439
- Stock #:
- GZ2312A
- VIN:
- 4JGDF7DE5JB043331
2018 Mercedes-Benz GLS
550 4MATIC
116,439 mi
$20,526
- 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:
- White
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown (Beige)
- Transmission:
- 9-Speed Automatic
- Mileage:
- 107,116
- Stock #:
- A220059
- VIN:
- 4JGDF6EEXKB220059
2019 Mercedes-Benz GLS
450 4MATIC
107,116 mi
$18,719
CarGurus Analysis:
2018 Mercedes-Benz GLS
With 980 currently listed for sale and an average price of $21,188, 35.1% 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.
64.6% 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:
- 449 hp 4.7L V8
- Exterior color:
- White
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown
- Transmission:
- Automatic
- Mileage:
- 107,147
- Stock #:
- B00309
- VIN:
- 4JGDF7DE7KB202013
2019 Mercedes-Benz GLS
550 4MATIC
107,147 mi
$21,822
- 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:
- 9-Speed Automatic
- Mileage:
- 61,375
- Stock #:
- 19045
- VIN:
- 4JGDF7DE6KB227890
2019 Mercedes-Benz GLS
550 4MATIC
61,375 mi
$30,285
- 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
2018 Mercedes-Benz GLS
550 4MATIC
90,439 mi
$20,827
- 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:
- Designo Nappa
- Transmission:
- 7-Speed Automatic
- Mileage:
- 95,269
- Stock #:
- 201792
- VIN:
- 4JGDF7FE1KB201792
2019 Mercedes-Benz GLS
AMG GLS 63 4MATIC
95,269 mi
$29,146
- 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:
- Lunar Blue Metallic
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Ginger Beige/Espresso Brown
- Transmission:
- 9-Speed Automatic
- Mileage:
- 71,930
- Stock #:
- SR3742
- VIN:
- 4JGDF6EE0KB227327
2019 Mercedes-Benz GLS
450 4MATIC
71,930 mi
$23,772
- 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:
- Gray (Steel Grey Metallic)
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown
- Transmission:
- 9-Speed Automatic
- Mileage:
- 141,480
- Stock #:
- R88444
- VIN:
- 4JGDF7DE6HA788444
2017 Mercedes-Benz GLS
550 4MATIC
141,480 mi
$16,352
- 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:
- 131,507
- Stock #:
- 811890
- VIN:
- 4JGDF7DE3HA811890
2017 Mercedes-Benz GLS
550 4MATIC
131,507 mi
$18,229
- 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:
- Automatic
- Mileage:
- 62,500
- Stock #:
- 185402
- VIN:
- 4JGDF7FE1KB185402
2019 Mercedes-Benz GLS
AMG GLS 63 4MATIC
62,500 mi
$36,681
- 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:
- POLAR WHITE
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 98,447
- Stock #:
- 749840
- VIN:
- 4JGDF6EE5HA749840
2017 Mercedes-Benz GLS
450 4MATIC
98,447 mi
$15,784
- 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:
- Almond
- Transmission:
- 9-Speed Automatic
- Mileage:
- 117,109
- Stock #:
- J2490
- VIN:
- 4JGDF6EE3HA832957
Sponsored Listing
2017 Mercedes-Benz GLS
450 4MATIC
117,109 mi
$14,541
CarGurus Analysis: 2018 Mercedes-Benz GLS
Summary
With 980 currently listed for sale and an average price of $21,188, 35.1% 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.
64.6% 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: $72,701
- Good/great deal percentage: 33.4%
- User rating: 5 / 5
- Total listings: 1,430
- Average price: $79,601
- Good/great deal percentage: 34.0%
- Total listings: 1,493
- Average price: $32,489
- Good/great deal percentage: 37.4%
- User rating: 5 / 5
- Total listings: 744
This analysis is based on CarGurus' proprietary market data from September 21, 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
Pricing by Popular US Cities
Market Area: Nationwide
Key Insights
- Highest Prices in Dallas: The city of Dallas, TX ($22,905) shows the highest average price, likely reflecting a strong demand for luxury vehicles in the area.
- Lowest Prices in Miami: Conversely, Miami, FL ($17,473) offers the lowest average price, indicating a more price-sensitive market or higher inventory turnover.
- Inventory Variation: Cities like Philadelphia (238 listings) and Washington, DC (247 listings) have substantial inventory, which may contribute to more stable pricing around the national average.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Dallas, TX | 183 | $22,905 |
| Philadelphia, PA | 238 | $22,153 |
| New York, NY | 259 | $22,667 |
| Washington, DC | 247 | $21,193 |
| Los Angeles, CA | 147 | $20,926 |
| Chicago, IL | 205 | $19,635 |
| Atlanta, GA | 205 | $19,826 |
| Boston, MA | 212 | $20,652 |
| Houston, TX | 168 | $23,031 |
| Miami, FL | 137 | $17,473 |
Pricing by Trim Packages
Key Insights
- Most Common Trim: The 450 4MATIC trim leads the inventory with 2,596 listings, indicating strong demand for this configuration.
- Premium Pricing for AMG: The AMG GLS 63 4MATIC trim, with an MSRP of $125,300, reflects a significant premium, appealing to buyers seeking high performance and luxury features.
- AWD Dominance: All trims listed are AWD, highlighting a market preference for all-weather capability in luxury SUVs.
Trim-Level Details
| Trim | Listings | MSRP | Drivetrain | Engine |
|---|---|---|---|---|
| 450 4MATIC | 2596 | $69,550 | AWD | 3.0L 362 hp V6 |
| AMG GLS 63 4MATIC | 260 | $125,300 | AWD | 5.5L 577 hp V8 |
| 550 4MATIC | 241 | $94,950 | AWD | 4.7L 449 hp V8 |
Pricing Analysis by Model Year
Key Insights
- New Models at a Premium: The 2026 model is priced at $101,522, which is approximately 12.5% above its MSRP, indicating strong demand for the latest model.
- Significant Depreciation: The 2019 model shows a steep decline, with an average price of $24,446, reflecting a depreciation of about -65.2% from its original MSRP.
- Best Value in Recent Years: The 2022 model is priced at $51,026, which is -34.8% below its MSRP, making it a potentially attractive option for buyers looking for value.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2026 Mercedes-Benz GLS | $90,250 | $101,522 | +12.5% |
| 2025 Mercedes-Benz GLS | $89,200 | $81,442 | -8.9% |
| 2024 Mercedes-Benz GLS | $87,000 | $75,907 | -12.7% |
| 2023 Mercedes-Benz GLS | $81,800 | $67,057 | -18.1% |
| 2022 Mercedes-Benz GLS | $77,850 | $51,026 | -34.8% |
| 2021 Mercedes-Benz GLS | $76,000 | $51,119 | -32.7% |
| 2020 Mercedes-Benz GLS | $75,200 | $33,806 | -55.1% |
| 2019 Mercedes-Benz GLS | $70,150 | $24,446 | -65.2% |
| 2017 Mercedes-Benz GLS | $67,050 | $19,174 | -71.4% |
These recommendations are based on CarGurus' proprietary market data from September 23, 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 | $21,181 |
| Year-Round Low | $21,181 |
| Year-Round High | $24,344 |
| Average Price a Year Ago | $24,345 |
| 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 984 listings available, which gives you a solid amount of inventory to compare before you buy.
Is the 2018 Mercedes-Benz GLS a good car?
Yes — the 4.8/5 user rating points to strong owner satisfaction. Owners consistently praise its luxurious features, comfort, power, and the electronic features that improve the driving experience. That fits well if you want a large, premium three-row SUV with space for six or seven people and a cabin that leans into comfort and upscale character. With 36.1% of listings marked as good or great deals, you have a decent chance of finding a compelling offer.
Is the 2018 Mercedes-Benz GLS reliable?
Owners rate it 4.8/5, a strong signal of long-term satisfaction.
The owner feedback also points to a vehicle that feels dependable in daily use, with praise centered on comfort, power, and features that make ownership feel easy and trouble-free. That said, used luxury SUVs can carry higher long-term ownership risk if maintenance history is incomplete, so you should pay close attention to service records and overall condition before you commit.
What should I look for when buying a used 2018 Mercedes-Benz GLS?
At 64.6% 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 confirm accident records, title status, and service history before you go any further. After that, prioritize a thorough pre-purchase inspection, especially for signs of wear in the suspension, electronics, and interior controls. Because this model is a luxury three-row SUV, you should also focus on how well the cabin, seating, and convenience features have held up over time.
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 value if you compare listings carefully.
- Deal availability: 36.1% of listings are priced as good or great deals.
- Inventory: There are 984 listings available.
- Price trend: Prices have softened 13.00% compared with last year.
- Clean inventory: 64.6% of listings are accident-free.
If you find a listing below $21,181, 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 $21,181 sits slightly below last year's $24,345.
That price movement suggests the market has cooled, which can make the GLS more attractive to used buyers today but may also limit upside for a future seller if prices continue to soften. If you buy at the right number and keep the vehicle in strong condition, you can help protect your resale position. Strong demand for a well-reviewed luxury SUV can still support value, especially when the vehicle presents cleanly and has a solid history.
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:
- 36.1% of listings are priced as good or great deals.
- At 64.6% 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 is a strong choice if you want a well-equipped, comfort-focused luxury SUV and you can verify a clean history and good maintenance. If you are especially price-sensitive, you may want to compare nearby years and focus on whichever one gives you the best combination of condition, history, and asking price rather than choosing by model year alone.
These recommendations are based on CarGurus' proprietary market data from September 22, 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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