2018 Mercedes-Benz GLS-Class prices in Pennsylvania
The median asking price for a 2018 Mercedes-Benz GLS-Class in Pennsylvania is $20,398 based on 5 active listings.
As of August 25, 2026, the median asking price for a 2018 Mercedes-Benz GLS-Class in Pennsylvania is $20,398, based on 5 active dealer listings tracked by VinAssessment.
◷ Updated August 25, 2026 ▤ 5 active dealer listings, refreshed daily ⛭ Generation: 2017–present
Typical: $18,555–$20,745 — the middle half of 5 asking prices
Why the wide range? Price depends mostly on configuration and mileage — see below. This spread covers the middle 96% of asking prices: we exclude the cheapest and priciest 2% (payment-priced ads, typos, salvage) so outliers don't distort it.
What moves the price on a 2018 Mercedes-Benz GLS-Class
The $18,555–$20,745 typical range isn't randomness — two factors explain most of it:
The GLS450-4M typically asks $18,528, while the AMG GL S 63 asks $30,495 — same year, same market.
Asking prices run about $27,998 at 45K–60K miles and fall to $17,396 over 105K miles — roughly $1,800 for every 10,000 miles.
Find your mileage and trim in the configurator below.
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Modelled from 114 real asking prices, adjusted for mileage and location. Not a formal appraisal.
What would a 2018 Mercedes-Benz GLS-Class cost per month?
Estimate the monthly payment on a $18,528 vehicle. Move the numbers to match your own loan.
Estimate only. Excludes tax, title, registration and dealer fees, and assumes a fixed-rate loan with equal monthly payments. Your actual rate depends on your credit and lender.
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2018 Mercedes-Benz GLS-Class: a fair price for your mileage
A 2018 Mercedes-Benz GLS-Class sheds roughly $1,800 for every 10,000 miles. Find your mileage below.
Fair price by mileage and trim
| Mileage | All listings | GLS450-4M | GLS550-4M | AMG GL S 63 |
|---|---|---|---|---|
| 45K–60K miles | $27,998 | $25,500 | $28,771 | — |
| 60K–75K miles | $25,094 | $23,995 | $26,900 | $36,290 |
| 75K–90K miles | $21,984 | $20,745 | $24,995 | — |
| 90K–105K miles | $19,433 | $17,997 | $23,740 | $29,032 |
| Over 105K miles | $17,396 | $15,999 | $20,198 | $27,995 |
Medians of live asking prices per band and version; “—” means fewer than 3 matching listings. National data.
Fair price by mileage — all versions combined
| Mileage ⓘ | Based on ⓘ | Fair price ⓘ | Typical range ⓘ |
|---|---|---|---|
| 45K–60K miles | 11 listings | $27,998 | $25K–$29K |
| 60K–75K miles | 24 listings | $25,094 | $23K–$26K |
| 75K–90K miles | 44 listings | $21,984 | $20K–$24K |
| 90K–105K miles | 36 listings | $19,433 | $18K–$24K |
| Over 105K miles | 66 listings | $17,396 | $16K–$20K |
Same trim and condition assumed — mileage is the biggest lever after configuration. National data; Pennsylvania prices track it closely.
2018 Mercedes-Benz GLS-Class: price by trim
| Trim | Based on ⓘ | Median price ⓘ | Typical range ⓘ | Where it sits ⓘ |
|---|---|---|---|---|
| GLS450-4M | 114 listings | $18,528 | $17K–$22K | |
| GLS550-4M | 58 listings | $23,224 | $21K–$26K | |
| AMG GL S 63 | 13 listings | $30,495 | $28K–$36K |
Based on a small number of listings per trim — medians are indicative, not definitive. National data; Pennsylvania prices track it closely.
Live 2018 Mercedes-Benz GLS-Class listings, priced by VIN
Every VIN links to a full market report: decode, active listings and the local price band. Shop 2017–2019 Mercedes-Benz GLS-Class listings on VehiSales →.
Price history
Median asking price by month — national · shaded band is the typical range (25th–75th percentile)
The median listing price for a 2018 Mercedes-Benz GLS-Class is $20,990 (August 2026) — up 11.2% from $18,882 in March 2026.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| August 2026 | $20,990 | $18K–$25K | 55 |
| July 2026 | $23,240 | $19K–$26K | 62 |
| June 2026 | $19,999 | $17K–$24K | 44 |
| May 2026 | $22,844 | $19K–$25K | 15 |
| April 2026 | $21,000 | $18K–$27K | 17 |
| March 2026 | $18,882 | $16K–$26K | 12 |
2018 Mercedes-Benz GLS-Class inventory across the U.S.
Keep exploring GLS-Class prices
2018 Mercedes-Benz GLS-Class · $20,398 typical · 5 listingsOther Mercedes-Benz GLS-Class years
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Own a 2018 Mercedes-Benz GLS-Class? See what it's worth →
Frequently asked questions
Why do 2018 Mercedes-Benz GLS-Class prices range from $18,486 to $24,655 in Pennsylvania?
The spread comes down to configuration and mileage: higher-mileage, base-configuration examples sit near the low end, while low-mileage and premium configurations reach the top. Half of all listings fall between $18,555 and $20,745 — see the mileage and trim breakdowns above for where a specific vehicle lands.
How much should mileage change the price of a 2018 Mercedes-Benz GLS-Class?
Expect roughly $1,800 less for every 10,000 miles on the odometer. A 60K-mile example should cost about $5,400 less than a 30K-mile one of the same trim — check the fair-price-by-mileage table above for your band.
Do Mercedes-Benz GLS-Class prices in Pennsylvania differ from the rest of the country?
Yes. The average in Pennsylvania is $20,635, which is $816 below the national average of $21,451. Local supply, demand and transport costs all play a part.
How many 2018 Mercedes-Benz GLS-Class are for sale in Pennsylvania right now?
5 in total, nearly all pre-owned. Counts refresh daily from live dealer inventory.
How we calculate these prices
We track 5 active listings for this vehicle across dealer sites nationwide, updated every day. Average and median are computed from real asking prices on live listings. We exclude the top and bottom 2% of prices to remove data errors, salvage titles, and monthly-payment figures posted as if they were sale prices. Prices reflect dealer asking prices — not final sale prices — and exclude taxes, fees, and incentives. Trim and mileage move the price more than any other factor; see the breakdowns above.
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