2018 GMC Acadia prices in the U.S.
The median pre-owned asking price for a 2018 GMC Acadia in the U.S. is $15,981 based on 601 pre-owned listings (of 609 total).
As of September 9, 2026, the median asking price for a used 2018 GMC Acadia in the U.S. is $15,981, based on 601 active dealer listings tracked by VinAssessment.
◷ Updated September 9, 2026 ▤ 609 active dealer listings, refreshed daily ⛭ Generation: 2017–2025
Typical: $12,995–$18,773 — the middle half of 609 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 GMC Acadia
The $12,995–$18,773 typical range isn't randomness — three factors explain most of it:
Asking prices run about $22,636 at 30K–45K miles and fall to $13,299 over 105K miles — roughly $1,200 for every 10,000 miles.
The SLE 1 typically asks $13,015, while the Denali asks $18,562 — same year, same market.
The same car typically asks $13,995 in New Jersey but $19,299 in Montana.
Find your mileage and trim in the configurator below.
Configure the exact car
Modelled from 208 real asking prices, adjusted for mileage and location. Not a formal appraisal.
What would a 2018 GMC Acadia cost per month?
Estimate the monthly payment on a $18,562 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.
2018 GMC Acadia: a fair price for your mileage
A 2018 GMC Acadia sheds roughly $1,200 for every 10,000 miles. Find your mileage below.
Fair price by mileage and trim
| Mileage | All listings | Denali | SLT 1 | SLE 2 | SLE 1 | SLT 2 |
|---|---|---|---|---|---|---|
| 30K–45K miles | $22,636 | $25,998 | $22,234 | — | — | — |
| 45K–60K miles | $20,934 | $23,223 | $19,723 | $19,306 | — | — |
| 60K–75K miles | $20,099 | $22,196 | $19,279 | $19,462 | — | — |
| 75K–90K miles | $18,999 | $20,349 | $17,666 | $17,798 | $15,103 | $18,484 |
| 90K–105K miles | $16,408 | $18,490 | $15,973 | $15,431 | $13,839 | $17,229 |
| Over 105K miles | $13,299 | $15,981 | $12,567 | $12,786 | $12,877 | $13,728 |
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 ⓘ |
|---|---|---|---|
| 30K–45K miles | 13 listings | $22,636 | $22K–$26K |
| 45K–60K miles | 22 listings | $20,934 | $19K–$23K |
| 60K–75K miles | 45 listings | $20,099 | $19K–$22K |
| 75K–90K miles | 95 listings | $18,999 | $17K–$20K |
| 90K–105K miles | 113 listings | $16,408 | $15K–$18K |
| Over 105K miles | 317 listings | $13,299 | $11K–$16K |
Same trim and condition assumed — mileage is the biggest lever after configuration.
2018 GMC Acadia: price by trim
| Trim | Based on ⓘ | Median price ⓘ | Typical range ⓘ | Where it sits ⓘ |
|---|---|---|---|---|
| Denali | 208 listings | $18,562 | $16K–$21K | |
| SLT 1 | 207 listings | $15,017 | $13K–$18K | |
| SLE 2 | 98 listings | $14,834 | $12K–$17K | |
| SLE 1 | 55 listings | $13,015 | $12K–$15K | |
| SLT 2 | 41 listings | $16,111 | $13K–$17K |
Live 2018 GMC Acadia listings, priced by VIN
Every VIN links to a full market report: decode, active listings and the local price band. Shop 2017–2019 GMC Acadia listings on VehiSales →.
Price history
Median asking price by month · shaded band is the typical range (25th–75th percentile)
The median listing price for a 2018 GMC Acadia is $15,994 (September 2026) — down 11.1% from $17,990 in September 2025.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| September 2026 | $15,994 | $13K–$19K | 394 |
| August 2026 | $15,900 | $13K–$19K | 881 |
| July 2026 | $15,944 | $13K–$19K | 843 |
| June 2026 | $16,167 | $13K–$19K | 812 |
| May 2026 | $16,482 | $13K–$19K | 848 |
| April 2026 | $16,368 | $14K–$19K | 690 |
| March 2026 | $16,244 | $14K–$19K | 758 |
| February 2026 | $15,999 | $14K–$19K | 724 |
| January 2026 | $15,995 | $14K–$19K | 705 |
| December 2025 | $15,998 | $14K–$19K | 531 |
| November 2025 | $16,874 | $15K–$19K | 437 |
| October 2025 | $17,000 | $15K–$20K | 436 |
| September 2025 | $17,990 | $15K–$20K | 270 |
2018 GMC Acadia prices by state
Listed this year counts every 2018 GMC Acadia first listed in 2026 (sold and active), with currently active cars as a floor. Typical price is the median of each car's latest asking price — or the average of active listings where this-year data is thin.
Factory configurations of the 2018 GMC Acadia
28 factory configurations left the plant as a 2018 GMC Acadia — the most common are below, each decoded into its own build sheet from the VIN pattern.
- SLT-1 FWD 2.5L 4cyl FWD $13,698
- SLT-1 FWD 3.6L 6cyl FWD $14,000
- SLE-1 AWD 2.5L 4cyl AWD $14,349
- SLT-2 AWD 3.6L 6cyl AWD $16,000
- SLE-2 AWD 3.6L 6cyl AWD $14,997
- Denali 3.6L 6cyl AWD $18,515
- SLE-1 AWD 3.6L 6cyl AWD $12,995
- SLE-1 FWD 2.5L 4cyl FWD $12,999
- SLE-2 AWD 3.6L 6cyl AWD 175 built
- SLT-2 FWD 3.6L 6cyl FWD $15,000
- SLE-2 FWD 3.6L 6cyl FWD $13,975
- SLE-2 AWD 2.5L 4cyl AWD $12,995
- Denali 3.6L 6cyl FWD $17,250
- SLT-1 AWD 3.6L 6cyl AWD $14,709
Keep exploring Acadia prices
2018 GMC Acadia · $15,981 typical · 609 listingsOther GMC Acadia years
More 2018 GMC prices
Own a 2018 GMC Acadia? See what it's worth →
Frequently asked questions
Why do 2018 GMC Acadia prices range from $8,516 to $24,202?
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 $12,995 and $18,773 — see the mileage and trim breakdowns above for where a specific vehicle lands.
How much should mileage change the price of a 2018 GMC Acadia?
Expect roughly $1,200 less for every 10,000 miles on the odometer. A 60K-mile example should cost about $3,600 less than a 30K-mile one of the same trim — check the fair-price-by-mileage table above for your band.
How many 2018 GMC Acadia are for sale right now?
609 in total, nearly all pre-owned. Counts refresh daily from live dealer inventory.
How we calculate these prices
We track 609 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 reduce the influence of extreme values. This does not verify title status or guarantee that every erroneous listing is excluded. 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.
Want the original factory equipment and MSRP behind a specific car? Look up the original Monroney sticker for a 2018 GMC →
Shopping for this car?
Check individual VINs before you buy — decode the exact trim and mileage, see every active listing, and how each price compares to the local market.