2018 Gmc Acadia prices in Idaho
The median asking price for a 2018 Gmc Acadia in Idaho is $15,395 based on 5 active listings.
As of July 26, 2026, the median asking price for a 2018 Gmc Acadia in Idaho is $15,395, based on 5 active dealer listings tracked by VinAssessment.
◷ Updated July 26, 2026 ▤ 5 active dealer listings, refreshed daily Methodology →
Typical: $12,301–$16,395 — 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 Gmc Acadia
The $12,301–$16,395 typical range isn't randomness — two factors explain most of it:
The SLE 1 typically asks $13,881, while the Denali asks $18,091 — same year, same market.
Asking prices run about $15,911 under 15K miles and fall to $13,737 over 105K miles — roughly $200 for every 10,000 miles.
Find your mileage and trim in the configurator below.
Configure the exact car
Modelled from 174 real asking prices, adjusted for mileage and location. Not a formal appraisal.
2018 Gmc Acadia: a fair price for your mileage
A 2018 Gmc Acadia sheds roughly $200 for every 10,000 miles. Find your mileage below.
Fair price by mileage and trim
| Mileage | All listings | SLT 1 | Denali | SLE 2 | SLE 1 | SLT 2 |
|---|---|---|---|---|---|---|
| Under 15K miles | $15,911 | $14,470 | $18,274 | — | — | — |
| 30K–45K miles | $22,325 | $22,263 | $25,998 | — | — | — |
| 45K–60K miles | $20,359 | — | $24,046 | $19,007 | — | — |
| 60K–75K miles | $20,045 | $20,295 | $22,868 | $19,717 | $16,049 | $21,188 |
| 75K–90K miles | $18,797 | $18,253 | $20,928 | $16,667 | $15,136 | $18,541 |
| 90K–105K miles | $16,629 | $16,590 | $17,995 | $15,123 | $14,493 | — |
| Over 105K miles | $13,737 | $13,312 | $16,133 | $12,276 | $11,958 | $14,880 |
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 ⓘ |
|---|---|---|---|
| Under 15K miles | 13 listings | $15,911 | $14K–$18K |
| 30K–45K miles | 14 listings | $22,325 | $20K–$25K |
| 45K–60K miles | 13 listings | $20,359 | $20K–$23K |
| 60K–75K miles | 46 listings | $20,045 | $18K–$22K |
| 75K–90K miles | 80 listings | $18,797 | $17K–$20K |
| 90K–105K miles | 104 listings | $16,629 | $15K–$18K |
| Over 105K miles | 258 listings | $13,737 | $12K–$16K |
Same trim and condition assumed — mileage is the biggest lever after configuration. National data; Idaho prices track it closely.
2018 Gmc Acadia: price by trim
| Trim | Based on ⓘ | Median price ⓘ | Typical range ⓘ | Where it sits ⓘ |
|---|---|---|---|---|
| SLT 1 | 174 listings | $15,712 | $13K–$18K | |
| Denali | 169 listings | $18,091 | $16K–$21K | |
| SLE 2 | 99 listings | $14,367 | $12K–$16K | |
| SLE 1 | 45 listings | $13,881 | $11K–$15K | |
| SLT 2 | 39 listings | $15,896 | $14K–$18K |
National data; Idaho prices track it closely.
Price history
Median asking price by month — national · shaded band is the typical range (25th–75th percentile)
The median listing price for a 2018 Gmc Acadia is $16,106 (July 2026) — down 10.4% from $17,981 in August 2025.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| July 2026 | $16,106 | $14K–$19K | 665 |
| June 2026 | $16,615 | $14K–$19K | 783 |
| May 2026 | $16,732 | $14K–$19K | 830 |
| April 2026 | $16,430 | $14K–$19K | 682 |
| March 2026 | $16,239 | $14K–$19K | 755 |
| February 2026 | $15,998 | $14K–$19K | 723 |
| January 2026 | $15,990 | $14K–$19K | 701 |
| December 2025 | $15,998 | $14K–$19K | 529 |
| November 2025 | $16,900 | $15K–$19K | 433 |
| October 2025 | $17,134 | $15K–$20K | 434 |
| September 2025 | $17,988 | $15K–$20K | 360 |
| August 2025 | $17,981 | $15K–$21K | 381 |
2018 Gmc Acadia inventory across the U.S.
Keep exploring Acadia prices
2018 Gmc Acadia · $14,615 typical · 5 listingsOther Gmc Acadia years
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 →.
More 2018 Gmc prices
Frequently asked questions
Why do 2018 Gmc Acadia prices range from $10,179 to $18,781 in Idaho?
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 $12,301 and $16,395 — 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 $200 less for every 10,000 miles on the odometer. A 60K-mile example should cost about $600 less than a 30K-mile one of the same trim — check the fair-price-by-mileage table above for your band.
Do Gmc Acadia prices in Idaho differ from the rest of the country?
Yes. The average in Idaho is $14,615, which is $1,508 below the national average of $16,123. Local supply, demand and transport costs all play a part.
How many 2018 Gmc Acadia are for sale in Idaho 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.
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.