2018 Gmc Sierra prices in Wyoming
The median asking price for a 2018 Gmc Sierra in Wyoming is $27,634 based on 6 active listings.
As of July 27, 2026, the median asking price for a 2018 Gmc Sierra in Wyoming is $27,634, based on 6 active dealer listings tracked by VinAssessment.
◷ Updated July 27, 2026 ▤ 6 active dealer listings, refreshed daily Methodology →
Typical: $26,672–$29,498 — the middle half of 6 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 Sierra
The $26,672–$29,498 typical range isn't randomness — two factors explain most of it:
The SLE typically asks $23,900, while the Denali asks $33,791 — same year, same market.
Asking prices run about $30,606 under 15K miles and fall to $24,976 over 105K miles — roughly $500 for every 10,000 miles.
Find your mileage and trim in the configurator below.
Configure the exact car
Modelled from 1,046 real asking prices, adjusted for mileage and location. Not a formal appraisal.
2018 Gmc Sierra: a fair price for your mileage
A 2018 Gmc Sierra sheds roughly $500 for every 10,000 miles. Find your mileage below.
Fair price by mileage and trim
| Mileage | All listings | SLT | Denali | SLE |
|---|---|---|---|---|
| Under 15K miles | $30,606 | $32,326 | $34,335 | $23,298 |
| 15K–30K miles | $35,524 | $33,263 | $44,900 | $32,999 |
| 30K–45K miles | $36,577 | $36,794 | $37,958 | $28,327 |
| 45K–60K miles | $33,428 | $34,028 | $37,764 | $29,101 |
| 60K–75K miles | $33,288 | $33,113 | $36,098 | $26,148 |
| 75K–90K miles | $30,699 | $30,340 | $33,613 | $25,750 |
| 90K–105K miles | $29,480 | $29,358 | $31,900 | $23,997 |
| Over 105K miles | $24,976 | $24,900 | $30,056 | $19,972 |
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 | 33 listings | $30,606 | $22K–$36K |
| 15K–30K miles | 18 listings | $35,524 | $33K–$43K |
| 30K–45K miles | 35 listings | $36,577 | $31K–$40K |
| 45K–60K miles | 90 listings | $33,428 | $29K–$37K |
| 60K–75K miles | 166 listings | $33,288 | $30K–$36K |
| 75K–90K miles | 267 listings | $30,699 | $28K–$33K |
| 90K–105K miles | 306 listings | $29,480 | $27K–$31K |
| Over 105K miles | 990 listings | $24,976 | $21K–$28K |
Same trim and condition assumed — mileage is the biggest lever after configuration. National data; Wyoming prices track it closely.
2018 Gmc Sierra: price by trim
| Trim | Based on ⓘ | Median price ⓘ | Typical range ⓘ | Where it sits ⓘ |
|---|---|---|---|---|
| SLT | 1,046 listings | $27,689 | $24K–$31K | |
| Denali | 476 listings | $33,791 | $29K–$41K | |
| SLE | 211 listings | $23,900 | $20K–$27K |
National data; Wyoming 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 Sierra is $28,218 (July 2026) — up 13.0% from $24,969 in March 2026.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| July 2026 | $28,218 | $23K–$33K | 422 |
| June 2026 | $28,092 | $23K–$34K | 312 |
| May 2026 | $25,944 | $22K–$34K | 92 |
| April 2026 | $25,999 | $22K–$32K | 114 |
| March 2026 | $24,969 | $22K–$32K | 108 |
2018 Gmc Sierra inventory across the U.S.
Keep exploring Sierra prices
2018 Gmc Sierra · $29,673 typical · 6 listingsOther Gmc Sierra years
Live 2018 Gmc Sierra listings, priced by VIN
Every VIN links to a full market report: decode, active listings and the local price band. Shop 2017–2019 Gmc Sierra listings on VehiSales →.
More 2018 Gmc prices
Frequently asked questions
Why do 2018 Gmc Sierra prices range from $24,256 to $41,061 in Wyoming?
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 $26,672 and $29,498 — see the mileage and trim breakdowns above for where a specific vehicle lands.
How much should mileage change the price of a 2018 Gmc Sierra?
Expect roughly $500 less for every 10,000 miles on the odometer. A 60K-mile example should cost about $1,500 less than a 30K-mile one of the same trim — check the fair-price-by-mileage table above for your band.
Do Gmc Sierra prices in Wyoming differ from the rest of the country?
Yes. The average in Wyoming is $29,673, which is $902 above the national average of $28,771. Local supply, demand and transport costs all play a part.
How many 2018 Gmc Sierra are for sale in Wyoming right now?
6 in total, nearly all pre-owned. Counts refresh daily from live dealer inventory.
How we calculate these prices
We track 6 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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