2018 GMC Terrain SLE
Vehicle Details
SLE
Westfield, IN 46074
Is this 2018 GMC Terrain SLE a good deal?
OAV verdict: Fair Price
Why: Listed at $16,660, comparable market range $7,950–$17,195, based on 29 comparable listings. Days on lot: 93 days (market average 63 days).
Market price position
$16,660 · within market range
- Comparable range
- $7,950 – $17,195
- vs. market
- $8,710 above low · $535 below high
- Comparable vehicles
- 29
Market Retail Price (MRP™)
$12,573This vehicle $16,660 · $4,087 (33%) above MRP
MRP™ is the midpoint of the comparable market range — the representative price the market is asking for similar vehicles. How MRP works.
True Retail Value (TRV™)
$17,641This vehicle $16,660 · $981 (6%) below TRV
TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-08-04) — an estimate, not an appraisal. How TRV works.
Comparable vehicles nationally have sold faster than the market baseline, but this listing has been available longer than the cohort’s typical sell-time (about 10–42 days).
What does Demand-Verified mean?
Market Breakdown
Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges are rebuilt from the market snapshot shown above.
Unlimited Motors
Westfield, IN
OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.
Request availability and out-the-door price
OAV will route your inquiry to Unlimited Motors for current availability of this 2018 GMC Terrain SLE and an out-the-door price quote (taxes, fees, addons included).
OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.
About This 2018 GMC Terrain
Listing updated: Aug 4, 2026Listed by an independent dealer in Westfield, IN · On lot for 93 days · VIN verifiable at NHTSA
This used 2018 GMC Terrain SLE is listed at $16,660 by unlimited motors in Westfield, IN 46074. It has 44,388 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Gray. It features a FWD drivetrain with a 1.5L I4 engine and Automatic transmission.
OAV's AI-powered Price-to-Market analysis rates this vehicle as Fair Price — priced at market value. Based on 29 comparable listings matched to this vehicle, the estimated market range is $7,950 to $17,195. These comparisons match year, make, and model and may currently span trims and configurations (trim-level matching is rolling out).
This vehicle has been on the lot for 93 days.
Analysis powered by OAV's patented inventory standardization technology (U.S. Patent No. 12,236,477).
Market context
This listing is part of OAV's broader Westfield, IN suvs market analysis. OAV compares vehicles using local and regional price-to-market ranges, days-on-lot, comparable count, and demand signals where available.
How this deal is rated
OAV compares this 2018 GMC Terrain against similar vehicles currently available in the local and regional market — same make, model, and year range (currently across available trims and configurations; trim-level matching is rolling out), filtered for comparable mileage. Based on where this listing falls in that comparable set, it is rated:
- Great Deal — priced below the typical range for comparable vehicles.
- Fair Price — priced within the expected range for comparable vehicles.
- Overpriced — priced above the typical range for comparable vehicles.
Listings show OAV's PTM-derived deal quality and live market context. OAV-claimed dealers manage their listing profile and route buyer inquiries directly. Paid OAV partners surface additional verification signals.
How this listing is verified
This vehicle listing was aggregated from an independent dealer in Westfield, IN, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 3GKALMEV4JL404175 can be independently verified via the U.S. Department of Transportation's NHTSA VIN decoder, and safety recalls at NHTSA's recall database.
Vehicle attributes (year, make, model, trim, mileage, location) are standardized using OAV's patented methodology (U.S. Patent No. 12,236,477), which normalizes naming conventions and deduplicates cross-listed inventory across the dealership network. Listing data is processed daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.
2018 GMC Terrain Market in IN
IN Market Listings
226
Average Price
$14,873
Price Range
$4,900–$31,465
Avg Days on Lot
63
Based on all 226 2016-2020 GMC Terrain listings in the IN market, the average asking price is $14,873. This listing at $16,660 is $1,787 above the broader IN average (12% above the IN average). This is a wider, all-trim comparison across IN; OAV's price verdict above uses the closer comparable set. Comparable prices in IN range from $4,900 to $31,465. Similar vehicles spend an average of 63 days on dealer lots in this market.
Similar GMC Terrain Listings in IN
8 similar listings shown (closest matches within ±2 model years) and ±30,000 miles (subject trim: SLE — compare trims below)
2019 GMC Terrain
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Carmel, IN
2020 GMC Terrain
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Spencer, IN
2018 GMC Terrain
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Winamac, IN
2020 GMC Terrain
SLE
Hobart, IN
2020 GMC Terrain
SLE
Westfield, IN
2019 GMC Terrain
SLE
Greenfield, IN
2020 GMC Terrain
SLE
Fort Wayne, IN
2019 GMC Terrain
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Greenfield, IN