Is the $18,978 price on this 2021 GMC Terrain a good deal?

OAV rates this as Fair Price because the asking price of $18,978 is within the typical market range for this vehicle.

What is the average price for a 2021 GMC Terrain in PA?

Based on 340 comparable listings in PA, the average asking price for a 2019-2023 GMC Terrain is $22,430, with prices ranging from $10,499 to $33,540.

How long does a 2021 GMC Terrain typically stay on dealer lots?

Comparable GMC Terrain listings in PA spend an average of 66 days on dealer lots.

Where is this 2021 GMC Terrain located?

This vehicle is listed in Shillington, PA 19607. VIN: 3GKALTEV0ML302158. Mileage: 55,338 miles.

What is the fair market price range for this 2021 GMC Terrain?

OAV's Price-to-Market analysis estimates the fair market range is $16,444 to $23,080, based on 43 comparable vehicles.

No Photo Available

Vehicle Details

VIN3GKALTEV0ML302158

TrimSLE

Exterior ColorSilver

Drivetrain4WD

Engine1.5L I4

TransmissionAutomatic

Fuel TypeUnleaded

Inventory Typeused

Days on Lot63

2021 GMC Terrain

SLE

Fair Price

$18,97855,338 mi

Shillington, PA 19607

Is this 2021 GMC Terrain SLE a good deal?

OAV verdict: Fair Price

Why: Listed at $18,978, comparable market range $16,444–$23,080, based on 43 comparable listings. Days on lot: 63 days (market average 66 days).

Market price position

$18,978 · within market range

$16,444comparable$23,080

Regional range: $16,444 – $23,080
vs. market: $2,534 above low · $4,102 below high
Comparable vehicles: 43

Market Retail Price (MRP™)

$19,762

This vehicle $18,978 · $784 (4%) below 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™)

$19,356

This vehicle $18,978 · $378 (2%) below TRV

TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-07-26) — an estimate, not an appraisal. How TRV works.

Demand-Verified· Backed by recent sales data

Similar vehicles recently sold in an estimated 12–53 days.

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.

Regional Range$16,444 – $23,080

Geoff Penske Gmc

Shillington, PA

OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.

View all vehicles from geoff penske gmc →

Request availability and out-the-door price

OAV will route your inquiry to Geoff Penske Gmc for current availability of this 2021 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 2021 GMC Terrain

Listing updated: Jul 26, 2026

Listed by a franchise dealer in Shillington, PA · On lot for 63 days · VIN verifiable at NHTSA

This used 2021 GMC Terrain SLE is listed at $18,978 by geoff penske gmc in Shillington, PA 19607. It has 55,338 miles on the odometer. The exterior color is Silver. It features a 4WD 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 43 similar vehicles in the Shillington market, the estimated market range is $16,444 to $23,080.

This vehicle has been on the lot for 63 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 Shillington, PA 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 2021 GMC Terrain against similar vehicles currently available in the local and regional market — same make, model, and year range, 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 a franchise dealer in Shillington, PA, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 3GKALTEV0ML302158 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.

2021 GMC Terrain Market in PA

Comparable Vehicles

340

Average Price

$22,430

Price Range

$10,499–$33,540

Avg Days on Lot

Based on 340 comparable 2019-2023 GMC Terrain listings in PA, the average asking price is $22,430. This listing at $18,978 is $3,452 below average (15% below market). Comparable prices in PA range from $10,499 to $33,540. Similar vehicles spend an average of 66 days on dealer lots in this market.