Is the $12,999 price on this 2021 GMC Terrain a good deal?

OAV rates this as a Great Deal because the asking price of $12,999 is below the typical market range for this vehicle.

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

Comparable GMC Terrain listings in PA spend an average of 69 days on dealer lots.

Where is this 2021 GMC Terrain located?

This vehicle is listed in Allentown, PA 18109. VIN: 3GKALPEV8ML334508. Mileage: 119,322 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 $17,444 to $20,000, based on 32 comparable listings matched to this vehicle.

2021 GMC Terrain SLT for Sale in Allentown, PA

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Vehicle Details

VIN3GKALPEV8ML334508

TrimSLT

Exterior ColorWhite

DrivetrainFWD

Engine1.5L I4

TransmissionAutomatic

Fuel TypeUnleaded

Inventory Typeused

Days on Lot87

SLT

Great Deal

$12,999119,322 mi

Allentown, PA 18109

Is this 2021 GMC Terrain SLT a good deal?

OAV verdict: Great Deal

Why: Listed at $12,999, comparable market range $17,444–$20,000, based on 32 comparable listings. Days on lot: 87 days (market average 69 days).

Market price position

$12,999 · $4,445 below market low

Comparable range: $17,444 – $20,000
vs. market low: — $4,445 (25% below)
Comparable vehicles: 32

Market Retail Price (MRP™)

$18,722

This vehicle $12,999 · $5,723 (31%) 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™)

$16,158

This vehicle $12,999 · $3,159 (20%) below TRV

TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-07-31) — an estimate, not an appraisal. How TRV works.

Demand-Verified· Backed by recent sales data

Similar vehicles recently sold in an estimated 20–79 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$17,444 – $20,000

Mts Motors

Allentown, PA

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

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Request availability and out-the-door price

OAV will route your inquiry to Mts Motors for current availability of this 2021 GMC Terrain SLT 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 31, 2026

Listed by an independent dealer in Allentown, PA · On lot for 87 days · VIN verifiable at NHTSA

This used 2021 GMC Terrain SLT is listed at $12,999 by mts motors in Allentown, PA 18109. It has 119,322 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is White. 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 a Great Deal — priced below market value. Based on 32 comparable listings matched to this vehicle, the estimated market range is $17,444 to $20,000. 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 87 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 Allentown, 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 (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 Allentown, PA, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 3GKALPEV8ML334508 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

PA Market Listings

337

Average Price

$22,392

Price Range

$10,499–$33,540

Avg Days on Lot

Based on all 337 2019-2023 GMC Terrain listings in the PA market, the average asking price is $22,392. This listing at $12,999 is $9,393 below the broader PA average (42% below the PA average). This is a wider, all-trim comparison across PA; OAV's price verdict above uses the closer comparable set. Comparable prices in PA range from $10,499 to $33,540. Similar vehicles spend an average of 69 days on dealer lots in this market.