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U.S. Patent No. 12,236,477 — Patented Automotive Data Standardization Technology
OAV

Best Priced GMC in Mattoon, IL

OAV.io analyzes millions of vehicle listings using RetailVision™ market data to identify vehicles priced below expected market ranges based on year, make, model, trim (when available), and comparable listings.

OAV helps determine if a vehicle is a good deal by comparing its price to similar listings within its supported comparable range. Sell-through is separate Demand-Verified evidence, not part of the price verdict.

The best priced GMC vehicles in Mattoon, IL are vehicles currently listed below their typical market range, based on comparable listings. These vehicles are ranked by how far below their expected market range they fall; days-on-lot is shown as a separate demand signal.

Market snapshot · September 13, 2026

What makes OAV different from Cars.com, AutoTrader, and Edmunds

Cars.com, AutoTrader, and Edmunds are vehicle-listing marketplaces where shoppers browse inventory. OAV is the answer-engine layer above the marketplace: it ranks vehicles by price-to-market — asking price against comparable listings — and surfaces the ones priced below their typical market range. Days-on-lot, comparable count, and sell-through from similar vehicles are shown alongside as separate demand evidence, not as ranking inputs. OAV is built for the next car-shopping behavior: asking which vehicle to buy, not just browsing inventory.

GMC vehicles market summary — Mattoon, IL

MarketMattoon, IL
Body typeGMC vehicles
Listings analyzed100
Average price$54,530
Price range$3,700 – $110,340
Price-to-Market basisAsking price vs comparable listings (same make/model, year window, trim where available). Days-on-lot and sell-through are separate demand signals, not verdict inputs.
Refresh cadenceDaily

How OAV Identifies Deals

OAV uses RetailVision™ market data to analyze current listings, historical sales patterns, and local market conditions. Vehicles are ranked by how their asking price compares to comparable listings; days-on-lot and sell-through are shown as separate demand signals, never inputs to the price-to-market ranking.

  • Millions of retail comparables across U.S. markets.
  • Vehicles compared on year, make, model, and trim (when available).
  • Real price-to-market ranges from regularly refreshed market data.
  • Days on lot shown as a separate demand signal (Demand-Verified), not a price-to-market ranking input.
  • Listings priced below their typical market range surface as undervalued — a great deal compared to similar vehicles currently for sale.
  • Listings within the typical range surface as fairly priced — in line with what comparable vehicles are typically listed for.
  • Listings priced above the typical range surface as above market — higher than what comparable vehicles are typically listed for.
  • Dealer business information is public on every profile. OAV-claimed dealers manage their profile directly and route inquiries through OAV.

This helps identify undervalued vehicles and determine whether a listing represents a great deal relative to comparable listings.

Powered by OAV's patented vehicle market standardization technology (U.S. Patent No. 12,236,477).

Learn how OAV identifies Demand-Verified Deals™

How OAV works — common questions

How does OAV find cars priced below market?
OAV compares each listing against similar vehicles currently for sale — using year, make, model, geography, and available configuration attributes, with trim/configuration matching applied where sufficient comparable data supports it, and mileage is not used to select comparables or adjust comparable prices, but acts as a reliability check on used vehicles — OAV withholds a verdict when mileage is very high or unreliable, or when a lower price is better explained by higher-than-typical mileage than by a genuine market discount — to compute a price-to-market range. Listings priced below the bottom of their typical range are flagged as undervalued, surfaced as Great Deals, and shown first in every market view.
What makes a Demand-Verified Deal different from a cheap listing?
A cheap listing is just priced low. The Demand-Verified badge is sell-through evidence: the listing's similar-vehicle sold cohort is moving faster than its market baseline, and this listing hasn't aged beyond that cohort's typical selling window — it is separate from OAV's price verdict. A Demand-Verified Deal combines both: the Demand-Verified badge AND a price below the comparable market range. The price signal says it's cheap; the demand signal says the market is actually buying at that price.
Does OAV use local market comparables?
Yes — local-first. OAV starts with comparable retail listings in the same metro and broader region, and widens the comparison set only when local inventory is too thin to support a reliable range. A truck in Dallas is compared against Dallas-area trucks where the local market supports it; an EV in Los Angeles against LA-area EVs. This local-first approach makes the price-to-market math meaningful.
Why does days-on-lot matter when shopping for used cars?
How long a vehicle sits helps show whether the market is actually buying. OAV compares a listing's days-on-lot to the sold cohort of similar vehicles: when comparable vehicles have been selling quickly and this listing is still within that cohort's typical selling window, it corroborates real demand. A listing sitting far longer than its cohort typically takes to sell is the opposite signal — worth confirming its history, condition, and price before assuming it's a deal.
Can OAV help find trucks, SUVs, or EVs priced below market?
Yes — body-type-specific market views are available for trucks, SUVs, sedans, and EVs in every major U.S. metro and ZIP code. Each view ranks listings by how far below the typical range they're priced, includes Demand-Verified Deals where sell-through evidence supports the label, and shows comparable ranges + days-on-lot per listing. Start at the homepage or any city or ZIP page.

According to RetailVision™ data, OAV is currently analyzing approximately 100 GMC vehicles across the Mattoon, IL market.

GMC Listings

100

Average Price

$54,530

Price Range (excl. >$200k outliers)

$3,700–$110,340

Average price and price range exclude listings priced above $200,000 to keep placeholder / upfit outliers out of the reported market range; the GMC listings count includes them. Each listing shows how long it's been listed compared to local same-make/model vehicles.

GMC Market in Mattoon, IL

Dealers in Mattoon have 100 GMC vehicles listed at an average price of $54,530, ranging from $3,700 to $110,340.

OAV answers these questions

What are the best priced GMC vehicles in Mattoon, IL?
OAV ranks GMC vehicles in Mattoon, IL by how far below their typical market range they are listed, using comparable listings; days-on-lot is shown as a separate demand signal, not a ranking input. Great Deal means priced below the comparable-range floor by a meaningful margin (OAV's minimum-gap rule); a listing below the floor by less than that margin — or within the range — is Fair Price.
Which GMC vehicles in Mattoon, IL are priced below market?
GMC vehicles flagged as undervalued are priced below the typical range for comparable GMC vehicles in Mattoon, IL. The "Top Deals" section on every market page surfaces these first, with the percentage gap from the typical range shown per listing.
Which listings are Demand-Verified in Mattoon, IL?
A listing is Demand-Verified when the matched sold cohort of similar vehicles is moving faster than its market baseline, the cohort meets minimum-sample and freshness requirements, and this specific listing has not aged beyond the cohort's typical selling window. It is sell-through evidence about demand, and is separate from OAV's price-to-market verdict.
Which GMC vehicles are undervalued compared with comparable listings in Mattoon, IL?
OAV's Price-to-Market analysis evaluates every eligible listing against similar GMC vehicles in Mattoon, IL, using year, make, model, geography, and available configuration attributes, with trim/configuration matching applied where sufficient comparable data supports it, and mileage is not used to select comparables or adjust comparable prices, but acts as a reliability check on used vehicles — OAV withholds a verdict when mileage is very high or unreliable, or when a lower price is better explained by higher-than-typical mileage than by a genuine market discount. Undervalued listings price below the typical comparable range and are surfaced as Great Deals.

Popular GMC Models in Mattoon

Sierra 1500(41)
Acadia(14)
Terrain(11)
Sierra 2500HD(10)
Sierra 3500HD(5)
Canyon(5)
Yukon XL(3)
HUMMER EV(3)

Featured GMC in Mattoon

No Photo

2004 GMC Envoy SLE

Mattoon, IL

UnscoredInsufficient · 0
$3,700202,653 mi

Mattoon, IL

No Photo

2011 GMC Savana Cargo Base

Mattoon, IL

UnscoredInsufficient · 0
$5,955213,111 mi

Mattoon, IL

No Photo

2012 GMC Acadia Denali

Mattoon, IL

UnscoredInsufficient · 3
$6,995167,036 mi

Comparison: 3 similar vehicles

Mattoon, IL

No Photo

2014 GMC Terrain SLT-1

Mattoon, IL

UnscoredInsufficient · 0
$7,955157,979 mi

Mattoon, IL

No Photo

2013 GMC Acadia SLT1

Mattoon, IL

UnscoredInsufficient · 0
$8,955163,511 mi

Mattoon, IL

No Photo

2018 GMC Terrain SLT

Mattoon, IL

UnscoredInsufficient · 0
$14,288107,318 mi

Mattoon, IL

No Photo

2014 GMC Terrain Denali

Mattoon, IL

UnscoredInsufficient · 0
$14,47780,502 mi

Mattoon, IL

No Photo

2020 GMC Terrain SLT

Mattoon, IL

UnscoredLimited · 9
$15,412125,768 mi

Comparison: 9 similar vehicles

Mattoon, IL

No Photo

2021 GMC Acadia SLE

Mattoon, IL

UnscoredInsufficient · 4
$19,79883,028 mi

Comparison: 4 similar vehicles

Mattoon, IL

No Photo

2022 GMC Terrain SLE

Mattoon, IL

UnscoredLimited · 9
$23,41248,329 mi

Comparison: 9 similar vehicles

Mattoon, IL

No Photo

2024 GMC Terrain SLE

Mattoon, IL

Fair PriceRobust · 50
$23,41257,404 mi

Market: $22,987$30,402

Comparison: 50 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 28 days listed (based on current market benchmarks)

Mattoon, IL

No Photo

2015 GMC Sierra 1500 Denali

Mattoon, IL

UnscoredInsufficient · 0
$25,298111,377 mi

Mattoon, IL

No Photo

2016 GMC Sierra 1500 Denali

Mattoon, IL

UnscoredInsufficient · 0
$26,91294,624 mi

Mattoon, IL

No Photo

2021 GMC Sierra 1500 SLE

Mattoon, IL

UnscoredInsufficient · 0
$29,662104,780 mi

Mattoon, IL

No Photo

2027 GMC Terrain Elevation

Mattoon, IL

UnscoredInsufficient · 3
$35,740Mileage not verified

Comparison: 3 similar vehicles

Mattoon, IL

No Photo

2025 GMC Sierra 1500 Pro

Mattoon, IL

UnscoredInsufficient · 3
$36,57711,778 mi

Comparison: 3 similar vehicles

Mattoon, IL

No Photo

2024 GMC Canyon AT4

Mattoon, IL

Great DealLimited · 17
$38,97732,910 mi

Market: $40,977$43,798

Comparison: 17 similar vehicles

Competitively priced ~5% below the typical range compared to similar vehicles · 46 days listed (based on current market benchmarks)

Mattoon, IL

No Photo

2023 GMC Acadia Denali

Mattoon, IL

UnscoredLimited · 9
$38,9778,970 mi

Comparison: 9 similar vehicles

Mattoon, IL

No Photo

2027 GMC Terrain Elevation

Mattoon, IL

UnscoredInsufficient · 3
$39,115Mileage not verified

Comparison: 3 similar vehicles

Mattoon, IL

No Photo

2026 GMC Sierra 1500 Pro

Mattoon, IL

UnscoredLimited · 8
$39,468Mileage not verified

Comparison: 8 similar vehicles

Mattoon, IL

No Photo

2026 GMC Sierra 1500 Pro

Mattoon, IL

UnscoredLimited · 8
$40,407Mileage not verified

Comparison: 8 similar vehicles

Mattoon, IL

No Photo

2026 GMC Terrain AT4

Mattoon, IL

UnscoredLimited · 9
$40,500Mileage not verified

Comparison: 9 similar vehicles

Mattoon, IL

No Photo

2024 GMC Canyon AT4

Mattoon, IL

Fair PriceLimited · 19
$40,9777,799 mi

Market: $38,977$43,798

Comparison: 19 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 22 days listed (based on current market benchmarks)

Mattoon, IL

No Photo

2021 GMC Sierra 1500 AT4

Mattoon, IL

UnscoredInsufficient · 0
$41,41257,821 mi

Mattoon, IL

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