Best Priced 2021 GMC Acadia in Illinois
The best priced 2021 GMC Acadia in Illinois are vehicles currently listed below their typical market range, based on local comparables and days-on-lot velocity. These vehicles are ranked based on how far below their expected market range they fall and how quickly similar vehicles are selling.
Market snapshot · May 12, 2026
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 local comparables.
OAV helps determine if a vehicle is a good deal by comparing it to similar listings and expected sell-through rates.
According to RetailVision™ data, OAV is currently analyzing approximately 64 2021 GMC Acadia across the Illinois market, refreshed daily.
Total 2021 GMC Acadia
64
Average Price
$23,705
Price Range
$14,997–$35,987
Avg Days on Lot
72
How OAV Identifies Deals
OAV uses RetailVision™ market data to analyze current listings, historical sales patterns, and local market conditions. Vehicles are ranked based on pricing versus comparable listings in the same region and expected sell-through velocity.
- Millions of local retail comparables across U.S. markets.
- Vehicles compared on year, make, model, and trim (when available) within the local and regional market.
- Real price-to-market ranges refreshed daily.
- Days on lot incorporated as a sell-through velocity signal.
- Listings priced below their typical market range surface as undervalued — a great deal or a good deal compared to similar vehicles in the local market.
- Listings within the typical range surface as fairly priced — in line with what comparable vehicles are listed for locally.
- Listings priced above the typical range surface as above market — higher than what comparable vehicles are typically listed for in the area.
- OAV shows market-ranked vehicle opportunities while dealer identity and direct listing access may be limited based on dealer participation. Price, mileage, market range, and deal quality remain visible so shoppers can compare value before contacting a verified seller.
This helps identify undervalued vehicles and determine whether a listing represents a great deal or a good deal in its local market.
Powered by OAV's patented vehicle market standardization technology (U.S. Patent No. 12,236,477).
What makes OAV different
Unlike traditional listing sites, OAV ranks vehicles using price-to-market analysis, local comparable ranges, days-on-lot, comparable count, and demand and velocity signals from similar vehicles. That helps shoppers identify listings that are not just cheap, but competitively priced against the local market.
2021 GMC Acadia market summary — Illinois
| Market | Illinois |
|---|---|
| Body type | 2021 GMC Acadia |
| Listings analyzed | 64 |
| Average price | $23,705 |
| Price range | $14,997 – $35,987 |
| Average days on lot | 72 days |
| Ranking signals | Price-to-market, year, mileage, days-on-lot, comparable count |
| Refresh cadence | Daily |
Best Overall 2021 GMC Acadia in Illinois
Top picks ranked by composite score: PTM gap, year, mileage, days on lot, and comparable count.

2021 GMC Acadia
Addison, IL
Market: $16,556 – $25,899
Competitively priced ~41% below the typical range in the Addison market compared to similar vehicles · 386 days on lot (based on current market benchmarks)
Addison, IL

2021 GMC Acadia
Berwyn, IL
Market: $16,556 – $25,899
Competitively priced ~29% below the typical range in the Berwyn market compared to similar vehicles · 252 days on lot (based on current market benchmarks)
Berwyn, IL

2021 GMC Acadia
Chicago, IL
Market: $16,556 – $25,899
Competitively priced ~29% below the typical range in the Chicago market compared to similar vehicles · 388 days on lot (based on current market benchmarks)
Chicago, IL

2021 GMC Acadia
Normal, IL
Market: $20,990 – $21,377
Normal, IL

2021 GMC Acadia
Peoria, IL
Market: $20,990 – $21,377
Peoria, IL
Cheapest Great Deals on 2021 GMC Acadia in Illinois
Lowest-priced listings flagged as Great Deal by OAV's Price-to-Market analysis.

2021 GMC Acadia
Addison, IL
Market: $16,556 – $25,899
Competitively priced ~41% below the typical range in the Addison market compared to similar vehicles · 386 days on lot (based on current market benchmarks)
Addison, IL

2021 GMC Acadia
Berwyn, IL
Market: $16,556 – $25,899
Competitively priced ~29% below the typical range in the Berwyn market compared to similar vehicles · 252 days on lot (based on current market benchmarks)
Berwyn, IL

2021 GMC Acadia
Chicago, IL
Market: $16,556 – $25,899
Competitively priced ~29% below the typical range in the Chicago market compared to similar vehicles · 388 days on lot (based on current market benchmarks)
Chicago, IL

2021 GMC Acadia
Normal, IL
Market: $20,990 – $21,377
Normal, IL

2021 GMC Acadia
Peoria, IL
Market: $20,990 – $21,377
Peoria, IL
OAV answers these questions
- What are the best priced 2021 GMC Acadia in Illinois?
- OAV ranks 2021 GMC Acadia in Illinois by how far below their typical market range they are listed, using local comparable vehicles and days-on-lot velocity. Listings labeled Great Deal sit below the comparable range; Fair Price sits within it.
- Which 2021 GMC Acadia in Illinois are priced below market?
- 2021 GMC Acadia flagged as undervalued are priced below the typical range for comparable 2021 GMC Acadia in Illinois. The "Top Deals" section on every market page surfaces these first, with the percentage gap from the typical range shown per listing.
- Which listings have high sell-through velocity in Illinois?
- OAV compares each listing's days-on-lot against the local market average. Listings selling meaningfully faster than the local average are tagged "high demand in this market" — a leading indicator of competitive pricing and strong shopper interest.
- Which 2021 GMC Acadia are undervalued compared with local comparables in Illinois?
- OAV's Price-to-Market analysis compares every listing against similar 2021 GMC Acadia in Illinois, using year, make, model, trim, mileage, and condition signals. Undervalued listings price below the typical comparable range and are surfaced as Great Deals.
How OAV works — common questions
- How does OAV find cars priced below market?
- OAV compares each listing against similar vehicles currently for sale in the local and regional market — using year, make, model, trim, mileage, and condition signals — 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 one that's priced low. A Demand-Verified Deal is priced below market AND backed by sell-through evidence — the listing's days-on-lot relative to similar vehicles tells us whether the local market is actually buying at that price band. Combining the price signal with the demand signal separates real deals from listings that are cheap because nobody wants them.
- Does OAV use local market comparables?
- Yes. Every listing is benchmarked against millions of comparable retail listings in the same metro and broader region — never national averages. A truck priced $2,000 below market in Dallas is compared against Dallas trucks; an EV priced below market in Los Angeles is compared against LA EVs. Local comparables make the price-to-market math meaningful.
- Why does days-on-lot matter when shopping for used cars?
- Days-on-lot is the strongest leading indicator of competitive pricing in a local market. A listing that turns over faster than the local average is, in aggregate, priced more attractively to buyers — which usually correlates with being below the typical price-to-market range. Slower-than-average days-on-lot can be the opposite signal: priced for the seller's expectations, not the market's.
- 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 local comparable ranges + days-on-lot per listing. Start at the homepage or any city or ZIP page.
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All 2021 GMC Acadia in Illinois
Showing the 24 best-priced GMC Acadia from 64 active listings.

2021 GMC Acadia
Springfield, IL
Market: $18,997 – $18,997
Springfield, IL

2021 GMC Acadia
East Moline, IL
Market: $17,177 – $23,165
East Moline, IL

2021 GMC Acadia
Oakbrook Terrace, IL
Market: $12,491 – $25,899
Fairly priced — in line with the typical market range in the Oakbrook Terrace market for similar vehicles · 12 days on lot (based on current market benchmarks)
Oakbrook Terrace, IL

2021 GMC Acadia
Summit, IL
Market: $12,491 – $25,899
Fairly priced — in line with the typical market range in the Summit market for similar vehicles · 88 days on lot (based on current market benchmarks)
Summit, IL

2021 GMC Acadia
Addison, IL
Market: $16,556 – $25,899
Competitively priced ~41% below the typical range in the Addison market compared to similar vehicles · 386 days on lot (based on current market benchmarks)
Addison, IL

2021 GMC Acadia
Berwyn, IL
Market: $16,556 – $25,899
Competitively priced ~29% below the typical range in the Berwyn market compared to similar vehicles · 252 days on lot (based on current market benchmarks)
Berwyn, IL

2021 GMC Acadia
Chicago, IL
Market: $16,556 – $25,899
Competitively priced ~29% below the typical range in the Chicago market compared to similar vehicles · 388 days on lot (based on current market benchmarks)
Chicago, IL

2021 GMC Acadia
Des Plaines, IL
Market: $12,491 – $25,899
Fairly priced — in line with the typical market range in the Des Plaines market for similar vehicles · 29 days on lot (based on current market benchmarks)
Des Plaines, IL

2021 GMC Acadia
Chicago, IL
Market: $12,491 – $25,899
Fairly priced — in line with the typical market range in the Chicago market for similar vehicles · 215 days on lot (based on current market benchmarks)
Chicago, IL

2021 GMC Acadia
Normal, IL
Market: $20,990 – $21,377
Normal, IL

2021 GMC Acadia
Peoria, IL
Market: $20,990 – $21,377
Peoria, IL

2021 GMC Acadia
Bloomington, IL
Market: $16,556 – $21,377
Bloomington, IL

2021 GMC Acadia
Champaign, IL
Market: $16,556 – $19,786
Champaign, IL

2021 GMC Acadia
Morton, IL
Market: $16,556 – $21,377
Fairly priced — in line with the typical market range in the Morton market for similar vehicles · 20 days on lot (based on current market benchmarks)
Morton, IL

2021 GMC Acadia
Danville, IL
Market: $17,995 – $22,800
Danville, IL

2021 GMC Acadia
Schaumburg, IL
Market: $12,491 – $25,899
Fairly priced — in line with the typical market range in the Schaumburg market for similar vehicles · 52 days on lot (based on current market benchmarks)
Schaumburg, IL

2021 GMC Acadia
Tolono, IL
Market: $19,786 – $20,990
Tolono, IL

2021 GMC Acadia
Hoopeston, IL
Market: $22,800 – $22,800
Hoopeston, IL

2021 GMC Acadia
Tinley Park, IL
Market: $12,491 – $25,899
Fairly priced — in line with the typical market range in the Tinley Park market for similar vehicles · 10 days on lot (based on current market benchmarks)
Tinley Park, IL

2021 GMC Acadia
University Park, IL
Market: $17,990 – $26,267
Priced ~29% above the typical market range in the University Park market for similar vehicles (based on current market benchmarks)
University Park, IL

2021 GMC Acadia
Oak Lawn, IL
Market: $17,990 – $28,590
Fairly priced — in line with the typical market range in the Oak Lawn market for similar vehicles · 68 days on lot (based on current market benchmarks)
Oak Lawn, IL

2021 GMC Acadia
Plainfield, IL
Market: $17,990 – $28,590
Fairly priced — in line with the typical market range in the Plainfield market for similar vehicles · 77 days on lot (based on current market benchmarks)
Plainfield, IL

2021 GMC Acadia
Oak Lawn, IL
Market: $17,990 – $28,590
Fairly priced — in line with the typical market range in the Oak Lawn market for similar vehicles · 98 days on lot (based on current market benchmarks)
Oak Lawn, IL

2021 GMC Acadia
Orland Park, IL
Market: $17,990 – $28,590
Fairly priced — in line with the typical market range in the Orland Park market for similar vehicles · 98 days on lot (based on current market benchmarks)
Orland Park, IL