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

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.

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).

Learn how OAV identifies Demand-Verified Deals™

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

MarketIllinois
Body type2021 GMC Acadia
Listings analyzed64
Average price$23,705
Price range$14,997 – $35,987
Average days on lot72 days
Ranking signalsPrice-to-market, year, mileage, days-on-lot, comparable count
Refresh cadenceDaily

Best Overall 2021 GMC Acadia in Illinois

Top picks ranked by composite score: PTM gap, year, mileage, days on lot, and comparable count.

Cheapest Great Deals on 2021 GMC Acadia in Illinois

Lowest-priced listings flagged as Great Deal by OAV's Price-to-Market analysis.

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.

Explore more markets

All 2021 GMC Acadia in Illinois

Showing the 24 best-priced GMC Acadia from 64 active listings.

2021 GMC Acadia

2021 GMC Acadia

Springfield, IL

Unscored
$18,99780,507 mi

Market: $18,997$18,997

Springfield, IL

2021 GMC Acadia

2021 GMC Acadia

East Moline, IL

Unscored
$18,90088,581 mi

Market: $17,177$23,165

East Moline, IL

2021 GMC Acadia

2021 GMC Acadia

Oakbrook Terrace, IL

Fair Price
$20,48967,787 mi

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

2021 GMC Acadia

Summit, IL

Fair Price
$21,84537,629 mi

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

2021 GMC Acadia

Addison, IL

Great Deal
$12,491136,235 mi

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

2021 GMC Acadia

Berwyn, IL

Great Deal
$14,997136,235 mi

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

2021 GMC Acadia

Chicago, IL

Great Deal
$14,997136,235 mi

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

2021 GMC Acadia

Des Plaines, IL

Fair Price
$19,98977,652 mi

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

2021 GMC Acadia

Chicago, IL

Fair Price
$16,556102,642 mi

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

2021 GMC Acadia

Normal, IL

Unscored
$16,556102,642 mi

Market: $20,990$21,377

Normal, IL

2021 GMC Acadia

2021 GMC Acadia

Peoria, IL

Unscored
$16,556102,642 mi

Market: $20,990$21,377

Peoria, IL

2021 GMC Acadia

2021 GMC Acadia

Bloomington, IL

Unscored
$20,99057,725 mi

Market: $16,556$21,377

Bloomington, IL

2021 GMC Acadia

2021 GMC Acadia

Champaign, IL

Unscored
$20,99057,725 mi

Market: $16,556$19,786

Champaign, IL

2021 GMC Acadia

2021 GMC Acadia

Morton, IL

Fair Price
$20,99057,725 mi

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

2021 GMC Acadia

Danville, IL

Unscored
$19,78697,782 mi

Market: $17,995$22,800

Danville, IL

2021 GMC Acadia

2021 GMC Acadia

Schaumburg, IL

Fair Price
$23,99857,524 mi

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

2021 GMC Acadia

Tolono, IL

Unscored
$17,99592,763 mi

Market: $19,786$20,990

Tolono, IL

2021 GMC Acadia

2021 GMC Acadia

Hoopeston, IL

Unscored
$22,80074,912 mi

Market: $22,800$22,800

Hoopeston, IL

2021 GMC Acadia

2021 GMC Acadia

Tinley Park, IL

Fair Price
$19,75796,853 mi

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

2021 GMC Acadia

University Park, IL

Overpriced
$28,59059,319 mi

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

2021 GMC Acadia

Oak Lawn, IL

Fair Price
$24,86153,899 mi

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

2021 GMC Acadia

Plainfield, IL

Fair Price
$24,86153,899 mi

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

2021 GMC Acadia

Oak Lawn, IL

Fair Price
$19,79595,165 mi

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

2021 GMC Acadia

Orland Park, IL

Fair Price
$19,79595,165 mi

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

Other vehicle markets in Illinois