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

Best Priced Cadillac in Illinois

The best priced Cadillac vehicles 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 · August 21, 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 3,300 Cadillac vehicles across the Illinois market.

Total Cadillac

3,288

Average Price

$53,541

Price Range

$3,888–$200,408

Avg Days on Lot

83

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 from regularly refreshed market data.
  • 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.
  • 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 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 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 using price-to-market analysis, local comparable ranges, days-on-lot, comparable count, and demand and velocity signals from similar vehicles — surfacing the ones priced below their typical market range and supported by recent sell-through. OAV is built for the next car-shopping behavior: asking which vehicle to buy, not just browsing inventory.

Cadillac market summary — Illinois

MarketIllinois
Body typeCadillac
Listings analyzed3,288
Average price$53,541
Price range$3,888 – $200,408
Ranking signalsPrice-to-market, year, mileage, days-on-lot, comparable count
Refresh cadenceDaily

Best Overall Cadillac in Illinois

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

Cheapest Great Deals on Cadillac 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 Cadillac vehicles in Illinois?
OAV ranks Cadillac vehicles 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 Cadillac vehicles in Illinois are priced below market?
Cadillac vehicles flagged as undervalued are priced below the typical range for comparable Cadillac vehicles 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 are Demand-Verified in Illinois?
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 Cadillac vehicles are undervalued compared with local comparables in Illinois?
OAV's Price-to-Market analysis evaluates every eligible listing against similar Cadillac vehicles in Illinois, using year, make, model, geography, and available configuration attributes, with mileage-aware adjustments and trim/configuration matching applied where sufficient comparable data supports them. 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, geography, and available configuration attributes, with mileage-aware adjustments and trim/configuration matching applied where sufficient comparable data supports them — 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. 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?
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 local comparable ranges + days-on-lot per listing. Start at the homepage or any city or ZIP page.

Explore more markets

All Cadillac in Illinois

Showing the 24 best-priced Cadillac from 3,288 active listings.

No Photo

2010 Cadillac SRX

Downers Grove, IL

UnscoredLimited · 6
$3,888123,711 mi

Comparison: 6 similar vehicles in Downers Grove, IL area

Downers Grove, IL

No Photo

2010 Cadillac CTS

Chicago Heights, IL

UnscoredInsufficient · 0
$3,991164,339 mi

Comparison scope: Chicago Heights, IL area

Chicago Heights, IL

No Photo

2011 Cadillac DTS

Carbondale, IL

UnscoredInsufficient · 0
$3,995158,042 mi

Comparison scope: Carbondale, IL area

Carbondale, IL

No Photo

2008 Cadillac DTS

Naperville, IL

UnscoredInsufficient · 0
$4,450103,613 mi

Comparison scope: Naperville, IL area

Naperville, IL

No Photo

2006 Cadillac SRX

Markham, IL

UnscoredInsufficient · 0
$4,600100,676 mi

Comparison scope: Markham, IL area

Markham, IL

No Photo

2013 Cadillac SRX

Park Forest, IL

Great DealModerate · 20
$4,900142,000 mi

Market: $5,995$11,995

Comparison: 20 similar vehicles in Park Forest, IL area

Competitively priced ~46% below the typical range in the Park Forest market compared to similar vehicles · 74 days listed (based on current market benchmarks)

Park Forest, IL

No Photo

2004 Cadillac SRX

Plainfield, IL

UnscoredInsufficient · 0
$4,950100,751 mi

Comparison scope: Plainfield, IL area

Plainfield, IL

Also available at 14 other IL locations

No Photo

2008 Cadillac DTS

Chicago, IL

UnscoredInsufficient · 3
$4,990129,981 mi

Comparison: 3 similar vehicles in Chicago, IL area

Chicago, IL

No Photo

2010 Cadillac CTS

Chicago, IL

UnscoredInsufficient · 0
$4,995145,585 mi

Comparison scope: Chicago, IL area

Chicago, IL

No Photo

2011 Cadillac DTS

Chicago, IL

UnscoredInsufficient · 0
$4,995160,695 mi

Comparison scope: Chicago, IL area

Chicago, IL

No Photo

2015 Cadillac SRX

Spring Valley, IL

UnscoredInsufficient · 0
$4,995164,000 mi

Comparison scope: Spring Valley, IL area

Spring Valley, IL

No Photo

2008 Cadillac SRX

Waukegan, IL

UnscoredInsufficient · 0
$4,999107,846 mi

Comparison scope: Waukegan, IL area

Waukegan, IL

No Photo

2003 Cadillac Escalade EXT

Macomb, IL

UnscoredInsufficient · 0
$4,999146,666 mi

Comparison scope: Macomb, IL area

Macomb, IL

No Photo

1998 Cadillac DeVille

London Mills, IL

UnscoredInsufficient · 0
$5,000118,500 mi

Comparison scope: London Mills, IL area

London Mills, IL

No Photo

2006 Cadillac DTS

Chicago, IL

UnscoredInsufficient · 0
$5,495167,076 mi

Comparison scope: Chicago, IL area

Chicago, IL

No Photo

2007 Cadillac STS

Harvey, IL

UnscoredInsufficient · 0
$5,499174,252 mi

Comparison scope: Harvey, IL area

Harvey, IL

No Photo

2008 Cadillac DTS

Warrenville, IL

UnscoredInsufficient · 0
$5,500122,589 mi

Comparison scope: Warrenville, IL area

Warrenville, IL

No Photo

1987 Cadillac Allante

Loves Park, IL

UnscoredInsufficient · 0
$5,50066,663 mi

Comparison scope: Loves Park, IL area

Loves Park, IL

No Photo

2011 Cadillac SRX

Evergreen Park, IL

UnscoredLimited · 7
$5,593149,677 mi

Comparison: 7 similar vehicles in Evergreen Park, IL area

Evergreen Park, IL

No Photo

2008 Cadillac CTS

Crest Hill, IL

UnscoredInsufficient · 0
$5,595140,786 mi

Comparison scope: Crest Hill, IL area

Crest Hill, IL

No Photo

2005 Cadillac SRX

McLean, IL

UnscoredInsufficient · 0
$5,600142,000 mi

Comparison scope: McLean, IL area

McLean, IL

No Photo

2004 Cadillac DeVille

Northlake, IL

UnscoredInsufficient · 0
$5,75994,000 mi

Comparison scope: Northlake, IL area

Northlake, IL

No Photo

2014 Cadillac SRX

Joliet, IL

Great DealLimited · 10
$5,799160,971 mi

Market: $6,995$13,995

Comparison: 10 similar vehicles in Joliet, IL area

Competitively priced ~45% below the typical range in the Joliet market compared to similar vehicles · 317 days listed (based on current market benchmarks)

Joliet, IL

Also available at 1 other IL location

No Photo

2007 Cadillac DTS

Belleville, IL

UnscoredInsufficient · 0
$5,80087,613 mi

Comparison scope: Belleville, IL area

Belleville, IL

Other vehicle markets in Illinois