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

Monthly Report · October 2026

Best New-Car Deals in Illinois — October 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 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.

A dated, archival ranking of the strongest new-vehicle deals in Illinois for October 2026, drawn from 152,267 new listings OAV analyzed. Ranked by how far each advertised price falls below the low end of OAV's supported comparable range. This report is a fixed snapshot — it does not change after publication.

Published October 1, 2026 · market data snapshot 2026-10-01 · methodology new-deals-v7 · snapshot id newdeals-il-20261001-new-deals-v7

Looking for today's live rankings? See the current Best New-Car Deals board for Illinois.

Answer

As of October 2026, the best new-car deal in Illinois was the 2026 Lexus RX 350 at $27,648 in Des Plaines, IL (Autonation), priced ~30% below the low end of OAV's comparable price range (low end: $39,483). It ranked #1 of 24 by how far its advertised price fell below the low end of OAV's comparable price range, among listings meeting OAV's eligibility requirements.

The 24 best new-car deals in Illinois, October 2026

Ranked by how far each advertised price falls below the low end of OAV's supported comparable price range, among listings that meet OAV's eligibility requirements.

#VehicleLocationPriceDiscount
12026 Lexus RX 350Des Plaines, IL$27,648~30% below range low end
22026 Honda Passport TrailSportDes Plaines, IL$29,422~28% below range low end
32026 Toyota Tacoma TRD SportDes Plaines, IL$28,127~24% below range low end
42027 BMW 5 Series 550eDes Plaines, IL$56,171~24% below range low end
52026 Nissan Rogue Rock CreekDes Plaines, IL$22,500~24% below range low end$14,145 below MSRP (OEM $36,645)
62026 Toyota 4Runner TRD Off-Road PremiumDes Plaines, IL$34,169~23% below range low end
72026 Toyota Tacoma SR5Des Plaines, IL$25,623~23% below range low end
82026 Toyota Corolla Cross XLEDes Plaines, IL$24,574~22% below range low end
92026 Toyota Camry XSEDes Plaines, IL$20,744~21% below range low end
102026 RAM 3500 Pickup LaramieQuincy, IL$68,645~20% below range low end$21,200 below MSRP (OEM $89,845)
112026 Toyota 4Runner TRD Sport PremiumChicago, IL$45,440~20% below range low end
122027 RAM 1500 Pickup Big Horn/Lone StarQuincy, IL$46,309~19% below range low end$14,366 below MSRP (OEM $60,675)
132027 Nissan Frontier SVDes Plaines, IL$29,832~18% below range low end$8,908 below MSRP (OEM $38,740)
142026 Toyota Sequoia LimitedDes Plaines, IL$35,318~17% below range low end
152026 Toyota Tundra LimitedDes Plaines, IL$29,256~17% below range low end
162027 Ford F-350 Super Duty XLTWillowbrook, IL$61,068~17% below range low end$2,047 below MSRP (OEM $63,115)
172027 Ford F-350 Super Duty XLTWoodstock, IL$61,648~16% below range low end$87 below MSRP (OEM $61,735)
182026 Honda Pilot Black EditionDes Plaines, IL$43,718~15% below range low end
192026 Lexus TX LuxuryDes Plaines, IL$55,856~14% below range low end
202027 BMW X7 40iDes Plaines, IL$51,940~14% below range low end
212026 Toyota Tundra SR5Des Plaines, IL$25,927~13% below range low end
222027 Honda Odyssey TouringDes Plaines, IL$39,988~13% below range low end
232026 Ford Explorer TremorCarbondale, IL$37,580~13% below range low end$14,170 below MSRP (OEM $51,750)
242026 Mazda CX-90 Premium Sport PackageDes Plaines, IL$43,348~13% below range low end

Most new-car listings do not report an odometer reading, so OAV could not screen them for demo or loaner use — confirm each vehicle has not been used as a demo or loaner before purchase.

How these deals were ranked

New vehicles are ranked by how far their advertised price falls below the low end of OAV's supported comparable price range. Only listings meeting OAV's eligibility requirements qualify. MRP (Market Retail Price), the midpoint of that same range, is shown separately as context and is never the ranking anchor. Where a trusted OEM build-spec MSRP is available, dollars below MSRP are shown as a secondary reference. The eligibility rules for this board:

  • New inventory only (dealer-reported condition = new)
  • Consumer vehicles only — commercial/fleet excluded
  • Model year within the two most recent model years
  • Excludes demo/loaner: over 1,500 miles
  • Excludes likely-inactive listings (over 60 days on lot) for data freshness — days-on-lot never affects the ranking
  • Primary metric: percent below the range low end = (comparable low end − advertised price) ÷ comparable low end; ties broken by dollars below the low end
  • Days-on-lot, demand, and price history are reported separately and never affect rank order
  • MRP (Market Retail Price) is the midpoint of the supported comparable range, shown separately from the ranking metric
  • OEM build-spec MSRP discount shown as a secondary reference when trusted provenance is available
  • Every ranked VIN was validated against live inventory at generation

Verify the underlying evidence artifact: /vehicles/il/new.json

Other monthly reports for Illinois

How OAV Identifies Deals

OAV builds a comparable range for each vehicle from regularly refreshed dealer-advertised listings — same make, model and year range, trim where the data supports it. Where the evidence supports a verdict, a vehicle is rated by how its asking price compares to that range; days-on-lot and sell-through are separate demand signals, never inputs to the Price-to-Market verdict. When OAV evaluates a listing but the evidence does not support a verdict, the listing is Unscored.

  • 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 is a separate demand signal, never an input to the Price-to-Market verdict.
  • Listings priced below the comparable-range floor by at least OAV's minimum-gap margin surface as Great Deal — a great deal compared to similar vehicles currently for sale.
  • Listings priced within the comparable range, or below the floor by less than that margin surface as Fair Price — fairly priced, in line with what comparable vehicles are typically listed for.
  • Listings priced above the comparable range surface as Overpriced — above market, higher than what comparable vehicles are typically listed for.
  • Dealer business information is public on every profile. OAV-claimed dealers route inquiries through OAV.

This helps identify which listings are a great deal relative to comparable vehicles — OAV's Great Deal verdict — and shows the evidence behind every rating.

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

Learn how OAV identifies Demand-Verified Deals™

All Best New-Car Deals reports for Illinois