Monthly Report · September 2026
Best New-Car Deals in Illinois — September 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 September 2026, drawn from 144,242 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 September 14, 2026 · market data snapshot 2026-09-13 · methodology new-deals-v7 · snapshot id newdeals-il-20260913-new-deals-v7
Looking for today's live rankings? See the current Best New-Car Deals board for Illinois.
Answer
As of September 2026, the best new-car deal in Illinois was the 2026 Chevrolet Tahoe LS at $42,265 in Des Plaines, IL (Autonation), priced ~25% below the low end of OAV's comparable price range (low end: $56,485). 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, September 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.
| # | Vehicle | Location | Price | Discount |
|---|---|---|---|---|
| 1 | 2026 Chevrolet Tahoe LS | Des Plaines, IL | $42,265 | ~25% below range low end |
| 2 | 2026 Subaru Ascent Limited | Des Plaines, IL | $33,512 | ~25% below range low end$16,730 below MSRP (OEM $50,242) |
| 3 | 2026 Mercedes-Benz E-Class E450 | Des Plaines, IL | $50,694 | ~24% below range low end |
| 4 | 2026 Subaru WRX tS | Des Plaines, IL | $32,987 | ~23% below range low end$14,109 below MSRP (OEM $47,096) |
| 5 | 2026 Porsche Macan S | Des Plaines, IL | $64,533 | ~23% below range low end |
| 6 | 2027 Hyundai Palisade SEL | Des Plaines, IL | $35,080 | ~22% below range low end$12,105 below MSRP (OEM $47,185) |
| 7 | 2026 Volkswagen Tiguan SE | Gurnee, IL | $25,758 | ~21% below range low end |
| 8 | 2026 Toyota Tundra SR5 | Des Plaines, IL | $32,942 | ~20% below range low end |
| 9 | 2026 Toyota Sienna Limited | Des Plaines, IL | $43,065 | ~19% below range low end |
| 10 | 2026 Honda Civic Sport | Des Plaines, IL | $20,063 | ~19% below range low end |
| 11 | 2026 Toyota Sienna Woodland Edition | Des Plaines, IL | $44,080 | ~18% below range low end |
| 12 | 2027 Mercedes-Benz GLC Base | Des Plaines, IL | $28,052 | ~17% below range low end |
| 13 | 2026 Ford F-150 Lariat | Des Plaines, IL | $44,145 | ~17% below range low end$32,865 below MSRP (OEM $77,010) |
| 14 | 2026 BMW X5 40i | Des Plaines, IL | $43,313 | ~17% below range low end |
| 15 | 2026 Subaru Forester Premium | Des Plaines, IL | $26,037 | ~16% below range low end$10,236 below MSRP (OEM $36,273) |
| 16 | 2026 Hyundai Tucson Limited | Des Plaines, IL | $32,639 | ~16% below range low end$9,971 below MSRP (OEM $42,610) |
| 17 | 2027 Ford F-350 Super Duty XLT | Woodstock, IL | $61,648 | ~16% below range low end$27 below MSRP (OEM $61,675) |
| 18 | 2026 Ford Mustang GT Premium | Antioch, IL | $57,239 | ~16% below range low end$3,826 below MSRP (OEM $61,065) |
| 19 | 2026 Audi RS 3 Base | Des Plaines, IL | $56,107 | ~15% below range low end |
| 20 | 2026 Toyota Tacoma TRD Sport | Des Plaines, IL | $32,200 | ~14% below range low end |
| 21 | 2026 Toyota Tundra Limited | Des Plaines, IL | $27,974 | ~14% below range low end |
| 22 | 2026 Land Rover Range Rover Evoque S | Des Plaines, IL | $43,824 | ~14% below range low end |
| 23 | 2026 RAM 3500 Pickup Laramie | Quincy, IL | $68,645 | ~14% below range low end$21,100 below MSRP (OEM $89,745) |
| 24 | 2026 GMC Sierra 1500 Denali | Des Plaines, IL | $63,010 | ~14% 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).