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

VIN5TDDRKEC6MS037045
TrimXSE
Exterior ColorBlack
DrivetrainFWD
Engine2.5L I4
TransmissionCVT
Fuel TypeUnleaded
Inventory Typeused
Days on Lot17

2021 Toyota Sienna

XSE

Unscored
$35,50099,143 mi

O'Fallon, IL 62269

Is this 2021 Toyota Sienna XSE a good deal?

OAV verdict: Unscored

Why: Listed at $35,500, comparable market range $35,500–$35,500. Days on lot: 17 days (market average 40 days).

Market price position

35,500
35,500
35,500

$35,500 · only listing at this price

$35,500 — single data point
Regional range
$35,500 (0 listings)
vs. market
Exact match — no spread
Comparable vehicles
0
Demand-Verified· Backed by recent sales data

Similar vehicles recently sold in an estimated 1453 days.

Dealer Info

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O'Fallon, IL

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About This 2021 Toyota Sienna

Listing updated: May 27, 2026

Listed by a franchise dealer in O'Fallon, IL · On lot for 17 days · VIN verifiable at NHTSA

This used 2021 Toyota Sienna XSE is listed at $35,500 by a franchise dealer in O'Fallon, IL 62269. It has 99,143 miles on the odometer. The exterior color is Black. It features a FWD drivetrain with a 2.5L I4 engine and CVT transmission.

OAV's AI-powered Price-to-Market analysis rates this vehicle as Unscored due to insufficient comparable data. Based on available similar vehicles in the O'Fallon market, the estimated market range is $35,500 to $35,500.

This vehicle has been on the lot for 17 days.

Analysis powered by OAV's patented inventory standardization technology (U.S. Patent No. 12,236,477).

Market context

This listing is part of OAV's broader O'Fallon, IL minivans market analysis. OAV compares vehicles using local and regional price-to-market ranges, days-on-lot, comparable count, and demand signals where available.

How this deal is rated

OAV compares this 2021 Toyota Sienna against similar vehicles currently available in the local and regional market — same make, model, and year range, filtered for comparable mileage. Based on where this listing falls in that comparable set, it is rated:

Listings show OAV's PTM-derived deal quality and live market context. OAV-claimed dealers manage their listing profile and route buyer inquiries directly. Paid OAV partners surface additional verification signals.

How this listing is verified

This vehicle listing was aggregated from a franchise dealer in O'Fallon, IL, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 5TDDRKEC6MS037045 can be independently verified via the U.S. Department of Transportation's NHTSA VIN decoder, and safety recalls at NHTSA's recall database.

Vehicle attributes (year, make, model, trim, mileage, location) are standardized using OAV's patented methodology (U.S. Patent No. 12,236,477), which normalizes naming conventions and deduplicates cross-listed inventory across the dealership network. Listing data is refreshed daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.

2021 Toyota Sienna Market in IL

Comparable Vehicles

196

Average Price

$36,617

Price Range

$14,995–$81,523

Avg Days on Lot

40

Based on 196 comparable 2019-2023 Toyota Sienna listings in IL, the average asking price is $36,617. This listing at $35,500 is $1,117 below average (3% below market). Comparable prices in IL range from $14,995 to $81,523. Similar vehicles spend an average of 40 days on dealer lots in this market.

Similar Toyota Sienna Listings in IL

8 comparable vehicles within ±2 model years and ±30,000 miles (subject trim: XSE — compare trims below)