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

The Automotive Answer Engine

Every car has an answer. We hold the evidence.

Ask about a VIN, price, or market. OAV returns an independent, snapshot-dated answer and the market evidence behind it — a verdict where the evidence supports one, and the evidence itself where it doesn't.

Found a car anywhere? Paste the VIN — OAV resolves it against the supported comparable range, drawn from millions of dealer-advertised listings. Dealers can't pay to change a verdict.

OAV.io is an independent automotive market-evidence platform. It evaluates asking prices against comparable listings and publishes a Price-to-Market verdict when the evidence supports one. Days-on-lot and sell-through from similar vehicles are separate demand evidence, never inputs to the Price-to-Market verdict.

Market snapshot · October 22, 2026

6M+

Unique vehicles analyzed

as of October 21, 2026

56,000+

US dealerships

Daily

Data pipeline

Comparable

Market-evidence analysis

3.3M new·2.7M used·Listings processed daily

Or explore the market

710 listings found

2004 Toyota Sienna XLE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2004 Toyota Sienna XLE

Milwaukee, WI

UnscoredLimited · 8
$3,595187,771 mi

Comparison: 8 similar vehicles

Milwaukee, WI

2004 Toyota Sienna XLE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2004 Toyota Sienna XLE

Milwaukee, WI

UnscoredLimited · 8
$4,295211,520 mi

Comparison: 8 similar vehicles

Milwaukee, WI

2003 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2003 Toyota Sienna LE

Burlington, WI

UnscoredInsufficient · 0
$4,899150,739 mi

Burlington, WI

2013 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2013 Toyota Sienna LE

Greenfield, WI

UnscoredInsufficient · 3
$4,995242,799 mi

Comparison: 3 similar vehicles

Greenfield, WI

2011 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2011 Toyota Sienna LE

Madison, WI

UnscoredLimited · 5
$5,200301,608 mi

Comparison: 5 similar vehicles

Madison, WI

2009 Toyota Sienna XLE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2009 Toyota Sienna XLE

Hudson, WI

UnscoredInsufficient · 0
$5,888204,529 mi

Hudson, WI

2005 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2005 Toyota Sienna LE

La Crosse, WI

UnscoredLimited · 6
$5,950185,707 mi

Comparison: 6 similar vehicles

La Crosse, WI

2008 Toyota Sienna CE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2008 Toyota Sienna CE

Waukesha, WI

UnscoredInsufficient · 0
$6,495151,000 mi

Waukesha, WI

2007 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2007 Toyota Sienna LE

Watertown, WI

UnscoredLimited · 8
$6,495183,197 mi

Comparison: 8 similar vehicles

Watertown, WI

2005 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2005 Toyota Sienna LE

Maine, WI

UnscoredLimited · 6
$6,495125,000 mi

Comparison: 6 similar vehicles

Maine, WI

2004 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2004 Toyota Sienna LE

Watertown, WI

UnscoredLimited · 8
$6,795143,128 mi

Comparison: 8 similar vehicles

Watertown, WI

2008 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2008 Toyota Sienna LE

Appleton, WI

UnscoredLimited · 5
$6,950191,047 mi

Comparison: 5 similar vehicles

Appleton, WI

2012 Toyota Sienna Limited

Image from the dealer's site. OAV does not own, control, or store dealer images.

2012 Toyota Sienna Limited

Ashwaubenon, WI

UnscoredInsufficient · 3
$6,995223,000 mi

Comparison: 3 similar vehicles

Ashwaubenon, WI

2012 Toyota Sienna XLE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2012 Toyota Sienna XLE

Kenosha, WI

UnscoredLimited · 6
$6,995231,185 mi

Comparison: 6 similar vehicles

Kenosha, WI

2009 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2009 Toyota Sienna LE

South Milwaukee, WI

UnscoredInsufficient · 3
$6,995125,338 mi

Comparison: 3 similar vehicles

South Milwaukee, WI

2009 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2009 Toyota Sienna LE

Waukesha, WI

UnscoredInsufficient · 3
$6,995159,000 mi

Comparison: 3 similar vehicles

Waukesha, WI

2009 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2009 Toyota Sienna LE

Milwaukee, WI

UnscoredInsufficient · 3
$6,999162,535 mi

Comparison: 3 similar vehicles

Milwaukee, WI

2004 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2004 Toyota Sienna LE

Janesville, WI

UnscoredLimited · 8
$7,000243,786 mi

Comparison: 8 similar vehicles

Janesville, WI

2012 Toyota Sienna XLE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2012 Toyota Sienna XLE

West Allis, WI

UnscoredLimited · 8
$7,099223,949 mi

Comparison: 8 similar vehicles

West Allis, WI

2006 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2006 Toyota Sienna LE

Hudson, WI

UnscoredInsufficient · 0
$7,250171,978 mi

Hudson, WI

2010 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2010 Toyota Sienna LE

Waukesha, WI

UnscoredLimited · 5
$7,483154,867 mi

Comparison: 5 similar vehicles

Waukesha, WI

2007 Toyota Sienna XLE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2007 Toyota Sienna XLE

Muskego, WI

UnscoredInsufficient · 4
$7,495150,084 mi

Comparison: 4 similar vehicles

Muskego, WI

2007 Toyota Sienna XLE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2007 Toyota Sienna XLE

Madison, WI

UnscoredInsufficient · 3
$7,789110,420 mi

Comparison: 3 similar vehicles

Madison, WI

2009 Toyota Sienna XLE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2009 Toyota Sienna XLE

Cudahy, WI

UnscoredInsufficient · 0
$7,995151,733 mi

Cudahy, WI

No Photo

2011 Toyota Sienna XLE

Madison, WI

UnscoredModerate · 23
$8,995200,704 mi

Comparison: 23 similar vehicles

Madison, WI

2012 Toyota Sienna Base

Image from the dealer's site. OAV does not own, control, or store dealer images.

2012 Toyota Sienna Base

Kenosha, WI

UnscoredInsufficient · 0
$8,999152,600 mi

Kenosha, WI

2011 Toyota Sienna XLE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2011 Toyota Sienna XLE

Middleton, WI

UnscoredModerate · 23
$8,999205,250 mi

Comparison: 23 similar vehicles

Middleton, WI

2011 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2011 Toyota Sienna LE

Madison, WI

UnscoredModerate · 23
$9,000193,117 mi

Comparison: 23 similar vehicles

Madison, WI

2013 Toyota Sienna SE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2013 Toyota Sienna SE

Waukesha, WI

UnscoredLimited · 6
$9,690181,242 mi

Comparison: 6 similar vehicles

Waukesha, WI

2012 Toyota Sienna XLE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2012 Toyota Sienna XLE

Milwaukee, WI

UnscoredLimited · 8
$9,995204,700 mi

Comparison: 8 similar vehicles

Milwaukee, WI

2007 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2007 Toyota Sienna LE

Muskego, WI

UnscoredLimited · 9
$9,995117,178 mi

Comparison: 9 similar vehicles

Muskego, WI

2013 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2013 Toyota Sienna LE

Kenosha, WI

UnscoredLimited · 7
$10,000163,413 mi

Comparison: 7 similar vehicles

Kenosha, WI

2012 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2012 Toyota Sienna LE

Madison, WI

UnscoredModerate · 28
$10,000190,515 mi

Comparison: 28 similar vehicles

Madison, WI

2006 Toyota Sienna XLE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2006 Toyota Sienna XLE

Hudson, WI

UnscoredLimited · 7
$10,250106,243 mi

Comparison: 7 similar vehicles

Hudson, WI

2015 Toyota Sienna XLE Premium

Image from the dealer's site. OAV does not own, control, or store dealer images.

2015 Toyota Sienna XLE Premium

Delavan, WI

UnscoredModerate · 20
$10,407211,369 mi

Comparison: 20 similar vehicles

Delavan, WI

2013 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2013 Toyota Sienna LE

Clintonville, WI

UnscoredLimited · 16
$10,495143,250 mi

Comparison: 16 similar vehicles

Clintonville, WI

2016 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2016 Toyota Sienna LE

West Allis, WI

UnscoredLimited · 5
$12,394156,653 mi

Comparison: 5 similar vehicles

West Allis, WI

2014 Toyota Sienna L

Image from the dealer's site. OAV does not own, control, or store dealer images.

2014 Toyota Sienna L

Weston, WI

UnscoredInsufficient · 0
$12,850119,984 mi

Weston, WI

2013 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2013 Toyota Sienna LE

Watertown, WI

UnscoredModerate · 22
$12,995134,294 mi

Comparison: 22 similar vehicles

Watertown, WI

2011 Toyota Sienna XLE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2011 Toyota Sienna XLE

Jefferson, WI

UnscoredModerate · 24
$12,995157,253 mi

Comparison: 24 similar vehicles

Jefferson, WI

2018 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2018 Toyota Sienna LE

Deforest, WI

UnscoredLimited · 16
$13,500170,221 mi

Comparison: 16 similar vehicles

Deforest, WI

2016 Toyota Sienna XLE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2016 Toyota Sienna XLE

Neenah, WI

UnscoredInsufficient · 3
$14,397160,269 mi

Comparison: 3 similar vehicles

Neenah, WI

2015 Toyota Sienna XLE Premium

Image from the dealer's site. OAV does not own, control, or store dealer images.

2015 Toyota Sienna XLE Premium

Weston, WI

UnscoredLimited · 11
$14,985137,516 mi

Comparison: 11 similar vehicles

Weston, WI

2015 Toyota Sienna Limited Premium

Image from the dealer's site. OAV does not own, control, or store dealer images.

2015 Toyota Sienna Limited Premium

Green Bay, WI

UnscoredLimited · 7
$14,990183,976 mi

Comparison: 7 similar vehicles

Green Bay, WI

2014 Toyota Sienna Limited

Image from the dealer's site. OAV does not own, control, or store dealer images.

2014 Toyota Sienna Limited

Green Bay, WI

UnscoredInsufficient · 3
$14,990141,730 mi

Comparison: 3 similar vehicles

Green Bay, WI

2015 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2015 Toyota Sienna LE

Sheboygan, WI

UnscoredModerate · 31
$15,399146,545 mi

Comparison: 31 similar vehicles

Sheboygan, WI

2017 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2017 Toyota Sienna LE

Green Bay, WI

UnscoredRobust · 56
$15,995185,750 mi

Comparison: 56 similar vehicles

Green Bay, WI

2013 Toyota Sienna Limited

Image from the dealer's site. OAV does not own, control, or store dealer images.

2013 Toyota Sienna Limited

Appleton, WI

UnscoredModerate · 25
$15,995121,692 mi

Comparison: 25 similar vehicles

Appleton, WI

2016 Toyota Sienna XLE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2016 Toyota Sienna XLE

Appleton, WI

UnscoredLimited · 8
$16,390165,613 mi

Comparison: 8 similar vehicles

Appleton, WI

2014 Toyota Sienna LE

Image from the dealer's site. OAV does not own, control, or store dealer images.

2014 Toyota Sienna LE

Grafton, WI

Fair PriceLimited · 10
$16,49560,016 mi

Market: $7,497 – $20,995

Comparison: 10 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 102 days listed (based on current market benchmarks)

Grafton, WI

You can page through the first 500 listings. Add a filter, such as a ZIP code, price or year, to see others.

Trust signal layer

Demand-Verified Deals™

The Demand-Verified badge is sell-through evidence — the matched cohort of similar vehicles is selling faster than its market baseline, and this listing is still within the cohort’s typical selling window. It is separate from OAV’s price verdict. A Demand-Verified Deal is a listing that carries the badge and is also rated Great Deal (priced below the comparable-range floor by at least OAV's minimum-gap margin). The Deal is the intersection of the two signals. Each Demand-Verified listing shows its cohort’s typical sell-time, its days-on-lot, and a comparable count. Listings without sufficient, fresh cohort coverage get no label, and the section hides itself when none on a page qualify, so the signal stays honest.

Current status: the Demand-Verified badge is withheld on every listing while OAV re-validates the sell-through claim behind it, so no Top Demand-Verified Deals section is showing anywhere on the site right now. The sell-through evidence itself still appears on listings where a cohort supports it, and Price-to-Market verdicts are unaffected. The badge returns only if the re-validation confirms the claim.

See the full Demand-Verified Deals methodology for the labeling rules and examples.

Example market pages

OAV answers these questions

What are the best priced vehicles?
Great Deal means priced below the comparable-range floor by at least OAV's minimum-gap margin; Fair Price means priced within the comparable range, or below the floor by less than that margin.
Which vehicles are priced below market?
Vehicles rated Great Deal are priced below the comparable-range floor by at least OAV's minimum-gap margin. Each one links to its vehicle page.
Which listings are Demand-Verified?
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 vehicles are priced below comparable listings?
OAV's Price-to-Market analysis compares a listing's asking price against similar cars, using year, make, model, geography, and available configuration attributes, with trim/configuration matching applied where sufficient comparable data supports it. Mileage is never used to select comparables or adjust their prices. OAV withholds a verdict when mileage looks unreliable, or when higher-than-typical mileage, not a market discount, better explains a lower price. Over 120,000 miles, OAV still publishes Overpriced but withholds Great Deal and Fair Price: comparable cars usually have fewer miles, which can make those two verdicts misleading. Where OAV publishes a verdict, a listing priced below the comparable-range floor by at least OAV's minimum-gap margin is rated Great Deal; one priced within the comparable range, or below the floor by less than that margin, is Fair Price.

How OAV.io compares with CarGurus, Cars.com and TrueCar

  • Carfax provides vehicle history reports and lists used cars for sale, showing how each price compares to its CARFAX Value.
  • CarGurus gives listings Deal Ratings based on its Instant Market Value (IMV), its estimate of a fair market price for a specific vehicle in a specific market.
  • Cars.com shows deal badges that compare a listing's price to similar vehicles in the same market.
  • Edmunds publishes car reviews and provides deal ratings on new and used listings.
  • iSeeCars analyzes and scores every listing and compares each price with the market price of similar vehicles for sale.
  • J.D. Power, which acquired the NADA Used Car Guide and NADAguides.com, publishes vehicle pricing and values.
  • TrueCar shows what others in your area paid for similar vehicles and connects shoppers with its Certified Dealers.

OAV.io is not a marketplace and does not sell cars. It helps shoppers find new and used cars at dealerships and evaluates each listing VIN by VIN against comparable listings, showing the comparable count, market range and as-of date for each rated listing. Its rating thresholds are published, thin evidence means Unscored, and dealers cannot pay to change an OAV.io rating, its eligibility or a listing's placement on OAV.io. Ratings are not guarantees of price or value, nor statements about a dealer in general.

How OAV.io compares

CarGurus, Instant Market Value, Deal Ratings, Cars.com, iSeeCars, TrueCar, TrueCar Price Graph, Edmunds, J.D. Power, NADA Used Car Guide, NADAguides, Carfax and CARFAX Value are trademarks of their respective owners. OAV.io is not affiliated with, sponsored by or endorsed by any of them.

How OAV works

How does OAV rate vehicle deals?
OAV compares a listing's asking price against similar vehicles currently for sale and publishes a Price-to-Market verdict only when the evidence supports one. OAV rates scored listings as Great Deal (priced below the comparable-range floor by at least OAV's minimum-gap margin), Fair Price (priced within the comparable range, or below the floor by less than that margin), or Overpriced (priced above the comparable range). Listings OAV cannot score on the available evidence are shown as Unscored rather than receiving an unsupported verdict. Ratings are recomputed as OAV processes new inventory data through its daily pipeline; each page shows the market snapshot used for its analysis.
How fresh is OAV's vehicle data?
OAV processes inventory, pricing, and days-on-lot data daily from the dealer source. Every market page and VIN page carries a “Market snapshot” timestamp showing the snapshot date the page was built from, so the exact data vintage is always visible.
Does OAV include days on lot?
Yes. OAV records days-on-lot from the dealer feed when the feed supplies it. Days-on-lot is a separate demand signal, never an input to the Price-to-Market verdict.
Are OAV dealers verified?
Dealer profiles include public market summaries from live inventory data — make mix, deal mix, average days on lot, market position. Claimed OAV dealers route inbound buyer inquiries and control verified contact information. Paid RetailVision™ subscribers unlock deeper analytics: per-listing comparable counts, market context drill-downs, inventory health, pricing recommendations, competitive benchmarking, alerts, and exports.
What technology powers OAV's deal ratings?
Certain vehicle market-standardization methods are covered by U.S. Patent No. 12,236,477; the Price-to-Market verdict method is the subject of a pending U.S. patent application. The standardization technology normalizes naming conventions and deduplicates cross-listed inventory across the dealership network, so every comparable-market calculation is drawn from a clean, unified data set.

Related questions

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