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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

298 listings found

No Photo

2005 Toyota Sienna XLE

Manchester, IA

UnscoredInsufficient · 0
$2,350315,820 mi

Manchester, IA

2007 Toyota Sienna LE

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

2007 Toyota Sienna LE

Des Moines, IA

UnscoredInsufficient · 0
$2,500223,178 mi

Des Moines, IA

2006 Toyota Sienna XLE Limited

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

2006 Toyota Sienna XLE Limited

Des Moines, IA

UnscoredInsufficient · 0
$2,950250,000 mi

Des Moines, IA

1998 Toyota Sienna LE

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

1998 Toyota Sienna LE

Sioux City, IA

UnscoredInsufficient · 0
$2,950225,465 mi

Sioux City, IA

2009 Toyota Sienna LE

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

2009 Toyota Sienna LE

Des Moines, IA

UnscoredInsufficient · 0
$2,999253,909 mi

Des Moines, IA

2006 Toyota Sienna LE

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

2006 Toyota Sienna LE

Sioux City, IA

UnscoredInsufficient · 0
$3,950223,123 mi

Sioux City, IA

2008 Toyota Sienna LE

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

2008 Toyota Sienna LE

Marion, IA

UnscoredInsufficient · 4
$4,995216,171 mi

Comparison: 4 similar vehicles

Marion, IA

2011 Toyota Sienna XLE

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

2011 Toyota Sienna XLE

Davenport, IA

UnscoredLimited · 11
$6,694249,310 mi

Comparison: 11 similar vehicles

Davenport, IA

2007 Toyota Sienna XLE

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

2007 Toyota Sienna XLE

Cedar Rapids, IA

UnscoredInsufficient · 3
$6,995167,190 mi

Comparison: 3 similar vehicles

Cedar Rapids, IA

2006 Toyota Sienna XLE Limited

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

2006 Toyota Sienna XLE Limited

Waterloo, IA

UnscoredInsufficient · 0
$6,995156,646 mi

Waterloo, IA

2011 Toyota Sienna SE

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

2011 Toyota Sienna SE

Cedar Falls, IA

UnscoredInsufficient · 3
$7,305203,404 mi

Comparison: 3 similar vehicles

Cedar Falls, IA

2013 Toyota Sienna LE

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

2013 Toyota Sienna LE

Des Moines, IA

UnscoredLimited · 6
$7,500257,826 mi

Comparison: 6 similar vehicles

Des Moines, IA

2011 Toyota Sienna SE

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

2011 Toyota Sienna SE

Des Moines, IA

UnscoredInsufficient · 3
$7,500241,298 mi

Comparison: 3 similar vehicles

Des Moines, IA

2014 Toyota Sienna Limited

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

2014 Toyota Sienna Limited

Sioux City, IA

UnscoredInsufficient · 0
$7,950229,959 mi

Sioux City, IA

2013 Toyota Sienna Limited

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

2013 Toyota Sienna Limited

Sioux City, IA

UnscoredLimited · 5
$7,950209,590 mi

Comparison: 5 similar vehicles

Sioux City, IA

2014 Toyota Sienna LE

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

2014 Toyota Sienna LE

Cedar Falls, IA

UnscoredLimited · 15
$9,068172,867 mi

Comparison: 15 similar vehicles

Cedar Falls, IA

2013 Toyota Sienna XLE

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

2013 Toyota Sienna XLE

Altoona, IA

UnscoredInsufficient · 4
$9,171194,280 mi

Comparison: 4 similar vehicles

Altoona, IA

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

Fort Dodge, IA

UnscoredLimited · 8
$9,532305,542 mi

Comparison: 8 similar vehicles

Fort Dodge, IA

2012 Toyota Sienna LE

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

2012 Toyota Sienna LE

Bettendorf, IA

UnscoredModerate · 32
$9,890237,585 mi

Comparison: 32 similar vehicles

Bettendorf, IA

2017 Toyota Sienna LE

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

2017 Toyota Sienna LE

Sioux City, IA

UnscoredLimited · 6
$9,999194,373 mi

Comparison: 6 similar vehicles

Sioux City, IA

2015 Toyota Sienna XLE

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

2015 Toyota Sienna XLE

Marion, IA

UnscoredModerate · 46
$10,495207,347 mi

Comparison: 46 similar vehicles

Marion, IA

2012 Toyota Sienna Limited

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

2012 Toyota Sienna Limited

Ames, IA

UnscoredInsufficient · 0
$10,775151,375 mi

Ames, IA

2015 Toyota Sienna XLE

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

2015 Toyota Sienna XLE

Cedar Falls, IA

UnscoredModerate · 33
$11,039193,386 mi

Comparison: 33 similar vehicles

Cedar Falls, IA

2013 Toyota Sienna LE

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

2013 Toyota Sienna LE

Marion, IA

UnscoredModerate · 21
$11,498153,573 mi

Comparison: 21 similar vehicles

Marion, IA

2014 Toyota Sienna LE

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

2014 Toyota Sienna LE

Atlantic, IA

UnscoredInsufficient · 3
$11,650155,070 mi

Comparison: 3 similar vehicles

Atlantic, IA

2012 Toyota Sienna XLE

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

2012 Toyota Sienna XLE

Clinton, IA

UnscoredModerate · 20
$12,990127,399 mi

Comparison: 20 similar vehicles

Clinton, IA

2015 Toyota Sienna XLE

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

2015 Toyota Sienna XLE

Mason City, IA

UnscoredModerate · 36
$13,841154,817 mi

Comparison: 36 similar vehicles

Mason City, IA

2016 Toyota Sienna XLE

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

2016 Toyota Sienna XLE

Des Moines, IA

UnscoredInsufficient · 4
$13,995160,949 mi

Comparison: 4 similar vehicles

Des Moines, IA

2014 Toyota Sienna Limited

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

2014 Toyota Sienna Limited

Iowa City, IA

UnscoredInsufficient · 0
$14,684121,811 mi

Iowa City, IA

2017 Toyota Sienna XLE

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

2017 Toyota Sienna XLE

Des Moines, IA

UnscoredInsufficient · 4
$14,950175,491 mi

Comparison: 4 similar vehicles

Des Moines, IA

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

Marion, IA

UnscoredModerate · 24
$14,998157,876 mi

Comparison: 24 similar vehicles

Marion, IA

2014 Toyota Sienna XLE

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

2014 Toyota Sienna XLE

Marion, IA

UnscoredLimited · 18
$14,998133,496 mi

Comparison: 18 similar vehicles

Marion, IA

2017 Toyota Sienna XLE

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

2017 Toyota Sienna XLE

Des Moines, IA

UnscoredInsufficient · 4
$15,999154,684 mi

Comparison: 4 similar vehicles

Des Moines, IA

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

Davenport, IA

UnscoredInsufficient · 3
$16,175128,565 mi

Comparison: 3 similar vehicles

Davenport, IA

2014 Toyota Sienna XLE

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

2014 Toyota Sienna XLE

Sioux City, IA

UnscoredInsufficient · 4
$16,700110,539 mi

Comparison: 4 similar vehicles

Sioux City, IA

2015 Toyota Sienna XLE

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

2015 Toyota Sienna XLE

Des Moines, IA

UnscoredLimited · 13
$16,725152,701 mi

Comparison: 13 similar vehicles

Des Moines, IA

2017 Toyota Sienna LE

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

2017 Toyota Sienna LE

Cedar Falls, IA

UnscoredModerate · 24
$16,970127,428 mi

Comparison: 24 similar vehicles

Cedar Falls, IA

2016 Toyota Sienna LE

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

2016 Toyota Sienna LE

Cedar Rapids, IA

UnscoredInsufficient · 3
$16,995112,505 mi

Comparison: 3 similar vehicles

Cedar Rapids, IA

2019 Toyota Sienna XLE

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

2019 Toyota Sienna XLE

Cedar Falls, IA

UnscoredLimited · 10
$17,285160,550 mi

Comparison: 10 similar vehicles

Cedar Falls, IA

2017 Toyota Sienna XLE Premium

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

2017 Toyota Sienna XLE Premium

West Burlington, IA

UnscoredModerate · 20
$17,818142,434 mi

Comparison: 20 similar vehicles

West Burlington, IA

2019 Toyota Sienna XLE

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

2019 Toyota Sienna XLE

Le Mars, IA

UnscoredInsufficient · 4
$17,900142,729 mi

Comparison: 4 similar vehicles

Le Mars, IA

2020 Toyota Sienna XLE Premium

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

2020 Toyota Sienna XLE Premium

Fort Dodge, IA

UnscoredInsufficient · 0
$17,934191,287 mi

Fort Dodge, IA

2015 Toyota Sienna XLE

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

2015 Toyota Sienna XLE

Newton, IA

UnscoredLimited · 12
$18,128121,699 mi

Comparison: 12 similar vehicles

Newton, IA

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

Cedar Rapids, IA

Fair PriceModerate · 24
$18,995113,499 mi

Market: $10,150 – $20,900

Comparison: 24 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 26 days listed (based on current market benchmarks)

Cedar Rapids, IA

2017 Toyota Sienna Limited

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

2017 Toyota Sienna Limited

Independence, IA

UnscoredLimited · 9
$19,484106,633 mi

Comparison: 9 similar vehicles

Independence, IA

2012 Toyota Sienna LE

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

2012 Toyota Sienna LE

Dubuque, IA

Fair PriceLimited · 19
$19,80087,558 mi

Market: $4,795 – $23,795

Comparison: 19 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 22 days listed (based on current market benchmarks)

Dubuque, IA

2019 Toyota Sienna XLE

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

2019 Toyota Sienna XLE

Sioux City, IA

UnscoredInsufficient · 3
$19,900119,081 mi

Comparison: 3 similar vehicles

Sioux City, IA

2021 Toyota Sienna XLE

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

2021 Toyota Sienna XLE

Cedar Rapids, IA

UnscoredModerate · 29
$19,987197,716 mi

Comparison: 29 similar vehicles

Cedar Rapids, IA

2020 Toyota Sienna XLE Premium

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

2020 Toyota Sienna XLE Premium

Clinton, IA

UnscoredLimited · 18
$19,995177,189 mi

Comparison: 18 similar vehicles

Clinton, IA

2017 Toyota Sienna XLE

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

2017 Toyota Sienna XLE

Grimes, IA

UnscoredInsufficient · 4
$20,179126,822 mi

Comparison: 4 similar vehicles

Grimes, IA

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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