Skip to main content
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

82 listings found

2008 Toyota Sienna LE

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

2008 Toyota Sienna LE

Providence, RI

UnscoredInsufficient · 4
$3,900215,000 mi

Comparison: 4 similar vehicles

Providence, RI

2008 Toyota Sienna LE

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

2008 Toyota Sienna LE

Cumberland, RI

UnscoredInsufficient · 4
$6,495187,400 mi

Comparison: 4 similar vehicles

Cumberland, RI

2009 Toyota Sienna XLE

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

2009 Toyota Sienna XLE

Cranston, RI

UnscoredInsufficient · 0
$10,500126,091 mi

Cranston, RI

2014 Toyota Sienna XLE

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

2014 Toyota Sienna XLE

Cranston, RI

UnscoredModerate · 32
$11,900186,255 mi

Comparison: 32 similar vehicles

Cranston, RI

2015 Toyota Sienna LE

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

2015 Toyota Sienna LE

Johnston, RI

UnscoredLimited · 5
$14,900104,711 mi

Comparison: 5 similar vehicles

Johnston, RI

2017 Toyota Sienna LE

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

2017 Toyota Sienna LE

Warwick, RI

UnscoredLimited · 8
$14,995141,264 mi

Comparison: 8 similar vehicles

Warwick, RI

2015 Toyota Sienna XLE

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

2015 Toyota Sienna XLE

Johnston, RI

UnscoredLimited · 8
$16,995143,094 mi

Comparison: 8 similar vehicles

Johnston, RI

2018 Toyota Sienna LE

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

2018 Toyota Sienna LE

Cranston, RI

UnscoredLimited · 14
$19,995125,052 mi

Comparison: 14 similar vehicles

Cranston, RI

2018 Toyota Sienna LE

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

2018 Toyota Sienna LE

North Kingstown, RI

UnscoredInsufficient · 3
$24,66879,589 mi

Comparison: 3 similar vehicles

North Kingstown, RI

2018 Toyota Sienna XLE

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

2018 Toyota Sienna XLE

North Kingstown, RI

Fair PriceModerate · 29
$25,50990,306 mi

Market: $17,990 – $30,990

Comparison: 29 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 8 days listed (based on current market benchmarks)

North Kingstown, RI

2021 Toyota Sienna XLE

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

2021 Toyota Sienna XLE

North Kingstown, RI

UnscoredInsufficient · 3
$31,947113,246 mi

Comparison: 3 similar vehicles

North Kingstown, RI

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

North Kingstown, RI

UnscoredInsufficient · 0
$34,82445,937 mi

North Kingstown, RI

2021 Toyota Sienna XLE

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

2021 Toyota Sienna XLE

East Providence, RI

OverpricedLimited · 15
$36,68775,466 mi

Market: $27,086 – $36,495

Comparison: 15 similar vehicles

Priced ~1% above the typical market range for similar vehicles (based on current market benchmarks)

East Providence, RI

2023 Toyota Sienna Limited

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

2023 Toyota Sienna Limited

Smithfield, RI

UnscoredInsufficient · 0
$37,142104,481 mi

Smithfield, RI

2025 Toyota Sienna LE

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

2025 Toyota Sienna LE

North Kingstown, RI

Fair PriceModerate · 22
$39,38720,272 mi

Market: $39,400 – $44,972

Comparison: 22 similar vehicles

Fairly priced — priced near the comparable range, but not far enough below it to qualify as a Great Deal · 22 days listed (based on current market benchmarks)

North Kingstown, RI

2025 Toyota Sienna LE

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

2025 Toyota Sienna LE

North Kingstown, RI

Fair PriceModerate · 37
$40,91636,185 mi

Market: $38,593 – $57,997

Comparison: 37 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 47 days listed (based on current market benchmarks)

North Kingstown, RI

2021 Toyota Sienna XSE

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

2021 Toyota Sienna XSE

Pawtucket, RI

UnscoredInsufficient · 0
$41,54753,097 mi

Pawtucket, RI

2026 Toyota Sienna LE

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

2026 Toyota Sienna LE

Middletown, RI

UnscoredLimited · 6
$43,023Mileage not verified

Comparison: 6 similar vehicles

Middletown, RI

2024 Toyota Sienna XLE

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

2024 Toyota Sienna XLE

Middletown, RI

Fair PriceRobust · 79
$43,10852,532 mi

Market: $39,709 – $48,990

Comparison: 79 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 36 days listed (based on current market benchmarks)

Middletown, RI

2026 Toyota Sienna LE

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

2026 Toyota Sienna LE

Smithfield, RI

Fair PriceModerate · 31
$44,110Mileage not verified

Market: $43,986 – $89,065

Comparison: 31 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 18 days listed (based on current market benchmarks)

Smithfield, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

North Kingstown, RI

UnscoredInsufficient · 0
$45,38731,395 mi

North Kingstown, RI

2026 Toyota Sienna LE

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

2026 Toyota Sienna LE

East Providence, RI

UnscoredInsufficient · 0
$45,39719,529 mi

East Providence, RI

2026 Toyota Sienna LE

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

2026 Toyota Sienna LE

North Kingstown, RI

Fair PriceLimited · 12
$45,735Mileage not verified

Market: $44,110 – $89,065

Comparison: 12 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 11 days listed (based on current market benchmarks)

North Kingstown, RI

2023 Toyota Sienna XLE

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

2023 Toyota Sienna XLE

East Providence, RI

Fair PriceLimited · 12
$46,28722,529 mi

Market: $44,158 – $82,990

Comparison: 12 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 25 days listed (based on current market benchmarks)

East Providence, RI

2026 Toyota Sienna LE

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

2026 Toyota Sienna LE

Westerly, RI

Fair PriceRobust · 253
$46,305Mileage not verified

Market: $42,609 – $51,695

Comparison: 253 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 12 days listed (based on current market benchmarks)

Westerly, RI

2025 Toyota Sienna XLE

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

2025 Toyota Sienna XLE

Smithfield, RI

Fair PriceLimited · 14
$46,33012,741 mi

Market: $42,699 – $48,058

Comparison: 14 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 36 days listed (based on current market benchmarks)

Smithfield, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

North Kingstown, RI

Fair PriceRobust · 81
$46,38712,784 mi

Market: $44,996 – $52,180

Comparison: 81 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 32 days listed (based on current market benchmarks)

North Kingstown, RI

2026 Toyota Sienna LE

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

2026 Toyota Sienna LE

East Providence, RI

Fair PriceModerate · 30
$46,395Mileage not verified

Market: $43,986 – $89,065

Comparison: 30 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 6 days listed (based on current market benchmarks)

East Providence, RI

2026 Toyota Sienna LE

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

2026 Toyota Sienna LE

Smithfield, RI

Fair PriceModerate · 31
$46,975Mileage not verified

Market: $43,986 – $89,065

Comparison: 31 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 18 days listed (based on current market benchmarks)

Smithfield, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

East Providence, RI

Fair PriceModerate · 35
$47,39420,968 mi

Market: $44,669 – $47,694

Comparison: 35 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 33 days listed (based on current market benchmarks)

East Providence, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

North Kingstown, RI

UnscoredInsufficient · 4
$47,9162,274 mi

Comparison: 4 similar vehicles

North Kingstown, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

Middletown, RI

UnscoredLimited · 7
$47,943Mileage not verified

Comparison: 7 similar vehicles

Middletown, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

Middletown, RI

UnscoredLimited · 7
$48,278Mileage not verified

Comparison: 7 similar vehicles

Middletown, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

Middletown, RI

UnscoredLimited · 7
$48,704Mileage not verified

Comparison: 7 similar vehicles

Middletown, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

East Providence, RI

UnscoredLimited · 7
$50,398413 mi

Comparison: 7 similar vehicles

East Providence, RI

2024 Toyota Sienna Platinum

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

2024 Toyota Sienna Platinum

Johnston, RI

UnscoredInsufficient · 0
$50,40840,317 mi

Johnston, RI

2026 Toyota Sienna Woodland Edition

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

2026 Toyota Sienna Woodland Edition

Middletown, RI

UnscoredLimited · 7
$50,642Mileage not verified

Comparison: 7 similar vehicles

Middletown, RI

2026 Toyota Sienna Woodland Edition

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

2026 Toyota Sienna Woodland Edition

Middletown, RI

UnscoredLimited · 7
$50,642Mileage not verified

Comparison: 7 similar vehicles

Middletown, RI

2026 Toyota Sienna XSE

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

2026 Toyota Sienna XSE

Middletown, RI

UnscoredInsufficient · 3
$51,262Mileage not verified

Comparison: 3 similar vehicles

Middletown, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

North Kingstown, RI

Fair PriceModerate · 25
$51,325Mileage not verified

Market: $51,385 – $90,999

Comparison: 25 similar vehicles

Fairly priced — priced near the comparable range, but not far enough below it to qualify as a Great Deal · 19 days listed (based on current market benchmarks)

North Kingstown, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

North Kingstown, RI

Fair PriceModerate · 25
$51,430Mileage not verified

Market: $51,325 – $90,999

Comparison: 25 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 30 days listed (based on current market benchmarks)

North Kingstown, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

Warwick, RI

Fair PriceRobust · 66
$51,520Mileage not verified

Market: $48,478 – $90,999

Comparison: 66 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 2 days listed (based on current market benchmarks)

Warwick, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

North Kingstown, RI

Fair PriceModerate · 25
$51,525Mileage not verified

Market: $51,325 – $90,999

Comparison: 25 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 5 days listed (based on current market benchmarks)

North Kingstown, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

North Kingstown, RI

Fair PriceModerate · 25
$51,535Mileage not verified

Market: $51,325 – $90,999

Comparison: 25 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 35 days listed (based on current market benchmarks)

North Kingstown, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

North Kingstown, RI

Fair PriceModerate · 25
$51,640Mileage not verified

Market: $51,325 – $90,999

Comparison: 25 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 5 days listed (based on current market benchmarks)

North Kingstown, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

Warwick, RI

Fair PriceRobust · 66
$51,735Mileage not verified

Market: $48,478 – $90,999

Comparison: 66 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 2 days listed (based on current market benchmarks)

Warwick, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

Smithfield, RI

Fair PriceRobust · 66
$51,765Mileage not verified

Market: $48,478 – $90,999

Comparison: 66 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 5 days listed (based on current market benchmarks)

Smithfield, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

Smithfield, RI

Fair PriceRobust · 66
$51,820Mileage not verified

Market: $48,478 – $90,999

Comparison: 66 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 28 days listed (based on current market benchmarks)

Smithfield, RI

2026 Toyota Sienna XSE

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

2026 Toyota Sienna XSE

Smithfield, RI

Fair PriceModerate · 30
$51,830Mileage not verified

Market: $51,864 – $56,569

Comparison: 30 similar vehicles

Fairly priced — priced near the comparable range, but not far enough below it to qualify as a Great Deal · 22 days listed (based on current market benchmarks)

Smithfield, RI

2026 Toyota Sienna XLE

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

2026 Toyota Sienna XLE

Smithfield, RI

Fair PriceRobust · 66
$52,030Mileage not verified

Market: $48,478 – $90,999

Comparison: 66 similar vehicles

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

Smithfield, RI

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

Explore Popular Markets

Independent, evidence-backed pricing intelligence for every major US metro

We collect personal information as described in our Notice at Collection and Privacy Policy. You may opt out of the sale or sharing of your personal information.