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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 24, 2026

6M+

Unique vehicles analyzed

as of October 23, 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

813 listings found

2005 Mercedes-Benz C-Class C240 4Matic

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

2005 Mercedes-Benz C-Class C240 4Matic

Naples, FL

UnscoredInsufficient · 0
$3,500144,000 mi

Naples, FL

2001 Mercedes-Benz C-Class C320

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

2001 Mercedes-Benz C-Class C320

Naples, FL

UnscoredInsufficient · 0
$4,250121,000 mi

Naples, FL

2012 Mercedes-Benz GLK-Class GLK350

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

2012 Mercedes-Benz GLK-Class GLK350

Naples, FL

UnscoredLimited · 9
$4,500208,444 mi

Comparison: 9 similar vehicles

Naples, FL

2003 Mercedes-Benz E-Class E320

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

2003 Mercedes-Benz E-Class E320

Naples, FL

UnscoredInsufficient · 0
$4,599103,035 mi

Naples, FL

2012 Mercedes-Benz M-Class ML350

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

2012 Mercedes-Benz M-Class ML350

Naples, FL

UnscoredLimited · 12
$4,995263,218 mi

Comparison: 12 similar vehicles

Naples, FL

2001 Mercedes-Benz E-Class E320 4Matic

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

2001 Mercedes-Benz E-Class E320 4Matic

Naples, FL

UnscoredInsufficient · 0
$4,99569,677 mi

Naples, FL

2011 Mercedes-Benz C-Class C350 Sport

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

2011 Mercedes-Benz C-Class C350 Sport

Naples, FL

UnscoredInsufficient · 0
$5,990165,000 mi

Naples, FL

2008 Mercedes-Benz GL-Class GL320

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

2008 Mercedes-Benz GL-Class GL320

Naples, FL

UnscoredInsufficient · 0
$5,990164,013 mi

Naples, FL

2005 Mercedes-Benz M-Class ML350

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

2005 Mercedes-Benz M-Class ML350

Naples, FL

UnscoredInsufficient · 0
$7,47732,568 mi

Naples, FL

2017 Mercedes-Benz C-Class C300 Luxury

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

2017 Mercedes-Benz C-Class C300 Luxury

Naples, FL

UnscoredInsufficient · 4
$7,500128,275 mi

Comparison: 4 similar vehicles

Naples, FL

2003 Mercedes-Benz SL-Class SL500

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

2003 Mercedes-Benz SL-Class SL500

Naples, FL

Fair PriceLimited · 16
$7,59997,000 mi

Market: $7,200 – $15,900

Comparison: 16 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 232 days listed (based on current market benchmarks)

Naples, FL

2011 Mercedes-Benz E-Class E350 Sport

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

2011 Mercedes-Benz E-Class E350 Sport

Naples, FL

UnscoredLimited · 8
$7,990115,000 mi

Comparison: 8 similar vehicles

Naples, FL

2007 Mercedes-Benz CLS-Class CLS550

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

2007 Mercedes-Benz CLS-Class CLS550

Naples, FL

UnscoredInsufficient · 0
$7,990103,000 mi

Naples, FL

2014 Mercedes-Benz GLK-Class GLK350

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

2014 Mercedes-Benz GLK-Class GLK350

Naples, FL

UnscoredLimited · 13
$8,500138,000 mi

Comparison: 13 similar vehicles

Naples, FL

2013 Mercedes-Benz C-Class C250 Luxury

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

2013 Mercedes-Benz C-Class C250 Luxury

Naples, FL

UnscoredInsufficient · 0
$9,22350,012 mi

Naples, FL

2003 Mercedes-Benz SL-Class SL500

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

2003 Mercedes-Benz SL-Class SL500

Naples, FL

Fair PriceLimited · 16
$9,49978,514 mi

Market: $7,200 – $15,900

Comparison: 16 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 252 days listed (based on current market benchmarks)

Naples, FL

2014 Mercedes-Benz GL-Class GL450

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

2014 Mercedes-Benz GL-Class GL450

Naples, FL

UnscoredLimited · 15
$9,763132,063 mi

Comparison: 15 similar vehicles

Naples, FL

2003 Mercedes-Benz SL-Class SL500

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

2003 Mercedes-Benz SL-Class SL500

Naples, FL

Fair PriceLimited · 16
$9,76383,637 mi

Market: $7,200 – $15,900

Comparison: 16 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 338 days listed (based on current market benchmarks)

Naples, FL

2014 Mercedes-Benz C-Class C250 Luxury

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

2014 Mercedes-Benz C-Class C250 Luxury

Naples, FL

UnscoredLimited · 7
$9,89082,000 mi

Comparison: 7 similar vehicles

Naples, FL

2015 Mercedes-Benz CLA-Class CLA250

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

2015 Mercedes-Benz CLA-Class CLA250

Naples, FL

Fair PriceModerate · 28
$10,500106,000 mi

Market: $4,895 – $17,900

Comparison: 28 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 252 days listed (based on current market benchmarks)

Naples, FL

2005 Mercedes-Benz SL-Class SL500

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

2005 Mercedes-Benz SL-Class SL500

Naples, FL

UnscoredLimited · 7
$10,50066,541 mi

Comparison: 7 similar vehicles

Naples, FL

2016 Mercedes-Benz GLC GLC300

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

2016 Mercedes-Benz GLC GLC300

Naples, FL

UnscoredLimited · 5
$10,750105,000 mi

Comparison: 5 similar vehicles

Naples, FL

2012 Mercedes-Benz M-Class ML350

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

2012 Mercedes-Benz M-Class ML350

Naples, FL

Fair PriceLimited · 12
$10,90097,000 mi

Market: $4,995 – $12,999

Comparison: 12 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 252 days listed (based on current market benchmarks)

Naples, FL

2015 Mercedes-Benz M-Class ML350

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

2015 Mercedes-Benz M-Class ML350

Naples, FL

UnscoredInsufficient · 3
$12,50093,000 mi

Comparison: 3 similar vehicles

Naples, FL

2009 Mercedes-Benz CLK-Class CLK550

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

2009 Mercedes-Benz CLK-Class CLK550

Naples, FL

UnscoredInsufficient · 0
$12,77176,552 mi

Naples, FL

2014 Mercedes-Benz E-Class E350 Sport

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

2014 Mercedes-Benz E-Class E350 Sport

Naples, FL

UnscoredInsufficient · 3
$12,90097,000 mi

Comparison: 3 similar vehicles

Naples, FL

2014 Mercedes-Benz M-Class ML350

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

2014 Mercedes-Benz M-Class ML350

Naples, FL

Fair PriceModerate · 25
$13,90075,000 mi

Market: $8,500 – $17,490

Comparison: 25 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 41 days listed (based on current market benchmarks)

Naples, FL

2013 Mercedes-Benz E-Class E350

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

2013 Mercedes-Benz E-Class E350

Naples, FL

UnscoredLimited · 7
$13,90082,956 mi

Comparison: 7 similar vehicles

Naples, FL

2007 Mercedes-Benz CLK-Class CLK350

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

2007 Mercedes-Benz CLK-Class CLK350

Naples, FL

UnscoredInsufficient · 0
$13,90050,327 mi

Naples, FL

2015 Mercedes-Benz GL-Class GL550

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

2015 Mercedes-Benz GL-Class GL550

Naples, FL

UnscoredInsufficient · 4
$14,722122,080 mi

Comparison: 4 similar vehicles

Naples, FL

2016 Mercedes-Benz GLE-Class GLE400

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

2016 Mercedes-Benz GLE-Class GLE400

Naples, FL

UnscoredInsufficient · 0
$14,90079,000 mi

Naples, FL

2014 Mercedes-Benz E-Class E350

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

2014 Mercedes-Benz E-Class E350

Naples, FL

UnscoredInsufficient · 3
$14,90095,000 mi

Comparison: 3 similar vehicles

Naples, FL

2012 Mercedes-Benz E-Class E350

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

2012 Mercedes-Benz E-Class E350

Naples, FL

UnscoredInsufficient · 0
$14,97733,581 mi

Naples, FL

2016 Mercedes-Benz GL-Class GL450

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

2016 Mercedes-Benz GL-Class GL450

Naples, FL

Fair PriceLimited · 10
$14,99089,644 mi

Market: $8,800 – $17,900

Comparison: 10 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 253 days listed (based on current market benchmarks)

Naples, FL

2018 Mercedes-Benz GLA-Class GLA250

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

2018 Mercedes-Benz GLA-Class GLA250

Naples, FL

UnscoredInsufficient · 0
$15,82451,157 mi

Naples, FL

2013 Mercedes-Benz CLS-Class CLS550

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

2013 Mercedes-Benz CLS-Class CLS550

Naples, FL

UnscoredInsufficient · 3
$15,90066,000 mi

Comparison: 3 similar vehicles

Naples, FL

2001 Mercedes-Benz CLK CLK430

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

2001 Mercedes-Benz CLK CLK430

Naples, FL

UnscoredInsufficient · 0
$15,90050,379 mi

Naples, FL

2014 Mercedes-Benz E-Class E350

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

2014 Mercedes-Benz E-Class E350

Naples, FL

UnscoredInsufficient · 3
$15,99085,867 mi

Comparison: 3 similar vehicles

Naples, FL

2011 Mercedes-Benz S-Class S550

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

2011 Mercedes-Benz S-Class S550

Naples, FL

UnscoredLimited · 7
$15,99069,345 mi

Comparison: 7 similar vehicles

Naples, FL

2018 Mercedes-Benz GLE-Class GLE350

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

2018 Mercedes-Benz GLE-Class GLE350

Naples, FL

Fair PriceRobust · 64
$16,900101,000 mi

Market: $10,450 – $25,995

Comparison: 64 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 236 days listed (based on current market benchmarks)

Naples, FL

2003 Mercedes-Benz SL-Class SL500

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

2003 Mercedes-Benz SL-Class SL500

Naples, FL

UnscoredInsufficient · 0
$16,97743,395 mi

Naples, FL

2019 Mercedes-Benz GLC GLC300

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

2019 Mercedes-Benz GLC GLC300

Naples, FL

Fair PriceModerate · 33
$18,06958,920 mi

Market: $17,994 – $24,398

Comparison: 33 similar vehicles

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

Naples, FL

2019 Mercedes-Benz C-Class Sedan C300

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

2019 Mercedes-Benz C-Class Sedan C300

Naples, FL

UnscoredInsufficient · 3
$18,18980,594 mi

Comparison: 3 similar vehicles

Naples, FL

2018 Mercedes-Benz SLC Roadster SLC300

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

2018 Mercedes-Benz SLC Roadster SLC300

Naples, FL

UnscoredInsufficient · 0
$18,90011,818 mi

Naples, FL

2020 Mercedes-Benz GLC GLC300

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

2020 Mercedes-Benz GLC GLC300

Naples, FL

Fair PriceRobust · 156
$20,90066,710 mi

Market: $15,990 – $24,953

Comparison: 156 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 150 days listed (based on current market benchmarks)

Naples, FL

2020 Mercedes-Benz GLC GLC300

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

2020 Mercedes-Benz GLC GLC300

Naples, FL

Fair PriceRobust · 156
$21,14262,544 mi

Market: $15,990 – $24,953

Comparison: 156 similar vehicles

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

Naples, FL

2018 Mercedes-Benz E-Class E300

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

2018 Mercedes-Benz E-Class E300

Naples, FL

Fair PriceModerate · 34
$21,54830,149 mi

Market: $20,999 – $22,898

Comparison: 34 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 9 days listed (based on current market benchmarks)

Naples, FL

2013 Mercedes-Benz SL-Class SL550

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

2013 Mercedes-Benz SL-Class SL550

Naples, FL

Fair PriceLimited · 12
$21,76393,263 mi

Market: $18,086 – $29,900

Comparison: 12 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 338 days listed (based on current market benchmarks)

Naples, FL

2000 Mercedes-Benz E-Class E320 4matic Wagon

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

2000 Mercedes-Benz E-Class E320 4matic Wagon

Naples, FL

UnscoredInsufficient · 0
$21,97746,612 mi

Naples, FL

2021 Mercedes-Benz GLC GLC300

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

2021 Mercedes-Benz GLC GLC300

Naples, FL

UnscoredInsufficient · 3
$22,99860,383 mi

Comparison: 3 similar vehicles

Naples, FL

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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