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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

1,850 listings found

No Photo

1999 Mercedes-Benz E-Class Base

Chicago, IL

UnscoredInsufficient · 4
$2,995212,798 mi

Comparison: 4 similar vehicles

Chicago, IL

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

Chicago, IL

UnscoredInsufficient · 3
$4,070131,533 mi

Comparison: 3 similar vehicles

Chicago, IL

2010 Mercedes-Benz C-Class C300 Luxury

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

2010 Mercedes-Benz C-Class C300 Luxury

Naperville, IL

UnscoredLimited · 5
$4,350149,526 mi

Comparison: 5 similar vehicles

Naperville, IL

2008 Mercedes-Benz GL-Class GL550

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

2008 Mercedes-Benz GL-Class GL550

Naperville, IL

UnscoredInsufficient · 0
$4,620174,852 mi

Naperville, IL

2011 Mercedes-Benz M-Class ML350

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

2011 Mercedes-Benz M-Class ML350

Chicago, IL

UnscoredInsufficient · 3
$4,995169,591 mi

Comparison: 3 similar vehicles

Chicago, IL

2008 Mercedes-Benz E-Class E350

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

2008 Mercedes-Benz E-Class E350

Chicago, IL

UnscoredInsufficient · 3
$5,995257,843 mi

Comparison: 3 similar vehicles

Chicago, IL

1996 Mercedes-Benz E-Class

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

1996 Mercedes-Benz E-Class

Naperville, IL

UnscoredInsufficient · 0
$6,49869,289 mi

Naperville, IL

2015 Mercedes-Benz C-Class C350 Sport

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

2015 Mercedes-Benz C-Class C350 Sport

Naperville, IL

UnscoredInsufficient · 0
$6,600165,160 mi

Naperville, IL

2007 Mercedes-Benz C-Class C230 Sport

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

2007 Mercedes-Benz C-Class C230 Sport

Naperville, IL

UnscoredInsufficient · 0
$6,60076,036 mi

Naperville, IL

2008 Mercedes-Benz M-Class ML550

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

2008 Mercedes-Benz M-Class ML550

Chicago, IL

UnscoredInsufficient · 0
$6,995205,344 mi

Chicago, IL

2007 Mercedes-Benz S-Class S550

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

2007 Mercedes-Benz S-Class S550

Naperville, IL

UnscoredInsufficient · 4
$6,998125,169 mi

Comparison: 4 similar vehicles

Naperville, IL

2009 Mercedes-Benz C-Class C300 Luxury

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

2009 Mercedes-Benz C-Class C300 Luxury

Chicago, IL

UnscoredInsufficient · 3
$6,999174,720 mi

Comparison: 3 similar vehicles

Chicago, IL

2009 Mercedes-Benz C-Class C350 Sport

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

2009 Mercedes-Benz C-Class C350 Sport

Naperville, IL

UnscoredInsufficient · 0
$7,239123,898 mi

Naperville, IL

2007 Mercedes-Benz S-Class S550

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

2007 Mercedes-Benz S-Class S550

Naperville, IL

UnscoredInsufficient · 4
$7,498151,740 mi

Comparison: 4 similar vehicles

Naperville, IL

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

Naperville, IL

UnscoredLimited · 13
$7,600126,580 mi

Comparison: 13 similar vehicles

Naperville, IL

2014 Mercedes-Benz E-Class E350 Luxury

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

2014 Mercedes-Benz E-Class E350 Luxury

Naperville, IL

UnscoredLimited · 8
$7,600138,660 mi

Comparison: 8 similar vehicles

Naperville, IL

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

Naperville, IL

UnscoredLimited · 19
$7,900152,545 mi

Comparison: 19 similar vehicles

Naperville, IL

2010 Mercedes-Benz GL-Class GL450

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

2010 Mercedes-Benz GL-Class GL450

Chicago, IL

UnscoredInsufficient · 3
$7,900108,181 mi

Comparison: 3 similar vehicles

Chicago, IL

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

Chicago, IL

UnscoredLimited · 11
$7,995170,935 mi

Comparison: 11 similar vehicles

Chicago, IL

2008 Mercedes-Benz S-Class S550

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

2008 Mercedes-Benz S-Class S550

Cicero, IL

UnscoredLimited · 6
$7,995105,384 mi

Comparison: 6 similar vehicles

Cicero, IL

2004 Mercedes-Benz CLK-Class CLK320

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

2004 Mercedes-Benz CLK-Class CLK320

Chicago, IL

UnscoredInsufficient · 0
$8,219100,681 mi

Chicago, IL

2007 Mercedes-Benz GL-Class GL450

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

2007 Mercedes-Benz GL-Class GL450

Chicago, IL

UnscoredInsufficient · 3
$8,360105,626 mi

Comparison: 3 similar vehicles

Chicago, IL

2014 Mercedes-Benz E-Class E350 Luxury

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

2014 Mercedes-Benz E-Class E350 Luxury

Naperville, IL

UnscoredLimited · 5
$8,498149,488 mi

Comparison: 5 similar vehicles

Naperville, IL

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

Naperville, IL

UnscoredModerate · 24
$8,799162,540 mi

Comparison: 24 similar vehicles

Naperville, IL

2005 Mercedes-Benz SLK-Class SLK350

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

2005 Mercedes-Benz SLK-Class SLK350

Naperville, IL

UnscoredInsufficient · 0
$8,95046,427 mi

Naperville, IL

2015 Mercedes-Benz M-Class ML400

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

2015 Mercedes-Benz M-Class ML400

Chicago, IL

UnscoredInsufficient · 3
$8,974164,397 mi

Comparison: 3 similar vehicles

Chicago, IL

2016 Mercedes-Benz C-Class C300

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

2016 Mercedes-Benz C-Class C300

Cicero, IL

UnscoredModerate · 22
$8,995130,000 mi

Comparison: 22 similar vehicles

Cicero, IL

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

Naperville, IL

UnscoredLimited · 8
$8,998139,125 mi

Comparison: 8 similar vehicles

Naperville, IL

2011 Mercedes-Benz C-Class C300 Sport

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

2011 Mercedes-Benz C-Class C300 Sport

Naperville, IL

UnscoredInsufficient · 4
$8,99898,990 mi

Comparison: 4 similar vehicles

Naperville, IL

2008 Mercedes-Benz S-Class S550

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

2008 Mercedes-Benz S-Class S550

Naperville, IL

UnscoredLimited · 5
$8,99897,755 mi

Comparison: 5 similar vehicles

Naperville, IL

2014 Mercedes-Benz C-Class C350 Sport

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

2014 Mercedes-Benz C-Class C350 Sport

Naperville, IL

UnscoredInsufficient · 0
$9,299137,800 mi

Naperville, IL

2006 Mercedes-Benz SLK-Class SLK280

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

2006 Mercedes-Benz SLK-Class SLK280

Chicago, IL

UnscoredInsufficient · 4
$9,36767,637 mi

Comparison: 4 similar vehicles

Chicago, IL

2011 Mercedes-Benz E-Class E350

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

2011 Mercedes-Benz E-Class E350

Naperville, IL

UnscoredLimited · 9
$9,65090,462 mi

Comparison: 9 similar vehicles

Naperville, IL

2013 Mercedes-Benz M-Class ML350

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

2013 Mercedes-Benz M-Class ML350

Naperville, IL

UnscoredLimited · 14
$9,900126,512 mi

Comparison: 14 similar vehicles

Naperville, IL

2007 Mercedes-Benz S-Class S550

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

2007 Mercedes-Benz S-Class S550

Naperville, IL

UnscoredLimited · 5
$9,95068,014 mi

Comparison: 5 similar vehicles

Naperville, IL

2015 Mercedes-Benz Sprinter Passenger Van Base

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

2015 Mercedes-Benz Sprinter Passenger Van Base

Chicago, IL

UnscoredInsufficient · 0
$9,995218,660 mi

Chicago, IL

2014 Mercedes-Benz CLA-Class CLA250

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

2014 Mercedes-Benz CLA-Class CLA250

Chicago, IL

Fair PriceLimited · 12
$9,995111,410 mi

Market: $6,990 – $16,500

Comparison: 12 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 98 days listed (based on current market benchmarks)

Chicago, IL

2010 Mercedes-Benz S-Class S550

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

2010 Mercedes-Benz S-Class S550

Chicago, IL

UnscoredLimited · 11
$9,995143,474 mi

Comparison: 11 similar vehicles

Chicago, IL

No Photo

2005 Mercedes-Benz SL-Class SL500

Chicago, IL

UnscoredLimited · 9
$9,99578,653 mi

Comparison: 9 similar vehicles

Chicago, IL

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

Naperville, IL

UnscoredLimited · 5
$9,998129,009 mi

Comparison: 5 similar vehicles

Naperville, IL

2013 Mercedes-Benz E-Class E350 Luxury

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

2013 Mercedes-Benz E-Class E350 Luxury

Naperville, IL

UnscoredLimited · 5
$9,99893,752 mi

Comparison: 5 similar vehicles

Naperville, IL

2017 Mercedes-Benz E-Class E300

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

2017 Mercedes-Benz E-Class E300

Naperville, IL

UnscoredModerate · 27
$10,900151,680 mi

Comparison: 27 similar vehicles

Naperville, IL

2010 Mercedes-Benz C-Class C300 Sport

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

2010 Mercedes-Benz C-Class C300 Sport

Chicago, IL

UnscoredInsufficient · 4
$10,99070,773 mi

Comparison: 4 similar vehicles

Chicago, IL

2015 Mercedes-Benz C-Class C300

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

2015 Mercedes-Benz C-Class C300

Naperville, IL

Fair PriceModerate · 35
$10,99573,975 mi

Market: $4,995 – $18,590

Comparison: 35 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 107 days listed (based on current market benchmarks)

Naperville, IL

2014 Mercedes-Benz C-Class C300 Sport

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

2014 Mercedes-Benz C-Class C300 Sport

Aurora, IL

UnscoredLimited · 11
$10,995138,600 mi

Comparison: 11 similar vehicles

Aurora, IL

2013 Mercedes-Benz M-Class ML350

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

2013 Mercedes-Benz M-Class ML350

Aurora, IL

UnscoredLimited · 11
$10,995148,420 mi

Comparison: 11 similar vehicles

Aurora, IL

2006 Mercedes-Benz SL-Class SL500

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

2006 Mercedes-Benz SL-Class SL500

Naperville, IL

UnscoredInsufficient · 3
$11,29986,000 mi

Comparison: 3 similar vehicles

Naperville, IL

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

Chicago, IL

UnscoredLimited · 5
$11,308124,620 mi

Comparison: 5 similar vehicles

Chicago, IL

2015 Mercedes-Benz C-Class C300 Luxury

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

2015 Mercedes-Benz C-Class C300 Luxury

Chicago, IL

UnscoredLimited · 11
$11,367134,618 mi

Comparison: 11 similar vehicles

Chicago, IL

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

Chicago, IL

Fair PriceModerate · 29
$11,49587,489 mi

Market: $7,428 – $14,995

Comparison: 29 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 114 days listed (based on current market benchmarks)

Chicago, IL

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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